1 files changed, 199 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/82xx/km82xx.c b/arch/powerpc/platforms/82xx/km82xx.c
new file mode 100644
index 000000000..c86da3f2b
--- /dev/null
+++ b/arch/powerpc/platforms/82xx/km82xx.c
@@ -0,0 +1,199 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Keymile km82xx support
+ * Copyright 2008-2011 DENX Software Engineering GmbH
+ * Author: Heiko Schocher <hs@denx.de>
+ *
+ * based on code from:
+ * Copyright 2007 Freescale Semiconductor, Inc.
+ * Author: Scott Wood <scottwood@freescale.com>
+ */
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/fsl_devices.h>
+#include <linux/of_platform.h>
+
+#include <linux/io.h>
+#include <asm/cpm2.h>
+#include <asm/udbg.h>
+#include <asm/machdep.h>
+#include <linux/time.h>
+
+#include <sysdev/fsl_soc.h>
+#include <sysdev/cpm2_pic.h>
+
+#include "pq2.h"
+
+static void __init km82xx_pic_init(void)
+{
+	struct device_node *np = of_find_compatible_node(NULL, NULL,
+							"fsl,pq2-pic");
+	if (!np) {
+		pr_err("PIC init: can not find cpm-pic node\n");
+		return;
+	}
+
+	cpm2_pic_init(np);
+	of_node_put(np);
+}
+
+struct cpm_pin {
+	int port, pin, flags;
+};
+
+static __initdata struct cpm_pin km82xx_pins[] = {
+	/* SMC1 */
+	{2, 4, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{2, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+
+	/* SMC2 */
+	{0, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{0, 9, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+
+	/* SCC1 */
+	{2, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{2, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
+
+	/* SCC4 */
+	{2, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{2, 24, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{2,  9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{2,  8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{3, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{3, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+
+	/* FCC1 */
+	{0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+	{0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+	{0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+	{0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+	{0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
+	{0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
+	{0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
+	{0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
+	{0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
+	{0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
+
+	{2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{2, 23, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+
+	/* FCC2 */
+	{1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+	{1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+	{1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+	{1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+	{1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
+	{1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+
+	{2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+	{2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+
+	/* MDC */
+	{0, 13, CPM_PIN_OUTPUT | CPM_PIN_GPIO},
+
+#if defined(CONFIG_I2C_CPM)
+	/* I2C */
+	{3, 14, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN},
+	{3, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN},
+#endif
+
+	/* USB */
+	{0, 10, CPM_PIN_OUTPUT | CPM_PIN_GPIO},    /* FULL_SPEED */
+	{0, 11, CPM_PIN_OUTPUT | CPM_PIN_GPIO},    /*/SLAVE */
+	{2, 10, CPM_PIN_INPUT  | CPM_PIN_PRIMARY}, /* RXN */
+	{2, 11, CPM_PIN_INPUT  | CPM_PIN_PRIMARY}, /* RXP */
+	{2, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* /OE */
+	{2, 27, CPM_PIN_INPUT  | CPM_PIN_PRIMARY}, /* RXCLK */
+	{3, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* TXP */
+	{3, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* TXN */
+	{3, 25, CPM_PIN_INPUT  | CPM_PIN_PRIMARY}, /* RXD */
+
+	/* SPI */
+	{3, 16, CPM_PIN_INPUT | CPM_PIN_SECONDARY},/* SPI_MISO PD16 */
+	{3, 17, CPM_PIN_INPUT | CPM_PIN_SECONDARY},/* SPI_MOSI PD17 */
+	{3, 18, CPM_PIN_INPUT | CPM_PIN_SECONDARY},/* SPI_CLK PD18 */
+};
+
+static void __init init_ioports(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(km82xx_pins); i++) {
+		const struct cpm_pin *pin = &km82xx_pins[i];
+		cpm2_set_pin(pin->port, pin->pin, pin->flags);
+	}
+
+	cpm2_smc_clk_setup(CPM_CLK_SMC2, CPM_BRG8);
+	cpm2_smc_clk_setup(CPM_CLK_SMC1, CPM_BRG7);
+	cpm2_clk_setup(CPM_CLK_SCC1, CPM_CLK11, CPM_CLK_RX);
+	cpm2_clk_setup(CPM_CLK_SCC1, CPM_CLK11, CPM_CLK_TX);
+	cpm2_clk_setup(CPM_CLK_SCC3, CPM_CLK5, CPM_CLK_RTX);
+	cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK7, CPM_CLK_RX);
+	cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK8, CPM_CLK_TX);
+	cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_RX);
+	cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK9,  CPM_CLK_TX);
+	cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX);
+	cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX);
+
+	/* Force USB FULL SPEED bit to '1' */
+	setbits32(&cpm2_immr->im_ioport.iop_pdata, 1 << (31 - 10));
+	/* clear USB_SLAVE */
+	clrbits32(&cpm2_immr->im_ioport.iop_pdata, 1 << (31 - 11));
+}
+
+static void __init km82xx_setup_arch(void)
+{
+	if (ppc_md.progress)
+		ppc_md.progress("km82xx_setup_arch()", 0);
+
+	cpm2_reset();
+
+	/* When this is set, snooping CPM DMA from RAM causes
+	 * machine checks.  See erratum SIU18.
+	 */
+	clrbits32(&cpm2_immr->im_siu_conf.siu_82xx.sc_bcr, MPC82XX_BCR_PLDP);
+
+	init_ioports();
+
+	if (ppc_md.progress)
+		ppc_md.progress("km82xx_setup_arch(), finish", 0);
+}
+
+static const struct of_device_id of_bus_ids[] __initconst = {
+	{ .compatible = "simple-bus", },
+	{},
+};
+
+static int __init declare_of_platform_devices(void)
+{
+	of_platform_bus_probe(NULL, of_bus_ids, NULL);
+
+	return 0;
+}
+machine_device_initcall(km82xx, declare_of_platform_devices);
+
+define_machine(km82xx)
+{
+	.name = "Keymile km82xx",
+	.compatible = "keymile,km82xx",
+	.setup_arch = km82xx_setup_arch,
+	.init_IRQ = km82xx_pic_init,
+	.get_irq = cpm2_get_irq,
+	.restart = pq2_restart,
+	.progress = udbg_progress,
+};