Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

10 files changed, 3168 insertions, 0 deletions

diff --git a/drivers/clk/davinci/Makefile b/drivers/clk/davinci/Makefile
new file mode 100644
index 0000000000..5d0ae1ee72
--- /dev/null
+++ b/drivers/clk/davinci/Makefile
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0
+
+ifeq ($(CONFIG_COMMON_CLK), y)
+obj-$(CONFIG_ARCH_DAVINCI_DA8XX)	+= da8xx-cfgchip.o
+
+obj-y += pll.o
+obj-$(CONFIG_ARCH_DAVINCI_DA830)	+= pll-da830.o
+obj-$(CONFIG_ARCH_DAVINCI_DA850)	+= pll-da850.o
+
+obj-y += psc.o
+obj-$(CONFIG_ARCH_DAVINCI_DA830)	+= psc-da830.o
+obj-$(CONFIG_ARCH_DAVINCI_DA850)	+= psc-da850.o
+endif
diff --git a/drivers/clk/davinci/da8xx-cfgchip.c b/drivers/clk/davinci/da8xx-cfgchip.c
new file mode 100644
index 0000000000..e5b2cdfe88
--- /dev/null
+++ b/drivers/clk/davinci/da8xx-cfgchip.c
@@ -0,0 +1,792 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Clock driver for DA8xx/AM17xx/AM18xx/OMAP-L13x CFGCHIP
+ *
+ * Copyright (C) 2018 David Lechner <david@lechnology.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/init.h>
+#include <linux/mfd/da8xx-cfgchip.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_data/clk-da8xx-cfgchip.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+/* --- Gate clocks --- */
+
+#define DA8XX_GATE_CLOCK_IS_DIV4P5	BIT(1)
+
+struct da8xx_cfgchip_gate_clk_info {
+	const char *name;
+	u32 cfgchip;
+	u32 bit;
+	u32 flags;
+};
+
+struct da8xx_cfgchip_gate_clk {
+	struct clk_hw hw;
+	struct regmap *regmap;
+	u32 reg;
+	u32 mask;
+};
+
+#define to_da8xx_cfgchip_gate_clk(_hw) \
+	container_of((_hw), struct da8xx_cfgchip_gate_clk, hw)
+
+static int da8xx_cfgchip_gate_clk_enable(struct clk_hw *hw)
+{
+	struct da8xx_cfgchip_gate_clk *clk = to_da8xx_cfgchip_gate_clk(hw);
+
+	return regmap_write_bits(clk->regmap, clk->reg, clk->mask, clk->mask);
+}
+
+static void da8xx_cfgchip_gate_clk_disable(struct clk_hw *hw)
+{
+	struct da8xx_cfgchip_gate_clk *clk = to_da8xx_cfgchip_gate_clk(hw);
+
+	regmap_write_bits(clk->regmap, clk->reg, clk->mask, 0);
+}
+
+static int da8xx_cfgchip_gate_clk_is_enabled(struct clk_hw *hw)
+{
+	struct da8xx_cfgchip_gate_clk *clk = to_da8xx_cfgchip_gate_clk(hw);
+	unsigned int val;
+
+	regmap_read(clk->regmap, clk->reg, &val);
+
+	return !!(val & clk->mask);
+}
+
+static unsigned long da8xx_cfgchip_div4p5_recalc_rate(struct clk_hw *hw,
+						      unsigned long parent_rate)
+{
+	/* this clock divides by 4.5 */
+	return parent_rate * 2 / 9;
+}
+
+static const struct clk_ops da8xx_cfgchip_gate_clk_ops = {
+	.enable		= da8xx_cfgchip_gate_clk_enable,
+	.disable	= da8xx_cfgchip_gate_clk_disable,
+	.is_enabled	= da8xx_cfgchip_gate_clk_is_enabled,
+};
+
+static const struct clk_ops da8xx_cfgchip_div4p5_clk_ops = {
+	.enable		= da8xx_cfgchip_gate_clk_enable,
+	.disable	= da8xx_cfgchip_gate_clk_disable,
+	.is_enabled	= da8xx_cfgchip_gate_clk_is_enabled,
+	.recalc_rate	= da8xx_cfgchip_div4p5_recalc_rate,
+};
+
+static struct da8xx_cfgchip_gate_clk * __init
+da8xx_cfgchip_gate_clk_register(struct device *dev,
+				const struct da8xx_cfgchip_gate_clk_info *info,
+				struct regmap *regmap)
+{
+	struct clk *parent;
+	const char *parent_name;
+	struct da8xx_cfgchip_gate_clk *gate;
+	struct clk_init_data init;
+	int ret;
+
+	parent = devm_clk_get(dev, NULL);
+	if (IS_ERR(parent))
+		return ERR_CAST(parent);
+
+	parent_name = __clk_get_name(parent);
+
+	gate = devm_kzalloc(dev, sizeof(*gate), GFP_KERNEL);
+	if (!gate)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = info->name;
+	if (info->flags & DA8XX_GATE_CLOCK_IS_DIV4P5)
+		init.ops = &da8xx_cfgchip_div4p5_clk_ops;
+	else
+		init.ops = &da8xx_cfgchip_gate_clk_ops;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+	init.flags = 0;
+
+	gate->hw.init = &init;
+	gate->regmap = regmap;
+	gate->reg = info->cfgchip;
+	gate->mask = info->bit;
+
+	ret = devm_clk_hw_register(dev, &gate->hw);
+	if (ret < 0)
+		return ERR_PTR(ret);
+
+	return gate;
+}
+
+static const struct da8xx_cfgchip_gate_clk_info da8xx_tbclksync_info __initconst = {
+	.name = "ehrpwm_tbclk",
+	.cfgchip = CFGCHIP(1),
+	.bit = CFGCHIP1_TBCLKSYNC,
+};
+
+static int __init da8xx_cfgchip_register_tbclk(struct device *dev,
+					       struct regmap *regmap)
+{
+	struct da8xx_cfgchip_gate_clk *gate;
+
+	gate = da8xx_cfgchip_gate_clk_register(dev, &da8xx_tbclksync_info,
+					       regmap);
+	if (IS_ERR(gate))
+		return PTR_ERR(gate);
+
+	clk_hw_register_clkdev(&gate->hw, "tbclk", "ehrpwm.0");
+	clk_hw_register_clkdev(&gate->hw, "tbclk", "ehrpwm.1");
+
+	return 0;
+}
+
+static const struct da8xx_cfgchip_gate_clk_info da8xx_div4p5ena_info __initconst = {
+	.name = "div4.5",
+	.cfgchip = CFGCHIP(3),
+	.bit = CFGCHIP3_DIV45PENA,
+	.flags = DA8XX_GATE_CLOCK_IS_DIV4P5,
+};
+
+static int __init da8xx_cfgchip_register_div4p5(struct device *dev,
+						struct regmap *regmap)
+{
+	struct da8xx_cfgchip_gate_clk *gate;
+
+	gate = da8xx_cfgchip_gate_clk_register(dev, &da8xx_div4p5ena_info, regmap);
+
+	return PTR_ERR_OR_ZERO(gate);
+}
+
+static int __init
+of_da8xx_cfgchip_gate_clk_init(struct device *dev,
+			       const struct da8xx_cfgchip_gate_clk_info *info,
+			       struct regmap *regmap)
+{
+	struct da8xx_cfgchip_gate_clk *gate;
+
+	gate = da8xx_cfgchip_gate_clk_register(dev, info, regmap);
+	if (IS_ERR(gate))
+		return PTR_ERR(gate);
+
+	return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, gate);
+}
+
+static int __init of_da8xx_tbclksync_init(struct device *dev,
+					  struct regmap *regmap)
+{
+	return of_da8xx_cfgchip_gate_clk_init(dev, &da8xx_tbclksync_info, regmap);
+}
+
+static int __init of_da8xx_div4p5ena_init(struct device *dev,
+					  struct regmap *regmap)
+{
+	return of_da8xx_cfgchip_gate_clk_init(dev, &da8xx_div4p5ena_info, regmap);
+}
+
+/* --- MUX clocks --- */
+
+struct da8xx_cfgchip_mux_clk_info {
+	const char *name;
+	const char *parent0;
+	const char *parent1;
+	u32 cfgchip;
+	u32 bit;
+};
+
+struct da8xx_cfgchip_mux_clk {
+	struct clk_hw hw;
+	struct regmap *regmap;
+	u32 reg;
+	u32 mask;
+};
+
+#define to_da8xx_cfgchip_mux_clk(_hw) \
+	container_of((_hw), struct da8xx_cfgchip_mux_clk, hw)
+
+static int da8xx_cfgchip_mux_clk_set_parent(struct clk_hw *hw, u8 index)
+{
+	struct da8xx_cfgchip_mux_clk *clk = to_da8xx_cfgchip_mux_clk(hw);
+	unsigned int val = index ? clk->mask : 0;
+
+	return regmap_write_bits(clk->regmap, clk->reg, clk->mask, val);
+}
+
+static u8 da8xx_cfgchip_mux_clk_get_parent(struct clk_hw *hw)
+{
+	struct da8xx_cfgchip_mux_clk *clk = to_da8xx_cfgchip_mux_clk(hw);
+	unsigned int val;
+
+	regmap_read(clk->regmap, clk->reg, &val);
+
+	return (val & clk->mask) ? 1 : 0;
+}
+
+static const struct clk_ops da8xx_cfgchip_mux_clk_ops = {
+	.determine_rate	= clk_hw_determine_rate_no_reparent,
+	.set_parent	= da8xx_cfgchip_mux_clk_set_parent,
+	.get_parent	= da8xx_cfgchip_mux_clk_get_parent,
+};
+
+static struct da8xx_cfgchip_mux_clk * __init
+da8xx_cfgchip_mux_clk_register(struct device *dev,
+			       const struct da8xx_cfgchip_mux_clk_info *info,
+			       struct regmap *regmap)
+{
+	const char * const parent_names[] = { info->parent0, info->parent1 };
+	struct da8xx_cfgchip_mux_clk *mux;
+	struct clk_init_data init;
+	int ret;
+
+	mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
+	if (!mux)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = info->name;
+	init.ops = &da8xx_cfgchip_mux_clk_ops;
+	init.parent_names = parent_names;
+	init.num_parents = 2;
+	init.flags = 0;
+
+	mux->hw.init = &init;
+	mux->regmap = regmap;
+	mux->reg = info->cfgchip;
+	mux->mask = info->bit;
+
+	ret = devm_clk_hw_register(dev, &mux->hw);
+	if (ret < 0)
+		return ERR_PTR(ret);
+
+	return mux;
+}
+
+static const struct da8xx_cfgchip_mux_clk_info da850_async1_info __initconst = {
+	.name = "async1",
+	.parent0 = "pll0_sysclk3",
+	.parent1 = "div4.5",
+	.cfgchip = CFGCHIP(3),
+	.bit = CFGCHIP3_EMA_CLKSRC,
+};
+
+static int __init da8xx_cfgchip_register_async1(struct device *dev,
+						struct regmap *regmap)
+{
+	struct da8xx_cfgchip_mux_clk *mux;
+
+	mux = da8xx_cfgchip_mux_clk_register(dev, &da850_async1_info, regmap);
+	if (IS_ERR(mux))
+		return PTR_ERR(mux);
+
+	clk_hw_register_clkdev(&mux->hw, "async1", "da850-psc0");
+
+	return 0;
+}
+
+static const struct da8xx_cfgchip_mux_clk_info da850_async3_info __initconst = {
+	.name = "async3",
+	.parent0 = "pll0_sysclk2",
+	.parent1 = "pll1_sysclk2",
+	.cfgchip = CFGCHIP(3),
+	.bit = CFGCHIP3_ASYNC3_CLKSRC,
+};
+
+static int __init da850_cfgchip_register_async3(struct device *dev,
+						struct regmap *regmap)
+{
+	struct da8xx_cfgchip_mux_clk *mux;
+	struct clk_hw *parent;
+
+	mux = da8xx_cfgchip_mux_clk_register(dev, &da850_async3_info, regmap);
+	if (IS_ERR(mux))
+		return PTR_ERR(mux);
+
+	clk_hw_register_clkdev(&mux->hw, "async3", "da850-psc1");
+
+	/* pll1_sysclk2 is not affected by CPU scaling, so use it for async3 */
+	parent = clk_hw_get_parent_by_index(&mux->hw, 1);
+	if (parent)
+		clk_set_parent(mux->hw.clk, parent->clk);
+	else
+		dev_warn(dev, "Failed to find async3 parent clock\n");
+
+	return 0;
+}
+
+static int __init
+of_da8xx_cfgchip_init_mux_clock(struct device *dev,
+				const struct da8xx_cfgchip_mux_clk_info *info,
+				struct regmap *regmap)
+{
+	struct da8xx_cfgchip_mux_clk *mux;
+
+	mux = da8xx_cfgchip_mux_clk_register(dev, info, regmap);
+	if (IS_ERR(mux))
+		return PTR_ERR(mux);
+
+	return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, &mux->hw);
+}
+
+static int __init of_da850_async1_init(struct device *dev, struct regmap *regmap)
+{
+	return of_da8xx_cfgchip_init_mux_clock(dev, &da850_async1_info, regmap);
+}
+
+static int __init of_da850_async3_init(struct device *dev, struct regmap *regmap)
+{
+	return of_da8xx_cfgchip_init_mux_clock(dev, &da850_async3_info, regmap);
+}
+
+/* --- USB 2.0 PHY clock --- */
+
+struct da8xx_usb0_clk48 {
+	struct clk_hw hw;
+	struct clk *fck;
+	struct regmap *regmap;
+};
+
+#define to_da8xx_usb0_clk48(_hw) \
+	container_of((_hw), struct da8xx_usb0_clk48, hw)
+
+static int da8xx_usb0_clk48_prepare(struct clk_hw *hw)
+{
+	struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
+
+	/* The USB 2.0 PSC clock is only needed temporarily during the USB 2.0
+	 * PHY clock enable, but since clk_prepare() can't be called in an
+	 * atomic context (i.e. in clk_enable()), we have to prepare it here.
+	 */
+	return clk_prepare(usb0->fck);
+}
+
+static void da8xx_usb0_clk48_unprepare(struct clk_hw *hw)
+{
+	struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
+
+	clk_unprepare(usb0->fck);
+}
+
+static int da8xx_usb0_clk48_enable(struct clk_hw *hw)
+{
+	struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
+	unsigned int mask, val;
+	int ret;
+
+	/* Locking the USB 2.O PLL requires that the USB 2.O PSC is enabled
+	 * temporaily. It can be turned back off once the PLL is locked.
+	 */
+	clk_enable(usb0->fck);
+
+	/* Turn on the USB 2.0 PHY, but just the PLL, and not OTG. The USB 1.1
+	 * PHY may use the USB 2.0 PLL clock without USB 2.0 OTG being used.
