1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/clk/ti/clk-814x.c b/drivers/clk/ti/clk-814x.c
new file mode 100644
index 000000000..4f8bd34ec
--- /dev/null
+++ b/drivers/clk/ti/clk-814x.c
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clk/ti.h>
+#include <linux/of_platform.h>
+#include <dt-bindings/clock/dm814.h>
+
+#include "clock.h"
+
+static const struct omap_clkctrl_reg_data dm814_default_clkctrl_regs[] __initconst = {
+	{ DM814_USB_OTG_HS_CLKCTRL, NULL, CLKF_SW_SUP, "pll260dcoclkldo" },
+	{ 0 },
+};
+
+static const struct omap_clkctrl_reg_data dm814_alwon_clkctrl_regs[] __initconst = {
+	{ DM814_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
+	{ DM814_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
+	{ DM814_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
+	{ DM814_GPIO1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" },
+	{ DM814_GPIO2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" },
+	{ DM814_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
+	{ DM814_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
+	{ DM814_WD_TIMER_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk18_ck" },
+	{ DM814_MCSPI1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" },
+	{ DM814_GPMC_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" },
+	{ DM814_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "mpu_ck" },
+	{ DM814_RTC_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk18_ck" },
+	{ DM814_TPCC_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" },
+	{ DM814_TPTC0_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" },
+	{ DM814_TPTC1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" },
+	{ DM814_TPTC2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" },
+	{ DM814_TPTC3_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" },
+	{ DM814_MMC1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk8_ck" },
+	{ DM814_MMC2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk8_ck" },
+	{ DM814_MMC3_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk8_ck" },
+	{ 0 },
+};
+
+static const struct
+omap_clkctrl_reg_data dm814_alwon_ethernet_clkctrl_regs[] __initconst = {
+	{ 0, NULL, CLKF_SW_SUP, "cpsw_125mhz_gclk" },
+};
+
+const struct omap_clkctrl_data dm814_clkctrl_data[] __initconst = {
+	{ 0x48180500, dm814_default_clkctrl_regs },
+	{ 0x48181400, dm814_alwon_clkctrl_regs },
+	{ 0x481815d4, dm814_alwon_ethernet_clkctrl_regs },
+	{ 0 },
+};
+
+static struct ti_dt_clk dm814_clks[] = {
+	DT_CLK(NULL, "timer_sys_ck", "devosc_ck"),
+	{ .node_name = NULL },
+};
+
+static bool timer_clocks_initialized;
+
+static int __init dm814x_adpll_early_init(void)
+{
+	struct device_node *np;
+
+	if (!timer_clocks_initialized)
+		return -ENODEV;
+
+	np = of_find_node_by_name(NULL, "pllss");
+	if (!np) {
+		pr_err("Could not find node for plls\n");
+		return -ENODEV;
+	}
+
+	of_platform_populate(np, NULL, NULL, NULL);
+	of_node_put(np);
+
+	return 0;
+}
+core_initcall(dm814x_adpll_early_init);
+
+static const char * const init_clocks[] = {
+	"pll040clkout",		/* MPU 481c5040.adpll.clkout */
+	"pll290clkout",		/* DDR 481c5290.adpll.clkout */
+};
+
+static int __init dm814x_adpll_enable_init_clocks(void)
+{
+	int i, err;
+
+	if (!timer_clocks_initialized)
+		return -ENODEV;
+
+	for (i = 0; i < ARRAY_SIZE(init_clocks); i++) {
+		struct clk *clock;
+
+		clock = clk_get(NULL, init_clocks[i]);
+		if (WARN(IS_ERR(clock), "could not find init clock %s\n",
+			 init_clocks[i]))
+			continue;
+		err = clk_prepare_enable(clock);
+		if (WARN(err, "could not enable init clock %s\n",
+			 init_clocks[i]))
+			continue;
+	}
+
+	return 0;
+}
+postcore_initcall(dm814x_adpll_enable_init_clocks);
+
+int __init dm814x_dt_clk_init(void)
+{
+	ti_dt_clocks_register(dm814_clks);
+	omap2_clk_disable_autoidle_all();
+	ti_clk_add_aliases();
+	omap2_clk_enable_init_clocks(NULL, 0);
+	timer_clocks_initialized = true;
+
+	return 0;
+}