+	 */
+	mask = CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_PHY_PLLON;
+	val = CFGCHIP2_PHY_PLLON;
+
+	regmap_write_bits(usb0->regmap, CFGCHIP(2), mask, val);
+	ret = regmap_read_poll_timeout(usb0->regmap, CFGCHIP(2), val,
+				       val & CFGCHIP2_PHYCLKGD, 0, 500000);
+
+	clk_disable(usb0->fck);
+
+	return ret;
+}
+
+static void da8xx_usb0_clk48_disable(struct clk_hw *hw)
+{
+	struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
+	unsigned int val;
+
+	val = CFGCHIP2_PHYPWRDN;
+	regmap_write_bits(usb0->regmap, CFGCHIP(2), val, val);
+}
+
+static int da8xx_usb0_clk48_is_enabled(struct clk_hw *hw)
+{
+	struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
+	unsigned int val;
+
+	regmap_read(usb0->regmap, CFGCHIP(2), &val);
+
+	return !!(val & CFGCHIP2_PHYCLKGD);
+}
+
+static unsigned long da8xx_usb0_clk48_recalc_rate(struct clk_hw *hw,
+						  unsigned long parent_rate)
+{
+	struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
+	unsigned int mask, val;
+
+	/* The parent clock rate must be one of the following */
+	mask = CFGCHIP2_REFFREQ_MASK;
+	switch (parent_rate) {
+	case 12000000:
+		val = CFGCHIP2_REFFREQ_12MHZ;
+		break;
+	case 13000000:
+		val = CFGCHIP2_REFFREQ_13MHZ;
+		break;
+	case 19200000:
+		val = CFGCHIP2_REFFREQ_19_2MHZ;
+		break;
+	case 20000000:
+		val = CFGCHIP2_REFFREQ_20MHZ;
+		break;
+	case 24000000:
+		val = CFGCHIP2_REFFREQ_24MHZ;
+		break;
+	case 26000000:
+		val = CFGCHIP2_REFFREQ_26MHZ;
+		break;
+	case 38400000:
+		val = CFGCHIP2_REFFREQ_38_4MHZ;
+		break;
+	case 40000000:
+		val = CFGCHIP2_REFFREQ_40MHZ;
+		break;
+	case 48000000:
+		val = CFGCHIP2_REFFREQ_48MHZ;
+		break;
+	default:
+		return 0;
+	}
+
+	regmap_write_bits(usb0->regmap, CFGCHIP(2), mask, val);
+
+	/* USB 2.0 PLL always supplies 48MHz */
+	return 48000000;
+}
+
+static int da8xx_usb0_clk48_determine_rate(struct clk_hw *hw,
+					   struct clk_rate_request *req)
+{
+	req->rate = 48000000;
+
+	return 0;
+}
+
+static int da8xx_usb0_clk48_set_parent(struct clk_hw *hw, u8 index)
+{
+	struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
+
+	return regmap_write_bits(usb0->regmap, CFGCHIP(2),
+				 CFGCHIP2_USB2PHYCLKMUX,
+				 index ? CFGCHIP2_USB2PHYCLKMUX : 0);
+}
+
+static u8 da8xx_usb0_clk48_get_parent(struct clk_hw *hw)
+{
+	struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
+	unsigned int val;
+
+	regmap_read(usb0->regmap, CFGCHIP(2), &val);
+
+	return (val & CFGCHIP2_USB2PHYCLKMUX) ? 1 : 0;
+}
+
+static const struct clk_ops da8xx_usb0_clk48_ops = {
+	.prepare	= da8xx_usb0_clk48_prepare,
+	.unprepare	= da8xx_usb0_clk48_unprepare,
+	.enable		= da8xx_usb0_clk48_enable,
+	.disable	= da8xx_usb0_clk48_disable,
+	.is_enabled	= da8xx_usb0_clk48_is_enabled,
+	.recalc_rate	= da8xx_usb0_clk48_recalc_rate,
+	.determine_rate	= da8xx_usb0_clk48_determine_rate,
+	.set_parent	= da8xx_usb0_clk48_set_parent,
+	.get_parent	= da8xx_usb0_clk48_get_parent,
+};
+
+static struct da8xx_usb0_clk48 *
+da8xx_cfgchip_register_usb0_clk48(struct device *dev,
+				  struct regmap *regmap)
+{
+	const char * const parent_names[] = { "usb_refclkin", "pll0_auxclk" };
+	struct clk *fck_clk;
+	struct da8xx_usb0_clk48 *usb0;
+	struct clk_init_data init;
+	int ret;
+
+	fck_clk = devm_clk_get(dev, "fck");
+	if (IS_ERR(fck_clk)) {
+		dev_err_probe(dev, PTR_ERR(fck_clk), "Missing fck clock\n");
+		return ERR_CAST(fck_clk);
+	}
+
+	usb0 = devm_kzalloc(dev, sizeof(*usb0), GFP_KERNEL);
+	if (!usb0)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = "usb0_clk48";
+	init.ops = &da8xx_usb0_clk48_ops;
+	init.parent_names = parent_names;
+	init.num_parents = 2;
+
+	usb0->hw.init = &init;
+	usb0->fck = fck_clk;
+	usb0->regmap = regmap;
+
+	ret = devm_clk_hw_register(dev, &usb0->hw);
+	if (ret < 0)
+		return ERR_PTR(ret);
+
+	return usb0;
+}
+
+/* --- USB 1.1 PHY clock --- */
+
+struct da8xx_usb1_clk48 {
+	struct clk_hw hw;
+	struct regmap *regmap;
+};
+
+#define to_da8xx_usb1_clk48(_hw) \
+	container_of((_hw), struct da8xx_usb1_clk48, hw)
+
+static int da8xx_usb1_clk48_set_parent(struct clk_hw *hw, u8 index)
+{
+	struct da8xx_usb1_clk48 *usb1 = to_da8xx_usb1_clk48(hw);
+
+	return regmap_write_bits(usb1->regmap, CFGCHIP(2),
+				 CFGCHIP2_USB1PHYCLKMUX,
+				 index ? CFGCHIP2_USB1PHYCLKMUX : 0);
+}
+
+static u8 da8xx_usb1_clk48_get_parent(struct clk_hw *hw)
+{
+	struct da8xx_usb1_clk48 *usb1 = to_da8xx_usb1_clk48(hw);
+	unsigned int val;
+
+	regmap_read(usb1->regmap, CFGCHIP(2), &val);
+
+	return (val & CFGCHIP2_USB1PHYCLKMUX) ? 1 : 0;
+}
+
+static const struct clk_ops da8xx_usb1_clk48_ops = {
+	.determine_rate	= clk_hw_determine_rate_no_reparent,
+	.set_parent	= da8xx_usb1_clk48_set_parent,
+	.get_parent	= da8xx_usb1_clk48_get_parent,
+};
+
+/**
+ * da8xx_cfgchip_register_usb1_clk48 - Register a new USB 1.1 PHY clock
+ * @dev: The device
+ * @regmap: The CFGCHIP regmap
+ */
+static struct da8xx_usb1_clk48 *
+da8xx_cfgchip_register_usb1_clk48(struct device *dev,
+				  struct regmap *regmap)
+{
+	const char * const parent_names[] = { "usb0_clk48", "usb_refclkin" };
+	struct da8xx_usb1_clk48 *usb1;
+	struct clk_init_data init;
+	int ret;
+
+	usb1 = devm_kzalloc(dev, sizeof(*usb1), GFP_KERNEL);
+	if (!usb1)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = "usb1_clk48";
+	init.ops = &da8xx_usb1_clk48_ops;
+	init.parent_names = parent_names;
+	init.num_parents = 2;
+
+	usb1->hw.init = &init;
+	usb1->regmap = regmap;
+
+	ret = devm_clk_hw_register(dev, &usb1->hw);
+	if (ret < 0)
+		return ERR_PTR(ret);
+
+	return usb1;
+}
+
+static int da8xx_cfgchip_register_usb_phy_clk(struct device *dev,
+					      struct regmap *regmap)
+{
+	struct da8xx_usb0_clk48 *usb0;
+	struct da8xx_usb1_clk48 *usb1;
+	struct clk_hw *parent;
+
+	usb0 = da8xx_cfgchip_register_usb0_clk48(dev, regmap);
+	if (IS_ERR(usb0))
+		return PTR_ERR(usb0);
+
+	/*
+	 * All existing boards use pll0_auxclk as the parent and new boards
+	 * should use device tree, so hard-coding the value (1) here.
+	 */
+	parent = clk_hw_get_parent_by_index(&usb0->hw, 1);
+	if (parent)
+		clk_set_parent(usb0->hw.clk, parent->clk);
+	else
+		dev_warn(dev, "Failed to find usb0 parent clock\n");
+
+	usb1 = da8xx_cfgchip_register_usb1_clk48(dev, regmap);
+	if (IS_ERR(usb1))
+		return PTR_ERR(usb1);
+
+	/*
+	 * All existing boards use usb0_clk48 as the parent and new boards
+	 * should use device tree, so hard-coding the value (0) here.
+	 */
+	parent = clk_hw_get_parent_by_index(&usb1->hw, 0);
+	if (parent)
+		clk_set_parent(usb1->hw.clk, parent->clk);
+	else
+		dev_warn(dev, "Failed to find usb1 parent clock\n");
+
+	clk_hw_register_clkdev(&usb0->hw, "usb0_clk48", "da8xx-usb-phy");
+	clk_hw_register_clkdev(&usb1->hw, "usb1_clk48", "da8xx-usb-phy");
+
+	return 0;
+}
+
+static int of_da8xx_usb_phy_clk_init(struct device *dev, struct regmap *regmap)
+{
+	struct clk_hw_onecell_data *clk_data;
+	struct da8xx_usb0_clk48 *usb0;
+	struct da8xx_usb1_clk48 *usb1;
+
+	clk_data = devm_kzalloc(dev, struct_size(clk_data, hws, 2),
+				GFP_KERNEL);
+	if (!clk_data)
+		return -ENOMEM;
+
+	clk_data->num = 2;
+
+	usb0 = da8xx_cfgchip_register_usb0_clk48(dev, regmap);
+	if (IS_ERR(usb0)) {
+		if (PTR_ERR(usb0) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+
+		dev_warn(dev, "Failed to register usb0_clk48 (%ld)\n",
+			 PTR_ERR(usb0));
+
+		clk_data->hws[0] = ERR_PTR(-ENOENT);
+	} else {
+		clk_data->hws[0] = &usb0->hw;
+	}
+
+	usb1 = da8xx_cfgchip_register_usb1_clk48(dev, regmap);
+	if (IS_ERR(usb1)) {
+		if (PTR_ERR(usb1) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+
+		dev_warn(dev, "Failed to register usb1_clk48 (%ld)\n",
+			 PTR_ERR(usb1));
+
+		clk_data->hws[1] = ERR_PTR(-ENOENT);
+	} else {
+		clk_data->hws[1] = &usb1->hw;
+	}
+
+	return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, clk_data);
+}
+
+/* --- platform device --- */
+
+static const struct of_device_id da8xx_cfgchip_of_match[] = {
+	{
+		.compatible = "ti,da830-tbclksync",
+		.data = of_da8xx_tbclksync_init,
+	},
+	{
+		.compatible = "ti,da830-div4p5ena",
+		.data = of_da8xx_div4p5ena_init,
+	},
+	{
+		.compatible = "ti,da850-async1-clksrc",
+		.data = of_da850_async1_init,
+	},
+	{
+		.compatible = "ti,da850-async3-clksrc",
+		.data = of_da850_async3_init,
+	},
+	{
+		.compatible = "ti,da830-usb-phy-clocks",
+		.data = of_da8xx_usb_phy_clk_init,
+	},
+	{ }
+};
+
+static const struct platform_device_id da8xx_cfgchip_id_table[] = {
+	{
+		.name = "da830-tbclksync",
+		.driver_data = (kernel_ulong_t)da8xx_cfgchip_register_tbclk,
+	},
+	{
+		.name = "da830-div4p5ena",
+		.driver_data = (kernel_ulong_t)da8xx_cfgchip_register_div4p5,
+	},
+	{
+		.name = "da850-async1-clksrc",
+		.driver_data = (kernel_ulong_t)da8xx_cfgchip_register_async1,
+	},
+	{
+		.name = "da850-async3-clksrc",
+		.driver_data = (kernel_ulong_t)da850_cfgchip_register_async3,
+	},
+	{
+		.name = "da830-usb-phy-clks",
+		.driver_data = (kernel_ulong_t)da8xx_cfgchip_register_usb_phy_clk,
+	},
+	{ }
+};
+
+typedef int (*da8xx_cfgchip_init)(struct device *dev, struct regmap *regmap);
+
+static int da8xx_cfgchip_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct da8xx_cfgchip_clk_platform_data *pdata = dev->platform_data;
+	const struct of_device_id *of_id;
+	da8xx_cfgchip_init clk_init = NULL;
+	struct regmap *regmap = NULL;
+
+	of_id = of_match_device(da8xx_cfgchip_of_match, dev);
+	if (of_id) {
+		struct device_node *parent;
+
+		clk_init = of_id->data;
+		parent = of_get_parent(dev->of_node);
+		regmap = syscon_node_to_regmap(parent);
+		of_node_put(parent);
+	} else if (pdev->id_entry && pdata) {
+		clk_init = (void *)pdev->id_entry->driver_data;
+		regmap = pdata->cfgchip;
+	}
+
+	if (!clk_init) {
+		dev_err(dev, "unable to find driver data\n");
+		return -EINVAL;
+	}
+
+	if (IS_ERR_OR_NULL(regmap)) {
+		dev_err(dev, "no regmap for CFGCHIP syscon\n");
+		return regmap ? PTR_ERR(regmap) : -ENOENT;
+	}
+
+	return clk_init(dev, regmap);
+}
+
+static struct platform_driver da8xx_cfgchip_driver = {
+	.probe		= da8xx_cfgchip_probe,
+	.driver		= {
+		.name		= "da8xx-cfgchip-clk",
+		.of_match_table	= da8xx_cfgchip_of_match,
+	},
+	.id_table	= da8xx_cfgchip_id_table,
+};
+
+static int __init da8xx_cfgchip_driver_init(void)
+{
+	return platform_driver_register(&da8xx_cfgchip_driver);
+}
+
+/* has to be postcore_initcall because PSC devices depend on the async3 clock */
+postcore_initcall(da8xx_cfgchip_driver_init);
diff --git a/drivers/clk/davinci/pll-da830.c b/drivers/clk/davinci/pll-da830.c
new file mode 100644
index 0000000000..0a0d06fb25
--- /dev/null
+++ b/drivers/clk/davinci/pll-da830.c
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PLL clock descriptions for TI DA830/OMAP-L137/AM17XX
+ *
+ * Copyright (C) 2018 David Lechner <david@lechnology.com>
+ */
+
+#include <linux/clkdev.h>
+#include <linux/clk/davinci.h>
+#include <linux/bitops.h>
+#include <linux/init.h>
+#include <linux/types.h>
+
+#include "pll.h"
+
+static const struct davinci_pll_clk_info da830_pll_info = {
+	.name = "pll0",
+	.pllm_mask = GENMASK(4, 0),
+	.pllm_min = 4,
+	.pllm_max = 32,
+	.pllout_min_rate = 300000000,
+	.pllout_max_rate = 600000000,
+	.flags = PLL_HAS_CLKMODE | PLL_HAS_PREDIV | PLL_HAS_POSTDIV,
+};
+
+/*
+ * NB: Technically, the clocks flagged as SYSCLK_FIXED_DIV are "fixed ratio",
+ * meaning that we could change the divider as long as we keep the correct
+ * ratio between all of the clocks, but we don't support that because there is
+ * currently not a need for it.
+ */
+
+SYSCLK(2, pll0_sysclk2, pll0_pllen, 5, SYSCLK_FIXED_DIV);
+SYSCLK(3, pll0_sysclk3, pll0_pllen, 5, 0);
+SYSCLK(4, pll0_sysclk4, pll0_pllen, 5, SYSCLK_FIXED_DIV);
+SYSCLK(5, pll0_sysclk5, pll0_pllen, 5, 0);
+SYSCLK(6, pll0_sysclk6, pll0_pllen, 5, SYSCLK_FIXED_DIV);
+SYSCLK(7, pll0_sysclk7, pll0_pllen, 5, 0);
+
+int da830_pll_init(struct device *dev, void __iomem *base, struct regmap *cfgchip)
+{
+	struct clk *clk;
+
+	davinci_pll_clk_register(dev, &da830_pll_info, "ref_clk", base, cfgchip);
+
+	clk = davinci_pll_sysclk_register(dev, &pll0_sysclk2, base);
+	clk_register_clkdev(clk, "pll0_sysclk2", "da830-psc0");
+	clk_register_clkdev(clk, "pll0_sysclk2", "da830-psc1");
+
+	clk = davinci_pll_sysclk_register(dev, &pll0_sysclk3, base);
+	clk_register_clkdev(clk, "pll0_sysclk3", "da830-psc0");
+
+	clk = davinci_pll_sysclk_register(dev, &pll0_sysclk4, base);
+	clk_register_clkdev(clk, "pll0_sysclk4", "da830-psc0");
+	clk_register_clkdev(clk, "pll0_sysclk4", "da830-psc1");
+
+	clk = davinci_pll_sysclk_register(dev, &pll0_sysclk5, base);
+	clk_register_clkdev(clk, "pll0_sysclk5", "da830-psc1");
+
+	clk = davinci_pll_sysclk_register(dev, &pll0_sysclk6, base);
+	clk_register_clkdev(clk, "pll0_sysclk6", "da830-psc0");
+
+	clk = davinci_pll_sysclk_register(dev, &pll0_sysclk7, base);
+
+	clk = davinci_pll_auxclk_register(dev, "pll0_auxclk", base);
+	clk_register_clkdev(clk, NULL, "i2c_davinci.1");
+	clk_register_clkdev(clk, "timer0", NULL);
+	clk_register_clkdev(clk, NULL, "davinci-wdt");
+
+	return 0;
+}
diff --git a/drivers/clk/davinci/pll-da850.c b/drivers/clk/davinci/pll-da850.c
new file mode 100644
index 0000000000..bf120bec59
--- /dev/null
+++ b/drivers/clk/davinci/pll-da850.c
@@ -0,0 +1,228 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PLL clock descriptions for TI DA850/OMAP-L138/AM18XX
+ *
+ * Copyright (C) 2018 David Lechner <david@lechnology.com>
+ */
+
+#include <linux/bitops.h>
+#include <linux/clk-provider.h>
+#include <linux/clk/davinci.h>
+#include <linux/clkdev.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mfd/da8xx-cfgchip.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_address.h>
+#include <linux/of.h>
+#include <linux/types.h>
+
+#include "pll.h"
+
+#define OCSEL_OCSRC_OSCIN		0x14
+#define OCSEL_OCSRC_PLL0_SYSCLK(n)	(0x16 + (n))
+#define OCSEL_OCSRC_PLL1_OBSCLK		0x1e
+#define OCSEL_OCSRC_PLL1_SYSCLK(n)	(0x16 + (n))
+
+static const struct davinci_pll_clk_info da850_pll0_info = {
+	.name = "pll0",
+	.unlock_reg = CFGCHIP(0),
+	.unlock_mask = CFGCHIP0_PLL_MASTER_LOCK,
+	.pllm_mask = GENMASK(4, 0),
+	.pllm_min = 4,
+	.pllm_max = 32,
+	.pllout_min_rate = 300000000,
+	.pllout_max_rate = 600000000,
+	.flags = PLL_HAS_CLKMODE | PLL_HAS_PREDIV | PLL_HAS_POSTDIV |
+		 PLL_HAS_EXTCLKSRC,
+};
+
+/*
+ * NB: Technically, the clocks flagged as SYSCLK_FIXED_DIV are "fixed ratio",
+ * meaning that we could change the divider as long as we keep the correct
+ * ratio between all of the clocks, but we don't support that because there is
+ * currently not a need for it.
+ */
+
+SYSCLK(1, pll0_sysclk1, pll0_pllen, 5, SYSCLK_FIXED_DIV);
+SYSCLK(2, pll0_sysclk2, pll0_pllen, 5, SYSCLK_FIXED_DIV);
+SYSCLK(3, pll0_sysclk3, pll0_pllen, 5, 0);
+SYSCLK(4, pll0_sysclk4, pll0_pllen, 5, SYSCLK_FIXED_DIV);
+SYSCLK(5, pll0_sysclk5, pll0_pllen, 5, 0);
+SYSCLK(6, pll0_sysclk6, pll0_pllen, 5, SYSCLK_ARM_RATE | SYSCLK_FIXED_DIV);
+SYSCLK(7, pll0_sysclk7, pll0_pllen, 5, 0);
+
+static const char * const da850_pll0_obsclk_parent_names[] = {
+	"oscin",
+	"pll0_sysclk1",
+	"pll0_sysclk2",
+	"pll0_sysclk3",
+	"pll0_sysclk4",
+	"pll0_sysclk5",
+	"pll0_sysclk6",
+	"pll0_sysclk7",
+	"pll1_obsclk",
+};
+
+static u32 da850_pll0_obsclk_table[] = {
+	OCSEL_OCSRC_OSCIN,
+	OCSEL_OCSRC_PLL0_SYSCLK(1),
+	OCSEL_OCSRC_PLL0_SYSCLK(2),
+	OCSEL_OCSRC_PLL0_SYSCLK(3),
+	OCSEL_OCSRC_PLL0_SYSCLK(4),
+	OCSEL_OCSRC_PLL0_SYSCLK(5),
+	OCSEL_OCSRC_PLL0_SYSCLK(6),
+	OCSEL_OCSRC_PLL0_SYSCLK(7),
+	OCSEL_OCSRC_PLL1_OBSCLK,
+};
+
+static const struct davinci_pll_obsclk_info da850_pll0_obsclk_info = {
+	.name = "pll0_obsclk",
+	.parent_names = da850_pll0_obsclk_parent_names,
+	.num_parents = ARRAY_SIZE(da850_pll0_obsclk_parent_names),
+	.table = da850_pll0_obsclk_table,
+	.ocsrc_mask = GENMASK(4, 0),
+};
+
+int da850_pll0_init(struct device *dev, void __iomem *base, struct regmap *cfgchip)
+{
+	struct clk *clk;
+
+	davinci_pll_clk_register(dev, &da850_pll0_info, "ref_clk", base, cfgchip);
+
+	clk = davinci_pll_sysclk_register(dev, &pll0_sysclk1, base);
+	clk_register_clkdev(clk, "pll0_sysclk1", "da850-psc0");
+
+	clk = davinci_pll_sysclk_register(dev, &pll0_sysclk2, base);
+	clk_register_clkdev(clk, "pll0_sysclk2", "da850-psc0");
+	clk_register_clkdev(clk, "pll0_sysclk2", "da850-psc1");
+	clk_register_clkdev(clk, "pll0_sysclk2", "da850-async3-clksrc");
+
+	clk = davinci_pll_sysclk_register(dev, &pll0_sysclk3, base);
+	clk_register_clkdev(clk, "pll0_sysclk3", "da850-async1-clksrc");
+
+	clk = davinci_pll_sysclk_register(dev, &pll0_sysclk4, base);
+	clk_register_clkdev(clk, "pll0_sysclk4", "da850-psc0");
+	clk_register_clkdev(clk, "pll0_sysclk4", "da850-psc1");
+
+	davinci_pll_sysclk_register(dev, &pll0_sysclk5, base);
+
+	clk = davinci_pll_sysclk_register(dev, &pll0_sysclk6, base);
+	clk_register_clkdev(clk, "pll0_sysclk6", "da850-psc0");
+
+	davinci_pll_sysclk_register(dev, &pll0_sysclk7, base);
+
+	davinci_pll_auxclk_register(dev, "pll0_auxclk", base);
+
+	clk = clk_register_fixed_factor(dev, "async2", "pll0_auxclk",
+					CLK_IS_CRITICAL, 1, 1);
+
+	clk_register_clkdev(clk, NULL, "i2c_davinci.1");
+	clk_register_clkdev(clk, "timer0", NULL);
+	clk_register_clkdev(clk, NULL, "davinci-wdt");
+
+	davinci_pll_obsclk_register(dev, &da850_pll0_obsclk_info, base);
+
+	return 0;
+}
+
+static const struct davinci_pll_sysclk_info *da850_pll0_sysclk_info[] = {
+	&pll0_sysclk1,
+	&pll0_sysclk2,
+	&pll0_sysclk3,
+	&pll0_sysclk4,
+	&pll0_sysclk5,
+	&pll0_sysclk6,
+	&pll0_sysclk7,
+	NULL
+};
+
+void of_da850_pll0_init(struct device_node *node)
+{
+	void __iomem *base;
+	struct regmap *cfgchip;
+
+	base = of_iomap(node, 0);
+	if (!base) {
+		pr_err("%s: ioremap failed\n", __func__);
+		return;
+	}
+
+	cfgchip = syscon_regmap_lookup_by_compatible("ti,da830-cfgchip");
+
+	of_davinci_pll_init(NULL, node, &da850_pll0_info,
+			    &da850_pll0_obsclk_info,
+			    da850_pll0_sysclk_info, 7, base, cfgchip);
+}
+
+static const struct davinci_pll_clk_info da850_pll1_info = {
+	.name = "pll1",
+	.unlock_reg = CFGCHIP(3),
+	.unlock_mask = CFGCHIP3_PLL1_MASTER_LOCK,
+	.pllm_mask = GENMASK(4, 0),
+	.pllm_min = 4,
+	.pllm_max = 32,
+	.pllout_min_rate = 300000000,
+	.pllout_max_rate = 600000000,
+	.flags = PLL_HAS_POSTDIV,
+};
+
+SYSCLK(1, pll1_sysclk1, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED);
+SYSCLK(2, pll1_sysclk2, pll1_pllen, 5, 0);
+SYSCLK(3, pll1_sysclk3, pll1_pllen, 5, 0);
+
+static const char * const da850_pll1_obsclk_parent_names[] = {
+	"oscin",
+	"pll1_sysclk1",
+	"pll1_sysclk2",
+	"pll1_sysclk3",
+};
+
+static u32 da850_pll1_obsclk_table[] = {
+	OCSEL_OCSRC_OSCIN,
+	OCSEL_OCSRC_PLL1_SYSCLK(1),
+	OCSEL_OCSRC_PLL1_SYSCLK(2),
+	OCSEL_OCSRC_PLL1_SYSCLK(3),
+};
+
+static const struct davinci_pll_obsclk_info da850_pll1_obsclk_info = {
+	.name = "pll1_obsclk",
+	.parent_names = da850_pll1_obsclk_parent_names,
+	.num_parents = ARRAY_SIZE(da850_pll1_obsclk_parent_names),
+	.table = da850_pll1_obsclk_table,
+	.ocsrc_mask = GENMASK(4, 0),
+};
+
+int da850_pll1_init(struct device *dev, void __iomem *base, struct regmap *cfgchip)
+{
+	struct clk *clk;
+
+	davinci_pll_clk_register(dev, &da850_pll1_info, "oscin", base, cfgchip);
+
+	davinci_pll_sysclk_register(dev, &pll1_sysclk1, base);
+
+	clk = davinci_pll_sysclk_register(dev, &pll1_sysclk2, base);
+	clk_register_clkdev(clk, "pll1_sysclk2", "da850-async3-clksrc");
+
+	davinci_pll_sysclk_register(dev, &pll1_sysclk3, base);
+
+	davinci_pll_obsclk_register(dev, &da850_pll1_obsclk_info, base);
+
+	return 0;
+}
+
+static const struct davinci_pll_sysclk_info *da850_pll1_sysclk_info[] = {
+	&pll1_sysclk1,
+	&pll1_sysclk2,
+	&pll1_sysclk3,
+	NULL
+};
+
+int of_da850_pll1_init(struct device *dev, void __iomem *base, struct regmap *cfgchip)
+{
+	return of_davinci_pll_init(dev, dev->of_node, &da850_pll1_info,
+				   &da850_pll1_obsclk_info,
+				   da850_pll1_sysclk_info, 3, base, cfgchip);
+}
diff --git a/drivers/clk/davinci/pll.c b/drivers/clk/davinci/pll.c
new file mode 100644
index 0000000000..87bdf88790
--- /dev/null
+++ b/drivers/clk/davinci/pll.c
@@ -0,0 +1,992 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PLL clock driver for TI Davinci SoCs
+ *
+ * Copyright (C) 2018 David Lechner <david@lechnology.com>
+ *
+ * Based on arch/arm/mach-davinci/clock.c
+ * Copyright (C) 2006-2007 Texas Instruments.
+ * Copyright (C) 2008-2009 Deep Root Systems, LLC
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/clk/davinci.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/notifier.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_data/clk-davinci-pll.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "pll.h"
+
+#define MAX_NAME_SIZE	20
+#define OSCIN_CLK_NAME	"oscin"
+
+#define REVID		0x000
+#define PLLCTL		0x100
+#define OCSEL		0x104
+#define PLLSECCTL	0x108
+#define PLLM		0x110
+#define PREDIV		0x114
+#define PLLDIV1		0x118
+#define PLLDIV2		0x11c
+#define PLLDIV3		0x120
+#define OSCDIV		0x124
+#define POSTDIV		0x128
+#define BPDIV		0x12c
+#define PLLCMD		0x138
+#define PLLSTAT		0x13c
+#define ALNCTL		0x140
+#define DCHANGE		0x144
+#define CKEN		0x148
+#define CKSTAT		0x14c
+#define SYSTAT		0x150
+#define PLLDIV4		0x160
+#define PLLDIV5		0x164
+#define PLLDIV6		0x168
+#define PLLDIV7		0x16c
+#define PLLDIV8		0x170
+#define PLLDIV9		0x174
+
+#define PLLCTL_PLLEN		BIT(0)
+#define PLLCTL_PLLPWRDN		BIT(1)
+#define PLLCTL_PLLRST		BIT(3)
+#define PLLCTL_PLLDIS		BIT(4)
+#define PLLCTL_PLLENSRC		BIT(5)
+#define PLLCTL_CLKMODE		BIT(8)
+
+/* shared by most *DIV registers */
+#define DIV_RATIO_SHIFT		0
+#define DIV_RATIO_WIDTH		5
+#define DIV_ENABLE_SHIFT	15
+
+#define PLLCMD_GOSET		BIT(0)
+#define PLLSTAT_GOSTAT		BIT(0)
+
+#define CKEN_OBSCLK_SHIFT	1
+#define CKEN_AUXEN_SHIFT	0
+
+/*
+ * OMAP-L138 system reference guide recommends a wait for 4 OSCIN/CLKIN
+ * cycles to ensure that the PLLC has switched to bypass mode. Delay of 1us
+ * ensures we are good for all > 4MHz OSCIN/CLKIN inputs. Typically the input
+ * is ~25MHz. Units are micro seconds.
+ */
+#define PLL_BYPASS_TIME		1
+
+/* From OMAP-L138 datasheet table 6-4. Units are micro seconds */
+#define PLL_RESET_TIME		1
+
+/*
+ * From OMAP-L138 datasheet table 6-4; assuming prediv = 1, sqrt(pllm) = 4
+ * Units are micro seconds.
+ */
+#define PLL_LOCK_TIME		20
+
+/**
+ * struct davinci_pll_clk - Main PLL clock (aka PLLOUT)
+ * @hw: clk_hw for the pll
+ * @base: Base memory address
+ * @pllm_min: The minimum allowable PLLM[PLLM] value
+ * @pllm_max: The maximum allowable PLLM[PLLM] value
+ * @pllm_mask: Bitmask for PLLM[PLLM] value
+ */
+struct davinci_pll_clk {
+	struct clk_hw hw;
+	void __iomem *base;
+	u32 pllm_min;
+	u32 pllm_max;
+	u32 pllm_mask;
+};
+
+#define to_davinci_pll_clk(_hw) \
+	container_of((_hw), struct davinci_pll_clk, hw)
+
+static unsigned long davinci_pll_recalc_rate(struct clk_hw *hw,
+					     unsigned long parent_rate)
+{
+	struct davinci_pll_clk *pll = to_davinci_pll_clk(hw);
+	unsigned long rate = parent_rate;
+	u32 mult;
+
+	mult = readl(pll->base + PLLM) & pll->pllm_mask;
+	rate *= mult + 1;
+
+	return rate;
+}
+
+static int davinci_pll_determine_rate(struct clk_hw *hw,
+				      struct clk_rate_request *req)
+{
+	struct davinci_pll_clk *pll = to_davinci_pll_clk(hw);
+	struct clk_hw *parent = req->best_parent_hw;
+	unsigned long parent_rate = req->best_parent_rate;
+	unsigned long rate = req->rate;
+	unsigned long best_rate, r;
+	u32 mult;
+
+	/* there is a limited range of valid outputs (see datasheet) */
+	if (rate < req->min_rate)
+		return -EINVAL;
+
+	rate = min(rate, req->max_rate);
+	mult = rate / parent_rate;
+	best_rate = parent_rate * mult;
+
+	/* easy case when there is no PREDIV */
+	if (!(clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT)) {
+		if (best_rate < req->min_rate)
+			return -EINVAL;
+
+		if (mult < pll->pllm_min || mult > pll->pllm_max)
+			return -EINVAL;
+
+		req->rate = best_rate;
+
+		return 0;
+	}
+
+	/* see if the PREDIV clock can help us */
+	best_rate = 0;
+
+	for (mult = pll->pllm_min; mult <= pll->pllm_max; mult++) {
+		parent_rate = clk_hw_round_rate(parent, rate / mult);
+		r = parent_rate * mult;
+		if (r < req->min_rate)
+			continue;
+		if (r > rate || r > req->max_rate)
+			break;
+		if (r > best_rate) {
+			best_rate = r;
+			req->rate = best_rate;
+			req->best_parent_rate = parent_rate;
+			if (best_rate == rate)
+				break;
+		}
+	}
+
+	return 0;
+}
+
+static int davinci_pll_set_rate(struct clk_hw *hw, unsigned long rate,
+				unsigned long parent_rate)
+{
+	struct davinci_pll_clk *pll = to_davinci_pll_clk(hw);
+	u32 mult;
+
+	mult = rate / parent_rate;
+	writel(mult - 1, pll->base + PLLM);
+
+	return 0;
+}
+
+#ifdef CONFIG_DEBUG_FS
+static void davinci_pll_debug_init(struct clk_hw *hw, struct dentry *dentry);
+#else
+#define davinci_pll_debug_init NULL
+#endif
+
+static const struct clk_ops davinci_pll_ops = {
+	.recalc_rate	= davinci_pll_recalc_rate,
+	.determine_rate	= davinci_pll_determine_rate,
+	.set_rate	= davinci_pll_set_rate,
+	.debug_init	= davinci_pll_debug_init,
+};
+
+/* PLLM works differently on DM365 */
+static unsigned long dm365_pll_recalc_rate(struct clk_hw *hw,
+					   unsigned long parent_rate)
+{
+	struct davinci_pll_clk *pll = to_davinci_pll_clk(hw);
+	unsigned long rate = parent_rate;
+	u32 mult;
+
+	mult = readl(pll->base + PLLM) & pll->pllm_mask;
+	rate *= mult * 2;
+
+	return rate;
+}
+
+static const struct clk_ops dm365_pll_ops = {
+	.recalc_rate	= dm365_pll_recalc_rate,
+	.debug_init	= davinci_pll_debug_init,
+};
+
+/**
+ * davinci_pll_div_register - common *DIV clock implementation
+ * @dev: The PLL platform device or NULL
+ * @name: the clock name
+ * @parent_name: the parent clock name
+ * @reg: the *DIV register
+ * @fixed: if true, the divider is a fixed value
+ * @flags: bitmap of CLK_* flags from clock-provider.h
+ */
+static struct clk *davinci_pll_div_register(struct device *dev,
+					    const char *name,
+					    const char *parent_name,
+					    void __iomem *reg,
+					    bool fixed, u32 flags)
+{
+	const char * const *parent_names = parent_name ? &parent_name : NULL;
+	int num_parents = parent_name ? 1 : 0;
+	const struct clk_ops *divider_ops = &clk_divider_ops;
+	struct clk_gate *gate;
+	struct clk_divider *divider;
+	struct clk *clk;
+	int ret;
+
+	gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+	if (!gate)
+		return ERR_PTR(-ENOMEM);
+
+	gate->reg = reg;
+	gate->bit_idx = DIV_ENABLE_SHIFT;
+
+	divider = kzalloc(sizeof(*divider), GFP_KERNEL);
+	if (!divider) {
+		ret = -ENOMEM;
+		goto err_free_gate;
+	}
+
+	divider->reg = reg;
+	divider->shift = DIV_RATIO_SHIFT;
+	divider->width = DIV_RATIO_WIDTH;
+
+	if (fixed) {
+		divider->flags |= CLK_DIVIDER_READ_ONLY;
+		divider_ops = &clk_divider_ro_ops;
+	}
+
+	clk = clk_register_composite(dev, name, parent_names, num_parents,
+				     NULL, NULL, &divider->hw, divider_ops,
+				     &gate->hw, &clk_gate_ops, flags);
+	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
+		goto err_free_divider;
+	}
+
+	return clk;
+
+err_free_divider:
+	kfree(divider);
+err_free_gate:
+	kfree(gate);
+
+	return ERR_PTR(ret);
+}
+
+struct davinci_pllen_clk {
+	struct clk_hw hw;
+	void __iomem *base;
+};
+
+#define to_davinci_pllen_clk(_hw) \
+	container_of((_hw), struct davinci_pllen_clk, hw)
+
+static const struct clk_ops davinci_pllen_ops = {
+	/* this clocks just uses the clock notification feature */
+};
+
+/*
+ * The PLL has to be switched into bypass mode while we are chaning the rate,
+ * so we do that on the PLLEN clock since it is the end of the line. This will
+ * switch to bypass before any of the parent clocks (PREDIV, PLL, POSTDIV) are
+ * changed and will switch back to the PLL after the changes have been made.
+ */
+static int davinci_pllen_rate_change(struct notifier_block *nb,
+				     unsigned long flags, void *data)
+{
+	struct clk_notifier_data *cnd = data;
+	struct clk_hw *hw = __clk_get_hw(cnd->clk);
+	struct davinci_pllen_clk *pll = to_davinci_pllen_clk(hw);
+	u32 ctrl;
+
+	ctrl = readl(pll->base + PLLCTL);
+
+	if (flags == PRE_RATE_CHANGE) {
+		/* Switch the PLL to bypass mode */
+		ctrl &= ~(PLLCTL_PLLENSRC | PLLCTL_PLLEN);
+		writel(ctrl, pll->base + PLLCTL);
+
+		udelay(PLL_BYPASS_TIME);
+
+		/* Reset and enable PLL */
+		ctrl &= ~(PLLCTL_PLLRST | PLLCTL_PLLDIS);
+		writel(ctrl, pll->base + PLLCTL);
+	} else {
+		udelay(PLL_RESET_TIME);
+
+		/* Bring PLL out of reset */
+		ctrl |= PLLCTL_PLLRST;
+		writel(ctrl, pll->base + PLLCTL);
+
+		udelay(PLL_LOCK_TIME);
+
+		/* Remove PLL from bypass mode */
+		ctrl |= PLLCTL_PLLEN;
+		writel(ctrl, pll->base + PLLCTL);
+	}
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block davinci_pllen_notifier = {
+	.notifier_call = davinci_pllen_rate_change,
+};
+
+/**
+ * davinci_pll_clk_register - Register a PLL clock
+ * @dev: The PLL platform device or NULL
+ * @info: The device-specific clock info
+ * @parent_name: The parent clock name
+ * @base: The PLL's memory region
+ * @cfgchip: CFGCHIP syscon regmap for info->unlock_reg or NULL
+ *
+ * This creates a series of clocks that represent the PLL.
+ *
+ *     OSCIN > [PREDIV >] PLL > [POSTDIV >] PLLEN
+ *
+ * - OSCIN is the parent clock (on secondary PLL, may come from primary PLL)
+ * - PREDIV and POSTDIV are optional (depends on the PLL controller)
+ * - PLL is the PLL output (aka PLLOUT)
+ * - PLLEN is the bypass multiplexer
+ *
+ * Returns: The PLLOUT clock or a negative error code.
+ */
+struct clk *davinci_pll_clk_register(struct device *dev,
+				     const struct davinci_pll_clk_info *info,
+				     const char *parent_name,
+				     void __iomem *base,
+				     struct regmap *cfgchip)
+{
+	char prediv_name[MAX_NAME_SIZE];
+	char pllout_name[MAX_NAME_SIZE];
+	char postdiv_name[MAX_NAME_SIZE];
+	char pllen_name[MAX_NAME_SIZE];
+	struct clk_init_data init;
+	struct davinci_pll_clk *pllout;
+	struct davinci_pllen_clk *pllen;
+	struct clk *oscin_clk = NULL;
+	struct clk *prediv_clk = NULL;
+	struct clk *pllout_clk;
+	struct clk *postdiv_clk = NULL;
+	struct clk *pllen_clk;
+	int ret;
+
+	if (info->flags & PLL_HAS_CLKMODE) {
+		/*
+		 * If a PLL has PLLCTL[CLKMODE], then it is the primary PLL.
+		 * We register a clock named "oscin" that serves as the internal
+		 * "input clock" domain shared by both PLLs (if there are 2)
+		 * and will be the parent clock to the AUXCLK, SYSCLKBP and
+		 * OBSCLK domains. NB: The various TRMs use "OSCIN" to mean
+		 * a number of different things. In this driver we use it to
+		 * mean the signal after the PLLCTL[CLKMODE] switch.
+		 */
+		oscin_clk = clk_register_fixed_factor(dev, OSCIN_CLK_NAME,
+						      parent_name, 0, 1, 1);
+		if (IS_ERR(oscin_clk))
+			return oscin_clk;
+
+		parent_name = OSCIN_CLK_NAME;
+	}
+
+	if (info->flags & PLL_HAS_PREDIV) {
+		bool fixed = info->flags & PLL_PREDIV_FIXED_DIV;
+		u32 flags = 0;
+
+		snprintf(prediv_name, MAX_NAME_SIZE, "%s_prediv", info->name);
+
+		if (info->flags & PLL_PREDIV_ALWAYS_ENABLED)
+			flags |= CLK_IS_CRITICAL;
+
+		/* Some? DM355 chips don't correctly report the PREDIV value */
+		if (info->flags & PLL_PREDIV_FIXED8)
+			prediv_clk = clk_register_fixed_factor(dev, prediv_name,
+							parent_name, flags, 1, 8);
+		else
+			prediv_clk = davinci_pll_div_register(dev, prediv_name,
+				parent_name, base + PREDIV, fixed, flags);
+		if (IS_ERR(prediv_clk)) {
+			ret = PTR_ERR(prediv_clk);
+			goto err_unregister_oscin;
+		}
+
+		parent_name = prediv_name;
+	}
+
+	/* Unlock writing to PLL registers */
+	if (info->unlock_reg) {
+		if (IS_ERR_OR_NULL(cfgchip))
+			dev_warn(dev, "Failed to get CFGCHIP (%ld)\n",
+				 PTR_ERR(cfgchip));
+		else
+			regmap_write_bits(cfgchip, info->unlock_reg,
+					  info->unlock_mask, 0);
+	}
+
+	pllout = kzalloc(sizeof(*pllout), GFP_KERNEL);
+	if (!pllout) {
+		ret = -ENOMEM;
+		goto err_unregister_prediv;
+	}
+
+	snprintf(pllout_name, MAX_NAME_SIZE, "%s_pllout", info->name);
+
+	init.name = pllout_name;
+	if (info->flags & PLL_PLLM_2X)
+		init.ops = &dm365_pll_ops;
+	else
+		init.ops = &davinci_pll_ops;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+	init.flags = 0;
+
+	if (info->flags & PLL_HAS_PREDIV)
+		init.flags |= CLK_SET_RATE_PARENT;
+
+	pllout->hw.init = &init;
+	pllout->base = base;
+	pllout->pllm_mask = info->pllm_mask;
+	pllout->pllm_min = info->pllm_min;
+	pllout->pllm_max = info->pllm_max;
+
+	pllout_clk = clk_register(dev, &pllout->hw);
+	if (IS_ERR(pllout_clk)) {
+		ret = PTR_ERR(pllout_clk);
+		goto err_free_pllout;
+	}
+
+	clk_hw_set_rate_range(&pllout->hw, info->pllout_min_rate,
+			      info->pllout_max_rate);
+
+	parent_name = pllout_name;
+
+	if (info->flags & PLL_HAS_POSTDIV) {
+		bool fixed = info->flags & PLL_POSTDIV_FIXED_DIV;
+		u32 flags = CLK_SET_RATE_PARENT;
+
+		snprintf(postdiv_name, MAX_NAME_SIZE, "%s_postdiv", info->name);
+
+		if (info->flags & PLL_POSTDIV_ALWAYS_ENABLED)
+			flags |= CLK_IS_CRITICAL;
+
+		postdiv_clk = davinci_pll_div_register(dev, postdiv_name,
+				parent_name, base + POSTDIV, fixed, flags);
+		if (IS_ERR(postdiv_clk)) {
+			ret = PTR_ERR(postdiv_clk);
+			goto err_unregister_pllout;
+		}
+
+		parent_name = postdiv_name;
+	}
+
+	pllen = kzalloc(sizeof(*pllen), GFP_KERNEL);
+	if (!pllen) {
+		ret = -ENOMEM;
+		goto err_unregister_postdiv;
+	}
+
+	snprintf(pllen_name, MAX_NAME_SIZE, "%s_pllen", info->name);
+
+	init.name = pllen_name;
+	init.ops = &davinci_pllen_ops;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+	init.flags = CLK_SET_RATE_PARENT;
+
+	pllen->hw.init = &init;
+	pllen->base = base;
+
+	pllen_clk = clk_register(dev, &pllen->hw);
+	if (IS_ERR(pllen_clk)) {
+		ret = PTR_ERR(pllen_clk);
+		goto err_free_pllen;
+	}
+
+	clk_notifier_register(pllen_clk, &davinci_pllen_notifier);
+
+	return pllout_clk;
+
+err_free_pllen:
+	kfree(pllen);
+err_unregister_postdiv:
+	clk_unregister(postdiv_clk);
+err_unregister_pllout:
+	clk_unregister(pllout_clk);
+err_free_pllout:
+	kfree(pllout);
+err_unregister_prediv:
+	clk_unregister(prediv_clk);
+err_unregister_oscin:
+	clk_unregister(oscin_clk);
+
+	return ERR_PTR(ret);
+}
+
+/**
+ * davinci_pll_auxclk_register - Register bypass clock (AUXCLK)
+ * @dev: The PLL platform device or NULL
+ * @name: The clock name
+ * @base: The PLL memory region
+ */
+struct clk *davinci_pll_auxclk_register(struct device *dev,
+					const char *name,
+					void __iomem *base)
+{
+	return clk_register_gate(dev, name, OSCIN_CLK_NAME, 0, base + CKEN,
+				 CKEN_AUXEN_SHIFT, 0, NULL);
+}
+
+/**
+ * davinci_pll_sysclkbp_clk_register - Register bypass divider clock (SYSCLKBP)
+ * @dev: The PLL platform device or NULL
+ * @name: The clock name
+ * @base: The PLL memory region
+ */
+struct clk *davinci_pll_sysclkbp_clk_register(struct device *dev,
+					      const char *name,
+					      void __iomem *base)
+{
+	return clk_register_divider(dev, name, OSCIN_CLK_NAME, 0, base + BPDIV,
+				    DIV_RATIO_SHIFT, DIV_RATIO_WIDTH,
+				    CLK_DIVIDER_READ_ONLY, NULL);
+}
+
+/**
+ * davinci_pll_obsclk_register - Register oscillator divider clock (OBSCLK)
+ * @dev: The PLL platform device or NULL
+ * @info: The clock info
+ * @base: The PLL memory region
+ */
+struct clk *
+davinci_pll_obsclk_register(struct device *dev,
+			    const struct davinci_pll_obsclk_info *info,
+			    void __iomem *base)
+{
+	struct clk_mux *mux;
+	struct clk_gate *gate;
+	struct clk_divider *divider;
+	struct clk *clk;
+	u32 oscdiv;
+	int ret;
+
+	mux = kzalloc(sizeof(*mux), GFP_KERNEL);
+	if (!mux)
+		return ERR_PTR(-ENOMEM);
+
+	mux->reg = base + OCSEL;
+	mux->table = info->table;
+	mux->mask = info->ocsrc_mask;
+
+	gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+	if (!gate) {
+		ret = -ENOMEM;
+		goto err_free_mux;
+	}
+
+	gate->reg = base + CKEN;
+	gate->bit_idx = CKEN_OBSCLK_SHIFT;
+
+	divider = kzalloc(sizeof(*divider), GFP_KERNEL);
+	if (!divider) {
+		ret = -ENOMEM;
+		goto err_free_gate;
+	}
+
+	divider->reg = base + OSCDIV;
+	divider->shift = DIV_RATIO_SHIFT;
+	divider->width = DIV_RATIO_WIDTH;
+
+	/* make sure divider is enabled just in case bootloader disabled it */
+	oscdiv = readl(base + OSCDIV);
+	oscdiv |= BIT(DIV_ENABLE_SHIFT);
+	writel(oscdiv, base + OSCDIV);
+
+	clk = clk_register_composite(dev, info->name, info->parent_names,
+				     info->num_parents,
+				     &mux->hw, &clk_mux_ops,
+				     &divider->hw, &clk_divider_ops,
+				     &gate->hw, &clk_gate_ops, 0);
+
+	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
+		goto err_free_divider;
+	}
+
+	return clk;
+
+err_free_divider:
+	kfree(divider);
+err_free_gate:
+	kfree(gate);
+err_free_mux:
+	kfree(mux);
+
+	return ERR_PTR(ret);
+}
+
+/* The PLL SYSCLKn clocks have a mechanism for synchronizing rate changes. */
+static int davinci_pll_sysclk_rate_change(struct notifier_block *nb,
+					  unsigned long flags, void *data)
+{
+	struct clk_notifier_data *cnd = data;
+	struct clk_hw *hw = __clk_get_hw(clk_get_parent(cnd->clk));
+	struct davinci_pllen_clk *pll = to_davinci_pllen_clk(hw);
+	u32 pllcmd, pllstat;
+
+	switch (flags) {
+	case POST_RATE_CHANGE:
+		/* apply the changes */
+		pllcmd = readl(pll->base + PLLCMD);
+		pllcmd |= PLLCMD_GOSET;
+		writel(pllcmd, pll->base + PLLCMD);
+		fallthrough;
+	case PRE_RATE_CHANGE:
+		/* Wait until for outstanding changes to take effect */
+		do {
+			pllstat = readl(pll->base + PLLSTAT);
+		} while (pllstat & PLLSTAT_GOSTAT);
+		break;
+	}
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block davinci_pll_sysclk_notifier = {
+	.notifier_call = davinci_pll_sysclk_rate_change,
+};
+
+/**
+ * davinci_pll_sysclk_register - Register divider clocks (SYSCLKn)
+ * @dev: The PLL platform device or NULL
+ * @info: The clock info
+ * @base: The PLL memory region
+ */
+struct clk *
+davinci_pll_sysclk_register(struct device *dev,
+			    const struct davinci_pll_sysclk_info *info,
+			    void __iomem *base)
+{
+	const struct clk_ops *divider_ops = &clk_divider_ops;
+	struct clk_gate *gate;
+	struct clk_divider *divider;
+	struct clk *clk;
+	u32 reg;
+	u32 flags = 0;
+	int ret;
+
+	/* PLLDIVn registers are not entirely consecutive */
+	if (info->id < 4)
+		reg = PLLDIV1 + 4 * (info->id - 1);
+	else
+		reg = PLLDIV4 + 4 * (info->id - 4);
+
+	gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+	if (!gate)
+		return ERR_PTR(-ENOMEM);
+
+	gate->reg = base + reg;
+	gate->bit_idx = DIV_ENABLE_SHIFT;
+
+	divider = kzalloc(sizeof(*divider), GFP_KERNEL);
+	if (!divider) {
+		ret = -ENOMEM;
+		goto err_free_gate;
+	}
+
+	divider->reg = base + reg;
+	divider->shift = DIV_RATIO_SHIFT;
+	divider->width = info->ratio_width;
+	divider->flags = 0;
+
+	if (info->flags & SYSCLK_FIXED_DIV) {
+		divider->flags |= CLK_DIVIDER_READ_ONLY;
+		divider_ops = &clk_divider_ro_ops;
+	}
+
+	/* Only the ARM clock can change the parent PLL rate */
+	if (info->flags & SYSCLK_ARM_RATE)
+		flags |= CLK_SET_RATE_PARENT;
+
+	if (info->flags & SYSCLK_ALWAYS_ENABLED)
+		flags |= CLK_IS_CRITICAL;
+
+	clk = clk_register_composite(dev, info->name, &info->parent_name, 1,
+				     NULL, NULL, &divider->hw, divider_ops,
+				     &gate->hw, &clk_gate_ops, flags);
+	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
+		goto err_free_divider;
+	}
+
+	clk_notifier_register(clk, &davinci_pll_sysclk_notifier);
+
+	return clk;
+
+err_free_divider:
+	kfree(divider);
+err_free_gate:
+	kfree(gate);
+
+	return ERR_PTR(ret);
+}
+
+int of_davinci_pll_init(struct device *dev, struct device_node *node,
+			const struct davinci_pll_clk_info *info,
+			const struct davinci_pll_obsclk_info *obsclk_info,
+			const struct davinci_pll_sysclk_info **div_info,
+			u8 max_sysclk_id,
+			void __iomem *base,
+			struct regmap *cfgchip)
+{
+	struct device_node *child;
+	const char *parent_name;
+	struct clk *clk;
+
+	if (info->flags & PLL_HAS_CLKMODE)
+		parent_name = of_clk_get_parent_name(node, 0);
+	else
+		parent_name = OSCIN_CLK_NAME;
+
+	clk = davinci_pll_clk_register(dev, info, parent_name, base, cfgchip);
+	if (IS_ERR(clk)) {
+		dev_err(dev, "failed to register %s\n", info->name);
+		return PTR_ERR(clk);
+	}
+
+	child = of_get_child_by_name(node, "pllout");
+	if (of_device_is_available(child))
+		of_clk_add_provider(child, of_clk_src_simple_get, clk);
+	of_node_put(child);
+
+	child = of_get_child_by_name(node, "sysclk");
+	if (of_device_is_available(child)) {
+		struct clk_onecell_data *clk_data;
+		struct clk **clks;
+		int n_clks =  max_sysclk_id + 1;
+		int i;
+
+		clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
+		if (!clk_data) {
+			of_node_put(child);
+			return -ENOMEM;
+		}
+
+		clks = kmalloc_array(n_clks, sizeof(*clks), GFP_KERNEL);
+		if (!clks) {
+			kfree(clk_data);
+			of_node_put(child);
+			return -ENOMEM;
+		}
+
+		clk_data->clks = clks;
+		clk_data->clk_num = n_clks;
+
+		for (i = 0; i < n_clks; i++)
+			clks[i] = ERR_PTR(-ENOENT);
+
+		for (; *div_info; div_info++) {
+			clk = davinci_pll_sysclk_register(dev, *div_info, base);
+			if (IS_ERR(clk))
+				dev_warn(dev, "failed to register %s (%ld)\n",
+					 (*div_info)->name, PTR_ERR(clk));
+			else
+				clks[(*div_info)->id] = clk;
+		}
+		of_clk_add_provider(child, of_clk_src_onecell_get, clk_data);
+	}
+	of_node_put(child);
+
+	child = of_get_child_by_name(node, "auxclk");
+	if (of_device_is_available(child)) {
+		char child_name[MAX_NAME_SIZE];
+
+		snprintf(child_name, MAX_NAME_SIZE, "%s_auxclk", info->name);
+
+		clk = davinci_pll_auxclk_register(dev, child_name, base);
+		if (IS_ERR(clk))
+			dev_warn(dev, "failed to register %s (%ld)\n",
+				 child_name, PTR_ERR(clk));
+		else
+			of_clk_add_provider(child, of_clk_src_simple_get, clk);
+	}
+	of_node_put(child);
+
+	child = of_get_child_by_name(node, "obsclk");
+	if (of_device_is_available(child)) {
+		if (obsclk_info)
+			clk = davinci_pll_obsclk_register(dev, obsclk_info, base);
+		else
+			clk = ERR_PTR(-EINVAL);
+
+		if (IS_ERR(clk))
+			dev_warn(dev, "failed to register obsclk (%ld)\n",
+				 PTR_ERR(clk));
+		else
+			of_clk_add_provider(child, of_clk_src_simple_get, clk);
+	}
+	of_node_put(child);
+
+	return 0;
+}
+
+static struct davinci_pll_platform_data *davinci_pll_get_pdata(struct device *dev)
+{
+	struct davinci_pll_platform_data *pdata = dev_get_platdata(dev);
+
+	/*
+	 * Platform data is optional, so allocate a new struct if one was not
+	 * provided. For device tree, this will always be the case.
+	 */
+	if (!pdata)
+		pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return NULL;
+
+	/* for device tree, we need to fill in the struct */
+	if (dev->of_node)
+		pdata->cfgchip =
+			syscon_regmap_lookup_by_compatible("ti,da830-cfgchip");
+
+	return pdata;
+}
+
+/* needed in early boot for clocksource/clockevent */
+#ifdef CONFIG_ARCH_DAVINCI_DA850
+CLK_OF_DECLARE(da850_pll0, "ti,da850-pll0", of_da850_pll0_init);
+#endif
+
+static const struct of_device_id davinci_pll_of_match[] = {
+#ifdef CONFIG_ARCH_DAVINCI_DA850
+	{ .compatible = "ti,da850-pll1", .data = of_da850_pll1_init },
+#endif
+	{ }
+};
+
+static const struct platform_device_id davinci_pll_id_table[] = {
+#ifdef CONFIG_ARCH_DAVINCI_DA830
+	{ .name = "da830-pll",   .driver_data = (kernel_ulong_t)da830_pll_init   },
+#endif
+#ifdef CONFIG_ARCH_DAVINCI_DA850
+	{ .name = "da850-pll0",  .driver_data = (kernel_ulong_t)da850_pll0_init  },
+	{ .name = "da850-pll1",  .driver_data = (kernel_ulong_t)da850_pll1_init  },
+#endif
+	{ }
+};
+
+typedef int (*davinci_pll_init)(struct device *dev, void __iomem *base,
+				struct regmap *cfgchip);
+
+static int davinci_pll_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct davinci_pll_platform_data *pdata;
+	const struct of_device_id *of_id;
+	davinci_pll_init pll_init = NULL;
+	void __iomem *base;
+
+	of_id = of_match_device(davinci_pll_of_match, dev);
+	if (of_id)
+		pll_init = of_id->data;
+	else if (pdev->id_entry)
+		pll_init = (void *)pdev->id_entry->driver_data;
+
+	if (!pll_init) {
+		dev_err(dev, "unable to find driver data\n");
+		return -EINVAL;
+	}
+
+	pdata = davinci_pll_get_pdata(dev);
+	if (!pdata) {
+		dev_err(dev, "missing platform data\n");
+		return -EINVAL;
+	}
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	return pll_init(dev, base, pdata->cfgchip);
+}
+
+static struct platform_driver davinci_pll_driver = {
+	.probe		= davinci_pll_probe,
+	.driver		= {
+		.name		= "davinci-pll-clk",
+		.of_match_table	= davinci_pll_of_match,
+	},
+	.id_table	= davinci_pll_id_table,
+};
+
+static int __init davinci_pll_driver_init(void)
+{
+	return platform_driver_register(&davinci_pll_driver);
+}
+
+/* has to be postcore_initcall because PSC devices depend on PLL parent clocks */
+postcore_initcall(davinci_pll_driver_init);
+
+#ifdef CONFIG_DEBUG_FS
+#include <linux/debugfs.h>
+
+#define DEBUG_REG(n)	\
+{			\
+	.name	= #n,	\
+	.offset	= n,	\
+}
+
+static const struct debugfs_reg32 davinci_pll_regs[] = {
+	DEBUG_REG(REVID),
+	DEBUG_REG(PLLCTL),
+	DEBUG_REG(OCSEL),
+	DEBUG_REG(PLLSECCTL),
+	DEBUG_REG(PLLM),
+	DEBUG_REG(PREDIV),
+	DEBUG_REG(PLLDIV1),
+	DEBUG_REG(PLLDIV2),
+	DEBUG_REG(PLLDIV3),
+	DEBUG_REG(OSCDIV),
+	DEBUG_REG(POSTDIV),
+	DEBUG_REG(BPDIV),
+	DEBUG_REG(PLLCMD),
+	DEBUG_REG(PLLSTAT),
+	DEBUG_REG(ALNCTL),
+	DEBUG_REG(DCHANGE),
+	DEBUG_REG(CKEN),
+	DEBUG_REG(CKSTAT),
+	DEBUG_REG(SYSTAT),
+	DEBUG_REG(PLLDIV4),
+	DEBUG_REG(PLLDIV5),
+	DEBUG_REG(PLLDIV6),
+	DEBUG_REG(PLLDIV7),
+	DEBUG_REG(PLLDIV8),
+	DEBUG_REG(PLLDIV9),
+};
+
+static void davinci_pll_debug_init(struct clk_hw *hw, struct dentry *dentry)
+{
+	struct davinci_pll_clk *pll = to_davinci_pll_clk(hw);
+	struct debugfs_regset32 *regset;
+
+	regset = kzalloc(sizeof(*regset), GFP_KERNEL);
+	if (!regset)
+		return;
+
+	regset->regs = davinci_pll_regs;
+	regset->nregs = ARRAY_SIZE(davinci_pll_regs);
+	regset->base = pll->base;
+
+	debugfs_create_regset32("registers", 0400, dentry, regset);
+}
+#endif
diff --git a/drivers/clk/davinci/pll.h b/drivers/clk/davinci/pll.h
new file mode 100644
index 0000000000..20bfcec2d3
--- /dev/null
+++ b/drivers/clk/davinci/pll.h
@@ -0,0 +1,129 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Clock driver for TI Davinci PSC controllers
+ *
+ * Copyright (C) 2018 David Lechner <david@lechnology.com>
+ */
+
+#ifndef __CLK_DAVINCI_PLL_H___
+#define __CLK_DAVINCI_PLL_H___
+
+#include <linux/bitops.h>
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/types.h>
+
+#define PLL_HAS_CLKMODE			BIT(0) /* PLL has PLLCTL[CLKMODE] */
+#define PLL_HAS_PREDIV			BIT(1) /* has prediv before PLL */
+#define PLL_PREDIV_ALWAYS_ENABLED	BIT(2) /* don't clear DEN bit */
+#define PLL_PREDIV_FIXED_DIV		BIT(3) /* fixed divider value */
+#define PLL_HAS_POSTDIV			BIT(4) /* has postdiv after PLL */
+#define PLL_POSTDIV_ALWAYS_ENABLED	BIT(5) /* don't clear DEN bit */
+#define PLL_POSTDIV_FIXED_DIV		BIT(6) /* fixed divider value */
+#define PLL_HAS_EXTCLKSRC		BIT(7) /* has selectable bypass */
+#define PLL_PLLM_2X			BIT(8) /* PLLM value is 2x (DM365) */
+#define PLL_PREDIV_FIXED8		BIT(9) /* DM355 quirk */
+
+/** davinci_pll_clk_info - controller-specific PLL info
+ * @name: The name of the PLL
+ * @unlock_reg: Option CFGCHIP register for unlocking PLL
+ * @unlock_mask: Bitmask used with @unlock_reg
+ * @pllm_mask: Bitmask for PLLM[PLLM] value
+ * @pllm_min: Minimum allowable value for PLLM[PLLM]
+ * @pllm_max: Maximum allowable value for PLLM[PLLM]
+ * @pllout_min_rate: Minimum allowable rate for PLLOUT
+ * @pllout_max_rate: Maximum allowable rate for PLLOUT
+ * @flags: Bitmap of PLL_* flags.
+ */
+struct davinci_pll_clk_info {
+	const char *name;
+	u32 unlock_reg;
+	u32 unlock_mask;
+	u32 pllm_mask;
+	u32 pllm_min;
+	u32 pllm_max;
+	unsigned long pllout_min_rate;
+	unsigned long pllout_max_rate;
+	u32 flags;
+};
+
+#define SYSCLK_ARM_RATE		BIT(0) /* Controls ARM rate */
+#define SYSCLK_ALWAYS_ENABLED	BIT(1) /* Or bad things happen */
+#define SYSCLK_FIXED_DIV	BIT(2) /* Fixed divider */
+
+/** davinci_pll_sysclk_info - SYSCLKn-specific info
+ * @name: The name of the clock
+ * @parent_name: The name of the parent clock
+ * @id: "n" in "SYSCLKn"
+ * @ratio_width: Width (in bits) of RATIO in PLLDIVn register
+ * @flags: Bitmap of SYSCLK_* flags.
+ */
+struct davinci_pll_sysclk_info {
+	const char *name;
+	const char *parent_name;
+	u32 id;
+	u32 ratio_width;
+	u32 flags;
+};
+
+#define SYSCLK(i, n, p, w, f)				\
+static const struct davinci_pll_sysclk_info n = {	\
+	.name		= #n,				\
+	.parent_name	= #p,				\
+	.id		= (i),				\
+	.ratio_width	= (w),				\
+	.flags		= (f),				\
+}
+
+/** davinci_pll_obsclk_info - OBSCLK-specific info
+ * @name: The name of the clock
+ * @parent_names: Array of names of the parent clocks
+ * @num_parents: Length of @parent_names
+ * @table: Array of values to write to OCSEL[OCSRC] cooresponding to
+ *         @parent_names
+ * @ocsrc_mask: Bitmask for OCSEL[OCSRC]
+ */
+struct davinci_pll_obsclk_info {
+	const char *name;
+	const char * const *parent_names;
+	u8 num_parents;
+	u32 *table;
+	u32 ocsrc_mask;
+};
+
+struct clk *davinci_pll_clk_register(struct device *dev,
+				     const struct davinci_pll_clk_info *info,
+				     const char *parent_name,
+				     void __iomem *base,
+				     struct regmap *cfgchip);
+struct clk *davinci_pll_auxclk_register(struct device *dev,
+					const char *name,
+					void __iomem *base);
+struct clk *davinci_pll_sysclkbp_clk_register(struct device *dev,
+					      const char *name,
+					      void __iomem *base);
+struct clk *
+davinci_pll_obsclk_register(struct device *dev,
+			    const struct davinci_pll_obsclk_info *info,
+			    void __iomem *base);
+struct clk *
+davinci_pll_sysclk_register(struct device *dev,
+			    const struct davinci_pll_sysclk_info *info,
+			    void __iomem *base);
+
+int of_davinci_pll_init(struct device *dev, struct device_node *node,
+			const struct davinci_pll_clk_info *info,
+			const struct davinci_pll_obsclk_info *obsclk_info,
+			const struct davinci_pll_sysclk_info **div_info,
+			u8 max_sysclk_id,
+			void __iomem *base,
+			struct regmap *cfgchip);
+
+/* Platform-specific callbacks */
+
+int da850_pll1_init(struct device *dev, void __iomem *base, struct regmap *cfgchip);
+void of_da850_pll0_init(struct device_node *node);
+int of_da850_pll1_init(struct device *dev, void __iomem *base, struct regmap *cfgchip);
+
+#endif /* __CLK_DAVINCI_PLL_H___ */
diff --git a/drivers/clk/davinci/psc-da830.c b/drivers/clk/davinci/psc-da830.c
new file mode 100644
index 0000000000..6481337382
--- /dev/null
+++ b/drivers/clk/davinci/psc-da830.c
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PSC clock descriptions for TI DA830/OMAP-L137/AM17XX
+ *
+ * Copyright (C) 2018 David Lechner <david@lechnology.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+
+#include "psc.h"
+
+LPSC_CLKDEV1(aemif_clkdev,	NULL,	"ti-aemif");
+LPSC_CLKDEV1(spi0_clkdev,	NULL,	"spi_davinci.0");
+LPSC_CLKDEV1(mmcsd_clkdev,	NULL,	"da830-mmc.0");
+LPSC_CLKDEV1(uart0_clkdev,	NULL,	"serial8250.0");
+
+static const struct davinci_lpsc_clk_info da830_psc0_info[] = {
+	LPSC(0,  0, tpcc,     pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
+	LPSC(1,  0, tptc0,    pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
+	LPSC(2,  0, tptc1,    pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
+	LPSC(3,  0, aemif,    pll0_sysclk3, aemif_clkdev, LPSC_ALWAYS_ENABLED),
+	LPSC(4,  0, spi0,     pll0_sysclk2, spi0_clkdev,  0),
+	LPSC(5,  0, mmcsd,    pll0_sysclk2, mmcsd_clkdev, 0),
+	LPSC(6,  0, aintc,    pll0_sysclk4, NULL,         LPSC_ALWAYS_ENABLED),
+	LPSC(7,  0, arm_rom,  pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
+	LPSC(8,  0, secu_mgr, pll0_sysclk4, NULL,         LPSC_ALWAYS_ENABLED),
+	LPSC(9,  0, uart0,    pll0_sysclk2, uart0_clkdev, 0),
+	LPSC(10, 0, scr0_ss,  pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
+	LPSC(11, 0, scr1_ss,  pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
+	LPSC(12, 0, scr2_ss,  pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
+	LPSC(13, 0, pruss,    pll0_sysclk2, NULL,         LPSC_ALWAYS_ENABLED),
+	LPSC(14, 0, arm,      pll0_sysclk6, NULL,         LPSC_ALWAYS_ENABLED),
+	{ }
+};
+
+static int da830_psc0_init(struct device *dev, void __iomem *base)
+{
+	return davinci_psc_register_clocks(dev, da830_psc0_info, 16, base);
+}
+
+static struct clk_bulk_data da830_psc0_parent_clks[] = {
+	{ .id = "pll0_sysclk2" },
+	{ .id = "pll0_sysclk3" },
+	{ .id = "pll0_sysclk4" },
+	{ .id = "pll0_sysclk6" },
+};
+
+const struct davinci_psc_init_data da830_psc0_init_data = {
+	.parent_clks		= da830_psc0_parent_clks,
+	.num_parent_clks	= ARRAY_SIZE(da830_psc0_parent_clks),
+	.psc_init		= &da830_psc0_init,
+};
+
+LPSC_CLKDEV3(usb0_clkdev,	"fck",	"da830-usb-phy-clks",
+				NULL,	"musb-da8xx",
+				NULL,	"cppi41-dmaengine");
+LPSC_CLKDEV1(usb1_clkdev,	NULL,	"ohci-da8xx");
+/* REVISIT: gpio-davinci.c should be modified to drop con_id */
+LPSC_CLKDEV1(gpio_clkdev,	"gpio",	NULL);
+LPSC_CLKDEV2(emac_clkdev,	NULL,	"davinci_emac.1",
+				"fck",	"davinci_mdio.0");
+LPSC_CLKDEV1(mcasp0_clkdev,	NULL,	"davinci-mcasp.0");
+LPSC_CLKDEV1(mcasp1_clkdev,	NULL,	"davinci-mcasp.1");
+LPSC_CLKDEV1(mcasp2_clkdev,	NULL,	"davinci-mcasp.2");
+LPSC_CLKDEV1(spi1_clkdev,	NULL,	"spi_davinci.1");
+LPSC_CLKDEV1(i2c1_clkdev,	NULL,	"i2c_davinci.2");
+LPSC_CLKDEV1(uart1_clkdev,	NULL,	"serial8250.1");
+LPSC_CLKDEV1(uart2_clkdev,	NULL,	"serial8250.2");
+LPSC_CLKDEV1(lcdc_clkdev,	"fck",	"da8xx_lcdc.0");
+LPSC_CLKDEV2(pwm_clkdev,	"fck",	"ehrpwm.0",
+				"fck",	"ehrpwm.1");
+LPSC_CLKDEV3(ecap_clkdev,	"fck",	"ecap.0",
+				"fck",	"ecap.1",
+				"fck",	"ecap.2");
+LPSC_CLKDEV2(eqep_clkdev,	NULL,	"eqep.0",
+				NULL,	"eqep.1");
+
+static const struct davinci_lpsc_clk_info da830_psc1_info[] = {
+	LPSC(1,  0, usb0,   pll0_sysclk2, usb0_clkdev,   0),
+	LPSC(2,  0, usb1,   pll0_sysclk4, usb1_clkdev,   0),
+	LPSC(3,  0, gpio,   pll0_sysclk4, gpio_clkdev,   0),
+	LPSC(5,  0, emac,   pll0_sysclk4, emac_clkdev,   0),
+	LPSC(6,  0, emif3,  pll0_sysclk5, NULL,          LPSC_ALWAYS_ENABLED),
+	LPSC(7,  0, mcasp0, pll0_sysclk2, mcasp0_clkdev, 0),
+	LPSC(8,  0, mcasp1, pll0_sysclk2, mcasp1_clkdev, 0),
+	LPSC(9,  0, mcasp2, pll0_sysclk2, mcasp2_clkdev, 0),
+	LPSC(10, 0, spi1,   pll0_sysclk2, spi1_clkdev,   0),
+	LPSC(11, 0, i2c1,   pll0_sysclk4, i2c1_clkdev,   0),
+	LPSC(12, 0, uart1,  pll0_sysclk2, uart1_clkdev,  0),
+	LPSC(13, 0, uart2,  pll0_sysclk2, uart2_clkdev,  0),
+	LPSC(16, 0, lcdc,   pll0_sysclk2, lcdc_clkdev,   0),
+	LPSC(17, 0, pwm,    pll0_sysclk2, pwm_clkdev,    0),
+	LPSC(20, 0, ecap,   pll0_sysclk2, ecap_clkdev,   0),
+	LPSC(21, 0, eqep,   pll0_sysclk2, eqep_clkdev,   0),
+	{ }
+};
+
+static int da830_psc1_init(struct device *dev, void __iomem *base)
+{
+	return davinci_psc_register_clocks(dev, da830_psc1_info, 32, base);
+}
+
+static struct clk_bulk_data da830_psc1_parent_clks[] = {
+	{ .id = "pll0_sysclk2" },
+	{ .id = "pll0_sysclk4" },
+	{ .id = "pll0_sysclk5" },
+};
+
+const struct davinci_psc_init_data da830_psc1_init_data = {
+	.parent_clks		= da830_psc1_parent_clks,
+	.num_parent_clks	= ARRAY_SIZE(da830_psc1_parent_clks),
+	.psc_init		= &da830_psc1_init,
+};
diff --git a/drivers/clk/davinci/psc-da850.c b/drivers/clk/davinci/psc-da850.c
new file mode 100644
index 0000000000..5a18bca464
--- /dev/null
+++ b/drivers/clk/davinci/psc-da850.c
@@ -0,0 +1,155 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PSC clock descriptions for TI DA850/OMAP-L138/AM18XX
+ *
+ * Copyright (C) 2018 David Lechner <david@lechnology.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/reset-controller.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/types.h>
+
+#include "psc.h"
+
+LPSC_CLKDEV1(emifa_clkdev,	NULL,		"ti-aemif");
+LPSC_CLKDEV1(spi0_clkdev,	NULL,		"spi_davinci.0");
+LPSC_CLKDEV1(mmcsd0_clkdev,	NULL,		"da830-mmc.0");
+LPSC_CLKDEV1(uart0_clkdev,	NULL,		"serial8250.0");
+/* REVISIT: used dev_id instead of con_id */
+LPSC_CLKDEV1(arm_clkdev,	"arm",		NULL);
+LPSC_CLKDEV1(dsp_clkdev,	NULL,		"davinci-rproc.0");
+
+static const struct davinci_lpsc_clk_info da850_psc0_info[] = {
+	LPSC(0,  0, tpcc0,   pll0_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
+	LPSC(1,  0, tptc0,   pll0_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
+	LPSC(2,  0, tptc1,   pll0_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
+	LPSC(3,  0, emifa,   async1,       emifa_clkdev,  0),
+	LPSC(4,  0, spi0,    pll0_sysclk2, spi0_clkdev,   0),
+	LPSC(5,  0, mmcsd0,  pll0_sysclk2, mmcsd0_clkdev, 0),
+	LPSC(6,  0, aintc,   pll0_sysclk4, NULL,          LPSC_ALWAYS_ENABLED),
+	LPSC(7,  0, arm_rom, pll0_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
+	LPSC(9,  0, uart0,   pll0_sysclk2, uart0_clkdev,  0),
+	LPSC(13, 0, pruss,   pll0_sysclk2, NULL,          0),
+	LPSC(14, 0, arm,     pll0_sysclk6, arm_clkdev,    LPSC_ALWAYS_ENABLED | LPSC_SET_RATE_PARENT),
+	LPSC(15, 1, dsp,     pll0_sysclk1, dsp_clkdev,    LPSC_FORCE | LPSC_LOCAL_RESET),
+	{ }
+};
+
+LPSC_CLKDEV3(usb0_clkdev,	"fck",	"da830-usb-phy-clks",
+				NULL,	"musb-da8xx",
+				NULL,	"cppi41-dmaengine");
+LPSC_CLKDEV1(usb1_clkdev,	NULL,	"ohci-da8xx");
+/* REVISIT: gpio-davinci.c should be modified to drop con_id */
+LPSC_CLKDEV1(gpio_clkdev,	"gpio",	NULL);
+LPSC_CLKDEV2(emac_clkdev,	NULL,	"davinci_emac.1",
+				"fck",	"davinci_mdio.0");
+LPSC_CLKDEV1(mcasp0_clkdev,	NULL,	"davinci-mcasp.0");
+LPSC_CLKDEV1(sata_clkdev,	"fck",	"ahci_da850");
+LPSC_CLKDEV1(vpif_clkdev,	NULL,	"vpif");
+LPSC_CLKDEV1(spi1_clkdev,	NULL,	"spi_davinci.1");
+LPSC_CLKDEV1(i2c1_clkdev,	NULL,	"i2c_davinci.2");
+LPSC_CLKDEV1(uart1_clkdev,	NULL,	"serial8250.1");
+LPSC_CLKDEV1(uart2_clkdev,	NULL,	"serial8250.2");
+LPSC_CLKDEV1(mcbsp0_clkdev,	NULL,	"davinci-mcbsp.0");
+LPSC_CLKDEV1(mcbsp1_clkdev,	NULL,	"davinci-mcbsp.1");
+LPSC_CLKDEV1(lcdc_clkdev,	"fck",	"da8xx_lcdc.0");
+LPSC_CLKDEV3(ehrpwm_clkdev,	"fck",	"ehrpwm.0",
+				"fck",	"ehrpwm.1",
+				NULL,	"da830-tbclksync");
+LPSC_CLKDEV1(mmcsd1_clkdev,	NULL,	"da830-mmc.1");
+LPSC_CLKDEV3(ecap_clkdev,	"fck",	"ecap.0",
+				"fck",	"ecap.1",
+				"fck",	"ecap.2");
+
+static struct reset_control_lookup da850_psc0_reset_lookup_table[] = {
+	RESET_LOOKUP("da850-psc0", 15, "davinci-rproc.0", NULL),
+};
+
+static int da850_psc0_init(struct device *dev, void __iomem *base)
+{
+	reset_controller_add_lookup(da850_psc0_reset_lookup_table,
+				    ARRAY_SIZE(da850_psc0_reset_lookup_table));
+	return davinci_psc_register_clocks(dev, da850_psc0_info, 16, base);
+}
+
+static int of_da850_psc0_init(struct device *dev, void __iomem *base)
+{
+	return of_davinci_psc_clk_init(dev, da850_psc0_info, 16, base);
+}
+
+static struct clk_bulk_data da850_psc0_parent_clks[] = {
+	{ .id = "pll0_sysclk1" },
+	{ .id = "pll0_sysclk2" },
+	{ .id = "pll0_sysclk4" },
+	{ .id = "pll0_sysclk6" },
+	{ .id = "async1"       },
+};
+
+const struct davinci_psc_init_data da850_psc0_init_data = {
+	.parent_clks		= da850_psc0_parent_clks,
+	.num_parent_clks	= ARRAY_SIZE(da850_psc0_parent_clks),
+	.psc_init		= &da850_psc0_init,
+};
+
+const struct davinci_psc_init_data of_da850_psc0_init_data = {
+	.parent_clks		= da850_psc0_parent_clks,
+	.num_parent_clks	= ARRAY_SIZE(da850_psc0_parent_clks),
+	.psc_init		= &of_da850_psc0_init,
+};
+
+static const struct davinci_lpsc_clk_info da850_psc1_info[] = {
+	LPSC(0,  0, tpcc1,  pll0_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
+	LPSC(1,  0, usb0,   pll0_sysclk2, usb0_clkdev,   0),
+	LPSC(2,  0, usb1,   pll0_sysclk4, usb1_clkdev,   0),
+	LPSC(3,  0, gpio,   pll0_sysclk4, gpio_clkdev,   0),
+	LPSC(5,  0, emac,   pll0_sysclk4, emac_clkdev,   0),
+	LPSC(6,  0, ddr,    pll0_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
+	LPSC(7,  0, mcasp0, async3,       mcasp0_clkdev, 0),
+	LPSC(8,  0, sata,   pll0_sysclk2, sata_clkdev,   LPSC_FORCE),
+	LPSC(9,  0, vpif,   pll0_sysclk2, vpif_clkdev,   0),
+	LPSC(10, 0, spi1,   async3,       spi1_clkdev,   0),
+	LPSC(11, 0, i2c1,   pll0_sysclk4, i2c1_clkdev,   0),
+	LPSC(12, 0, uart1,  async3,       uart1_clkdev,  0),
+	LPSC(13, 0, uart2,  async3,       uart2_clkdev,  0),
+	LPSC(14, 0, mcbsp0, async3,       mcbsp0_clkdev, 0),
+	LPSC(15, 0, mcbsp1, async3,       mcbsp1_clkdev, 0),
+	LPSC(16, 0, lcdc,   pll0_sysclk2, lcdc_clkdev,   0),
+	LPSC(17, 0, ehrpwm, async3,       ehrpwm_clkdev, 0),
+	LPSC(18, 0, mmcsd1, pll0_sysclk2, mmcsd1_clkdev, 0),
+	LPSC(20, 0, ecap,   async3,       ecap_clkdev,   0),
+	LPSC(21, 0, tptc2,  pll0_sysclk2, NULL,          LPSC_ALWAYS_ENABLED),
+	{ }
+};
+
+static int da850_psc1_init(struct device *dev, void __iomem *base)
+{
+	return davinci_psc_register_clocks(dev, da850_psc1_info, 32, base);
+}
+
+static int of_da850_psc1_init(struct device *dev, void __iomem *base)
+{
+	return of_davinci_psc_clk_init(dev, da850_psc1_info, 32, base);
+}
+
+static struct clk_bulk_data da850_psc1_parent_clks[] = {
+	{ .id = "pll0_sysclk2" },
+	{ .id = "pll0_sysclk4" },
+	{ .id = "async3"       },
+};
+
+const struct davinci_psc_init_data da850_psc1_init_data = {
+	.parent_clks		= da850_psc1_parent_clks,
+	.num_parent_clks	= ARRAY_SIZE(da850_psc1_parent_clks),
+	.psc_init		= &da850_psc1_init,
+};
+
+const struct davinci_psc_init_data of_da850_psc1_init_data = {
+	.parent_clks		= da850_psc1_parent_clks,
+	.num_parent_clks	= ARRAY_SIZE(da850_psc1_parent_clks),
+	.psc_init		= &of_da850_psc1_init,
+};
diff --git a/drivers/clk/davinci/psc.c b/drivers/clk/davinci/psc.c
new file mode 100644
index 0000000000..cd85d9f158
--- /dev/null
+++ b/drivers/clk/davinci/psc.c
@@ -0,0 +1,563 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Clock driver for TI Davinci PSC controllers
+ *
+ * Copyright (C) 2017 David Lechner <david@lechnology.com>
+ *
+ * Based on: drivers/clk/keystone/gate.c
+ * Copyright (C) 2013 Texas Instruments.
+ *	Murali Karicheri <m-karicheri2@ti.com>
+ *	Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * And: arch/arm/mach-davinci/psc.c
+ * Copyright (C) 2006 Texas Instruments.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/clk/davinci.h>
+#include <linux/clkdev.h>
+#include <linux/err.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_clock.h>
+#include <linux/pm_domain.h>
+#include <linux/regmap.h>
+#include <linux/reset-controller.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "psc.h"
+
+/* PSC register offsets */
+#define EPCPR			0x070
+#define PTCMD			0x120
+#define PTSTAT			0x128
+#define PDSTAT(n)		(0x200 + 4 * (n))
+#define PDCTL(n)		(0x300 + 4 * (n))
+#define MDSTAT(n)		(0x800 + 4 * (n))
+#define MDCTL(n)		(0xa00 + 4 * (n))
+
+/* PSC module states */
+enum davinci_lpsc_state {
+	LPSC_STATE_SWRSTDISABLE	= 0,
+	LPSC_STATE_SYNCRST	= 1,
+	LPSC_STATE_DISABLE	= 2,
+	LPSC_STATE_ENABLE	= 3,
+};
+
+#define MDSTAT_STATE_MASK	GENMASK(5, 0)
+#define MDSTAT_MCKOUT		BIT(12)
+#define PDSTAT_STATE_MASK	GENMASK(4, 0)
+#define MDCTL_FORCE		BIT(31)
+#define MDCTL_LRESET		BIT(8)
+#define PDCTL_EPCGOOD		BIT(8)
+#define PDCTL_NEXT		BIT(0)
+
+struct davinci_psc_data {
+	struct clk_onecell_data clk_data;
+	struct genpd_onecell_data pm_data;
+	struct reset_controller_dev rcdev;
+};
+
+/**
+ * struct davinci_lpsc_clk - LPSC clock structure
+ * @dev: the device that provides this LPSC or NULL
+ * @hw: clk_hw for the LPSC
+ * @pm_domain: power domain for the LPSC
+ * @genpd_clk: clock reference owned by @pm_domain
+ * @regmap: PSC MMIO region
+ * @md: Module domain (LPSC module id)
+ * @pd: Power domain
+ * @flags: LPSC_* quirk flags
+ */
+struct davinci_lpsc_clk {
+	struct device *dev;
+	struct clk_hw hw;
+	struct generic_pm_domain pm_domain;
+	struct clk *genpd_clk;
+	struct regmap *regmap;
+	u32 md;
+	u32 pd;
+	u32 flags;
+};
+
+#define to_davinci_psc_data(x) container_of(x, struct davinci_psc_data, x)
+#define to_davinci_lpsc_clk(x) container_of(x, struct davinci_lpsc_clk, x)
+
+/**
+ * best_dev_name - get the "best" device name.
+ * @dev: the device
+ *
+ * Returns the device tree compatible name if the device has a DT node,
+ * otherwise return the device name. This is mainly needed because clkdev
+ * lookups are limited to 20 chars for dev_id and when using device tree,
+ * dev_name(dev) is much longer than that.
+ */
+static inline const char *best_dev_name(struct device *dev)
+{
+	const char *compatible;
+
+	if (!of_property_read_string(dev->of_node, "compatible", &compatible))
+		return compatible;
+
+	return dev_name(dev);
+}
+
+static void davinci_lpsc_config(struct davinci_lpsc_clk *lpsc,
+				enum davinci_lpsc_state next_state)
+{
+	u32 epcpr, pdstat, mdstat, ptstat;
+
+	regmap_write_bits(lpsc->regmap, MDCTL(lpsc->md), MDSTAT_STATE_MASK,
+			  next_state);
+
+	if (lpsc->flags & LPSC_FORCE)
+		regmap_write_bits(lpsc->regmap, MDCTL(lpsc->md), MDCTL_FORCE,
+				  MDCTL_FORCE);
+
+	regmap_read(lpsc->regmap, PDSTAT(lpsc->pd), &pdstat);
+	if ((pdstat & PDSTAT_STATE_MASK) == 0) {
+		regmap_write_bits(lpsc->regmap, PDCTL(lpsc->pd), PDCTL_NEXT,
+				  PDCTL_NEXT);
+
+		regmap_write(lpsc->regmap, PTCMD, BIT(lpsc->pd));
+
+		regmap_read_poll_timeout(lpsc->regmap, EPCPR, epcpr,
+					 epcpr & BIT(lpsc->pd), 0, 0);
+
+		regmap_write_bits(lpsc->regmap, PDCTL(lpsc->pd), PDCTL_EPCGOOD,
+				  PDCTL_EPCGOOD);
+	} else {
+		regmap_write(lpsc->regmap, PTCMD, BIT(lpsc->pd));
+	}
+
+	regmap_read_poll_timeout(lpsc->regmap, PTSTAT, ptstat,
+				 !(ptstat & BIT(lpsc->pd)), 0, 0);
+
+	regmap_read_poll_timeout(lpsc->regmap, MDSTAT(lpsc->md), mdstat,
+				 (mdstat & MDSTAT_STATE_MASK) == next_state,
+				 0, 0);
+}
+
+static int davinci_lpsc_clk_enable(struct clk_hw *hw)
+{
+	struct davinci_lpsc_clk *lpsc = to_davinci_lpsc_clk(hw);
+
+	davinci_lpsc_config(lpsc, LPSC_STATE_ENABLE);
+
+	return 0;
+}
+
+static void davinci_lpsc_clk_disable(struct clk_hw *hw)
+{
+	struct davinci_lpsc_clk *lpsc = to_davinci_lpsc_clk(hw);
+
+	davinci_lpsc_config(lpsc, LPSC_STATE_DISABLE);
+}
+
+static int davinci_lpsc_clk_is_enabled(struct clk_hw *hw)
+{
+	struct davinci_lpsc_clk *lpsc = to_davinci_lpsc_clk(hw);
+	u32 mdstat;
+
+	regmap_read(lpsc->regmap, MDSTAT(lpsc->md), &mdstat);
+
+	return (mdstat & MDSTAT_MCKOUT) ? 1 : 0;
+}
+
+static const struct clk_ops davinci_lpsc_clk_ops = {
+	.enable		= davinci_lpsc_clk_enable,
+	.disable	= davinci_lpsc_clk_disable,
+	.is_enabled	= davinci_lpsc_clk_is_enabled,
+};
+
+static int davinci_psc_genpd_attach_dev(struct generic_pm_domain *pm_domain,
+					struct device *dev)
+{
+	struct davinci_lpsc_clk *lpsc = to_davinci_lpsc_clk(pm_domain);
+	struct clk *clk;
+	int ret;
+
+	/*
+	 * pm_clk_remove_clk() will call clk_put(), so we have to use clk_get()
+	 * to get the clock instead of using lpsc->hw.clk directly.
+	 */
+	clk = clk_get_sys(best_dev_name(lpsc->dev), clk_hw_get_name(&lpsc->hw));
+	if (IS_ERR(clk))
+		return (PTR_ERR(clk));
+
+	ret = pm_clk_create(dev);
+	if (ret < 0)
+		goto fail_clk_put;
+
+	ret = pm_clk_add_clk(dev, clk);
+	if (ret < 0)
+		goto fail_pm_clk_destroy;
+
+	lpsc->genpd_clk = clk;
+
+	return 0;
+
+fail_pm_clk_destroy:
+	pm_clk_destroy(dev);
+fail_clk_put:
+	clk_put(clk);
+
+	return ret;
+}
+
+static void davinci_psc_genpd_detach_dev(struct generic_pm_domain *pm_domain,
+					 struct device *dev)
+{
+	struct davinci_lpsc_clk *lpsc = to_davinci_lpsc_clk(pm_domain);
+
+	pm_clk_remove_clk(dev, lpsc->genpd_clk);
+	pm_clk_destroy(dev);
+
+	lpsc->genpd_clk = NULL;
+}
+
+/**
+ * davinci_lpsc_clk_register - register LPSC clock
+ * @dev: the clocks's device or NULL
+ * @name: name of this clock
+ * @parent_name: name of clock's parent
+ * @regmap: PSC MMIO region
+ * @md: local PSC number
+ * @pd: power domain
+ * @flags: LPSC_* flags
+ */
+static struct davinci_lpsc_clk *
+davinci_lpsc_clk_register(struct device *dev, const char *name,
+			  const char *parent_name, struct regmap *regmap,
+			  u32 md, u32 pd, u32 flags)
+{
+	struct clk_init_data init;
+	struct davinci_lpsc_clk *lpsc;
+	int ret;
+	bool is_on;
+
+	lpsc = kzalloc(sizeof(*lpsc), GFP_KERNEL);
+	if (!lpsc)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &davinci_lpsc_clk_ops;
+	init.parent_names = (parent_name ? &parent_name : NULL);
+	init.num_parents = (parent_name ? 1 : 0);
+	init.flags = 0;
+
+	if (flags & LPSC_ALWAYS_ENABLED)
+		init.flags |= CLK_IS_CRITICAL;
+
+	if (flags & LPSC_SET_RATE_PARENT)
+		init.flags |= CLK_SET_RATE_PARENT;
+
+	lpsc->dev = dev;
+	lpsc->regmap = regmap;
+	lpsc->hw.init = &init;
+	lpsc->md = md;
+	lpsc->pd = pd;
+	lpsc->flags = flags;
+
+	ret = clk_hw_register(dev, &lpsc->hw);
+	if (ret < 0) {
+		kfree(lpsc);
+		return ERR_PTR(ret);
+	}
+
+	/* for now, genpd is only registered when using device-tree */
+	if (!dev || !dev->of_node)
+		return lpsc;
+
+	/* genpd attach needs a way to look up this clock */
+	ret = clk_hw_register_clkdev(&lpsc->hw, name, best_dev_name(dev));
+
+	lpsc->pm_domain.name = devm_kasprintf(dev, GFP_KERNEL, "%s: %s",
+					      best_dev_name(dev), name);
+	lpsc->pm_domain.attach_dev = davinci_psc_genpd_attach_dev;
+	lpsc->pm_domain.detach_dev = davinci_psc_genpd_detach_dev;
+	lpsc->pm_domain.flags = GENPD_FLAG_PM_CLK;
+
+	is_on = davinci_lpsc_clk_is_enabled(&lpsc->hw);
+	pm_genpd_init(&lpsc->pm_domain, NULL, is_on);
+
+	return lpsc;
+}
+
+static int davinci_lpsc_clk_reset(struct clk *clk, bool reset)
+{
+	struct clk_hw *hw = __clk_get_hw(clk);
+	struct davinci_lpsc_clk *lpsc = to_davinci_lpsc_clk(hw);
+	u32 mdctl;
+
+	if (IS_ERR_OR_NULL(lpsc))
+		return -EINVAL;
+
+	mdctl = reset ? 0 : MDCTL_LRESET;
+	regmap_write_bits(lpsc->regmap, MDCTL(lpsc->md), MDCTL_LRESET, mdctl);
+
+	return 0;
+}
+
+static int davinci_psc_reset_assert(struct reset_controller_dev *rcdev,
+				    unsigned long id)
+{
+	struct davinci_psc_data *psc = to_davinci_psc_data(rcdev);
+	struct clk *clk = psc->clk_data.clks[id];
+
+	return davinci_lpsc_clk_reset(clk, true);
+}
+
+static int davinci_psc_reset_deassert(struct reset_controller_dev *rcdev,
+				      unsigned long id)
+{
+	struct davinci_psc_data *psc = to_davinci_psc_data(rcdev);
+	struct clk *clk = psc->clk_data.clks[id];
+
+	return davinci_lpsc_clk_reset(clk, false);
+}
+
+static const struct reset_control_ops davinci_psc_reset_ops = {
+	.assert		= davinci_psc_reset_assert,
+	.deassert	= davinci_psc_reset_deassert,
+};
+
+static int davinci_psc_reset_of_xlate(struct reset_controller_dev *rcdev,
+				      const struct of_phandle_args *reset_spec)
+{
+	struct of_phandle_args clkspec = *reset_spec; /* discard const qualifier */
+	struct clk *clk;
+	struct clk_hw *hw;
+	struct davinci_lpsc_clk *lpsc;
+
+	/* the clock node is the same as the reset node */
+	clk = of_clk_get_from_provider(&clkspec);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	hw = __clk_get_hw(clk);
+	lpsc = to_davinci_lpsc_clk(hw);
+	clk_put(clk);
+
+	/* not all modules support local reset */
+	if (!(lpsc->flags & LPSC_LOCAL_RESET))
+		return -EINVAL;
+
+	return lpsc->md;
+}
+
+static const struct regmap_config davinci_psc_regmap_config = {
+	.reg_bits	= 32,
+	.reg_stride	= 4,
+	.val_bits	= 32,
+};
+
+static struct davinci_psc_data *
+__davinci_psc_register_clocks(struct device *dev,
+			      const struct davinci_lpsc_clk_info *info,
+			      int num_clks,
+			      void __iomem *base)
+{
+	struct davinci_psc_data *psc;
+	struct clk **clks;
+	struct generic_pm_domain **pm_domains;
+	struct regmap *regmap;
+	int i, ret;
+
+	psc = kzalloc(sizeof(*psc), GFP_KERNEL);
+	if (!psc)
+		return ERR_PTR(-ENOMEM);
+
+	clks = kmalloc_array(num_clks, sizeof(*clks), GFP_KERNEL);
+	if (!clks) {
+		ret = -ENOMEM;
+		goto err_free_psc;
+	}
+
+	psc->clk_data.clks = clks;
+	psc->clk_data.clk_num = num_clks;
+
+	/*
+	 * init array with error so that of_clk_src_onecell_get() doesn't
+	 * return NULL for gaps in the sparse array
+	 */
+	for (i = 0; i < num_clks; i++)
+		clks[i] = ERR_PTR(-ENOENT);
+
+	pm_domains = kcalloc(num_clks, sizeof(*pm_domains), GFP_KERNEL);
+	if (!pm_domains) {
+		ret = -ENOMEM;
+		goto err_free_clks;
+	}
+
+	psc->pm_data.domains = pm_domains;
+	psc->pm_data.num_domains = num_clks;
+
+	regmap = regmap_init_mmio(dev, base, &davinci_psc_regmap_config);
+	if (IS_ERR(regmap)) {
+		ret = PTR_ERR(regmap);
+		goto err_free_pm_domains;
+	}
+
+	for (; info->name; info++) {
+		struct davinci_lpsc_clk *lpsc;
+
+		lpsc = davinci_lpsc_clk_register(dev, info->name, info->parent,
+						 regmap, info->md, info->pd,
+						 info->flags);
+		if (IS_ERR(lpsc)) {
+			dev_warn(dev, "Failed to register %s (%ld)\n",
+				 info->name, PTR_ERR(lpsc));
+			continue;
+		}
+
+		clks[info->md] = lpsc->hw.clk;
+		pm_domains[info->md] = &lpsc->pm_domain;
+	}
+
+	/*
+	 * for now, a reset controller is only registered when there is a device
+	 * to associate it with.
+	 */
+	if (!dev)
+		return psc;
+
+	psc->rcdev.ops = &davinci_psc_reset_ops;
+	psc->rcdev.owner = THIS_MODULE;
+	psc->rcdev.dev = dev;
+	psc->rcdev.of_node = dev->of_node;
+	psc->rcdev.of_reset_n_cells = 1;
+	psc->rcdev.of_xlate = davinci_psc_reset_of_xlate;
+	psc->rcdev.nr_resets = num_clks;
+
+	ret = devm_reset_controller_register(dev, &psc->rcdev);
+	if (ret < 0)
+		dev_warn(dev, "Failed to register reset controller (%d)\n", ret);
+
+	return psc;
+
+err_free_pm_domains:
+	kfree(pm_domains);
+err_free_clks:
+	kfree(clks);
+err_free_psc:
+	kfree(psc);
+
+	return ERR_PTR(ret);
+}
+
+int davinci_psc_register_clocks(struct device *dev,
+				const struct davinci_lpsc_clk_info *info,
+				u8 num_clks,
+				void __iomem *base)
+{
+	struct davinci_psc_data *psc;
+
+	psc = __davinci_psc_register_clocks(dev, info, num_clks, base);
+	if (IS_ERR(psc))
+		return PTR_ERR(psc);
+
+	for (; info->name; info++) {
+		const struct davinci_lpsc_clkdev_info *cdevs = info->cdevs;
+		struct clk *clk = psc->clk_data.clks[info->md];
+
+		if (!cdevs || IS_ERR_OR_NULL(clk))
+			continue;
+
+		for (; cdevs->con_id || cdevs->dev_id; cdevs++)
+			clk_register_clkdev(clk, cdevs->con_id, cdevs->dev_id);
+	}
+
+	return 0;
+}
+
+int of_davinci_psc_clk_init(struct device *dev,
+			    const struct davinci_lpsc_clk_info *info,
+			    u8 num_clks,
+			    void __iomem *base)
+{
+	struct device_node *node = dev->of_node;
+	struct davinci_psc_data *psc;
+
+	psc = __davinci_psc_register_clocks(dev, info, num_clks, base);
+	if (IS_ERR(psc))
+		return PTR_ERR(psc);
+
+	of_genpd_add_provider_onecell(node, &psc->pm_data);
+
+	of_clk_add_provider(node, of_clk_src_onecell_get, &psc->clk_data);
+
+	return 0;
+}
+
+static const struct of_device_id davinci_psc_of_match[] = {
+#ifdef CONFIG_ARCH_DAVINCI_DA850
+	{ .compatible = "ti,da850-psc0", .data = &of_da850_psc0_init_data },
+	{ .compatible = "ti,da850-psc1", .data = &of_da850_psc1_init_data },
+#endif
+	{ }
+};
+
+static const struct platform_device_id davinci_psc_id_table[] = {
+#ifdef CONFIG_ARCH_DAVINCI_DA830
+	{ .name = "da830-psc0", .driver_data = (kernel_ulong_t)&da830_psc0_init_data },
+	{ .name = "da830-psc1", .driver_data = (kernel_ulong_t)&da830_psc1_init_data },
+#endif
+#ifdef CONFIG_ARCH_DAVINCI_DA850
+	{ .name = "da850-psc0", .driver_data = (kernel_ulong_t)&da850_psc0_init_data },
+	{ .name = "da850-psc1", .driver_data = (kernel_ulong_t)&da850_psc1_init_data },
+#endif
+	{ }
+};
+
+static int davinci_psc_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	const struct of_device_id *of_id;
+	const struct davinci_psc_init_data *init_data = NULL;
+	void __iomem *base;
+	int ret;
+
+	of_id = of_match_device(davinci_psc_of_match, dev);
+	if (of_id)
+		init_data = of_id->data;
+	else if (pdev->id_entry)
+		init_data = (void *)pdev->id_entry->driver_data;
+
+	if (!init_data) {
+		dev_err(dev, "unable to find driver init data\n");
+		return -EINVAL;
+	}
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	ret = devm_clk_bulk_get(dev, init_data->num_parent_clks,
+				init_data->parent_clks);
+	if (ret < 0)
+		return ret;
+
+	return init_data->psc_init(dev, base);
+}
+
+static struct platform_driver davinci_psc_driver = {
+	.probe		= davinci_psc_probe,
+	.driver		= {
+		.name		= "davinci-psc-clk",
+		.of_match_table	= davinci_psc_of_match,
+	},
+	.id_table	= davinci_psc_id_table,
+};
+
+static int __init davinci_psc_driver_init(void)
+{
+	return platform_driver_register(&davinci_psc_driver);
+}
+
+/* has to be postcore_initcall because davinci_gpio depend on PSC clocks */
+postcore_initcall(davinci_psc_driver_init);
diff --git a/drivers/clk/davinci/psc.h b/drivers/clk/davinci/psc.h
new file mode 100644
index 0000000000..bd23f6fd56
--- /dev/null
+++ b/drivers/clk/davinci/psc.h
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Clock driver for TI Davinci PSC controllers
+ *
+ * Copyright (C) 2018 David Lechner <david@lechnology.com>
+ */
+
+#ifndef __CLK_DAVINCI_PSC_H__
+#define __CLK_DAVINCI_PSC_H__
+
+#include <linux/clk-provider.h>
+#include <linux/types.h>
+
+/* PSC quirk flags */
+#define LPSC_ALWAYS_ENABLED	BIT(0) /* never disable this clock */
+#define LPSC_SET_RATE_PARENT	BIT(1) /* propagate set_rate to parent clock */
+#define LPSC_FORCE		BIT(2) /* requires MDCTL FORCE bit */
+#define LPSC_LOCAL_RESET	BIT(3) /* acts as reset provider */
+
+struct davinci_lpsc_clkdev_info {
+	const char *con_id;
+	const char *dev_id;
+};
+
+#define LPSC_CLKDEV(c, d) {	\
+	.con_id = (c),		\
+	.dev_id = (d)		\
+}
+
+#define LPSC_CLKDEV1(n, c, d) \
+static const struct davinci_lpsc_clkdev_info n[] __initconst = {	\
+	LPSC_CLKDEV((c), (d)),						\
+	{ }								\
+}
+
+#define LPSC_CLKDEV2(n, c1, d1, c2, d2) \
+static const struct davinci_lpsc_clkdev_info n[] __initconst = {	\
+	LPSC_CLKDEV((c1), (d1)),					\
+	LPSC_CLKDEV((c2), (d2)),					\
+	{ }								\
+}
+
+#define LPSC_CLKDEV3(n, c1, d1, c2, d2, c3, d3) \
+static const struct davinci_lpsc_clkdev_info n[] __initconst = {	\
+	LPSC_CLKDEV((c1), (d1)),					\
+	LPSC_CLKDEV((c2), (d2)),					\
+	LPSC_CLKDEV((c3), (d3)),					\
+	{ }								\
+}
+
+/**
+ * davinci_lpsc_clk_info - LPSC module-specific clock information
+ * @name: the clock name
+ * @parent: the parent clock name
+ * @cdevs: optional array of clkdev lookup table info
+ * @md: the local module domain (LPSC id)
+ * @pd: the power domain id
+ * @flags: bitmask of LPSC_* flags
+ */
+struct davinci_lpsc_clk_info {
+	const char *name;
+	const char *parent;
+	const struct davinci_lpsc_clkdev_info *cdevs;
+	u32 md;
+	u32 pd;
+	unsigned long flags;
+};
+
+#define LPSC(m, d, n, p, c, f)	\
+{				\
+	.name	= #n,		\
+	.parent	= #p,		\
+	.cdevs	= (c),		\
+	.md	= (m),		\
+	.pd	= (d),		\
+	.flags	= (f),		\
+}
+
+int davinci_psc_register_clocks(struct device *dev,
+				const struct davinci_lpsc_clk_info *info,
+				u8 num_clks,
+				void __iomem *base);
+
+int of_davinci_psc_clk_init(struct device *dev,
+			    const struct davinci_lpsc_clk_info *info,
+			    u8 num_clks,
+			    void __iomem *base);
+
+/* Device-specific data */
+
+struct davinci_psc_init_data {
+	struct clk_bulk_data *parent_clks;
+	int num_parent_clks;
+	int (*psc_init)(struct device *dev, void __iomem *base);
+};
+
+#ifdef CONFIG_ARCH_DAVINCI_DA830
+extern const struct davinci_psc_init_data da830_psc0_init_data;
+extern const struct davinci_psc_init_data da830_psc1_init_data;
+#endif
+#ifdef CONFIG_ARCH_DAVINCI_DA850
+extern const struct davinci_psc_init_data da850_psc0_init_data;
+extern const struct davinci_psc_init_data da850_psc1_init_data;
+extern const struct davinci_psc_init_data of_da850_psc0_init_data;
+extern const struct davinci_psc_init_data of_da850_psc1_init_data;
+#endif
+#endif /* __CLK_DAVINCI_PSC_H__ */