arm: rmobile: Add Stout board support

Stout is an entry level development board based on R-Car H2 SoC (R8A7790)

This commit supports the following peripherals:
- SCIFA, I2C, Ethernet, QSPI, SDHI0/2, CPLD

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

1 files changed, 232 insertions, 0 deletions

diff --git a/board/renesas/stout/stout.c b/board/renesas/stout/stout.c
new file mode 100644
index 0000000000..7df7394091
--- /dev/null
+++ b/board/renesas/stout/stout.c
@@ -0,0 +1,232 @@
+/*
+ * board/renesas/stout/stout.c
+ *     This file is Stout board support.
+ *
+ * Copyright (C) 2015 Renesas Electronics Europe GmbH
+ * Copyright (C) 2015 Renesas Electronics Corporation
+ * Copyright (C) 2015 Cogent Embedded, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <netdev.h>
+#include <dm.h>
+#include <dm/platform_data/serial_sh.h>
+#include <asm/processor.h>
+#include <asm/mach-types.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/arch/rmobile.h>
+#include <asm/arch/rcar-mstp.h>
+#include <asm/arch/mmc.h>
+#include <asm/arch/sh_sdhi.h>
+#include <miiphy.h>
+#include <i2c.h>
+#include <mmc.h>
+#include "qos.h"
+#include "cpld.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define CLK2MHZ(clk)	(clk / 1000 / 1000)
+void s_init(void)
+{
+	struct rcar_rwdt *rwdt = (struct rcar_rwdt *)RWDT_BASE;
+	struct rcar_swdt *swdt = (struct rcar_swdt *)SWDT_BASE;
+
+	/* Watchdog init */
+	writel(0xA5A5A500, &rwdt->rwtcsra);
+	writel(0xA5A5A500, &swdt->swtcsra);
+
+	/* CPU frequency setting. Set to 1.4GHz */
+	if (rmobile_get_cpu_rev_integer() >= R8A7790_CUT_ES2X) {
+		u32 stat = 0;
+		u32 stc = ((1400 / CLK2MHZ(CONFIG_SYS_CLK_FREQ)) - 1)
+			<< PLL0_STC_BIT;
+		clrsetbits_le32(PLL0CR, PLL0_STC_MASK, stc);
+
+		do {
+			stat = readl(PLLECR) & PLL0ST;
+		} while (stat == 0x0);
+	}
+
+	/* QoS(Quality-of-Service) Init */
+	qos_init();
+}
+
+#define TMU0_MSTP125	(1 << 25)
+#define SCIFA0_MSTP204	(1 << 4)
+#define SDHI0_MSTP314	(1 << 14)
+#define SDHI2_MSTP312	(1 << 12)
+#define ETHER_MSTP813	(1 << 13)
+
+#define MSTPSR3		0xE6150048
+#define SMSTPCR3	0xE615013C
+
+#define SD2CKCR		0xE6150078
+#define SD2_97500KHZ	0x7
+
+int board_early_init_f(void)
+{
+	/* TMU0 */
+	mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
+	/* SCIFA0 */
+	mstp_clrbits_le32(MSTPSR2, SMSTPCR2, SCIFA0_MSTP204);
+	/* ETHER */
+	mstp_clrbits_le32(MSTPSR8, SMSTPCR8, ETHER_MSTP813);
+	/* SDHI0,2 */
+	mstp_clrbits_le32(MSTPSR3, SMSTPCR3, SDHI0_MSTP314 | SDHI2_MSTP312);
+
+	/*
+	 * SD0 clock is set to 97.5MHz by default.
+	 * Set SD2 to the 97.5MHz as well.
+	 */
+	writel(SD2_97500KHZ, SD2CKCR);
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+	/* Init PFC controller */
+	r8a7790_pinmux_init();
+
+	cpld_init();
+
+#ifdef CONFIG_SH_ETHER
+	/* ETHER Enable */
+	gpio_request(GPIO_FN_ETH_CRS_DV, NULL);
+	gpio_request(GPIO_FN_ETH_RX_ER, NULL);
+	gpio_request(GPIO_FN_ETH_RXD0, NULL);
+	gpio_request(GPIO_FN_ETH_RXD1, NULL);
+	gpio_request(GPIO_FN_ETH_LINK, NULL);
+	gpio_request(GPIO_FN_ETH_REF_CLK, NULL);
+	gpio_request(GPIO_FN_ETH_MDIO, NULL);
+	gpio_request(GPIO_FN_ETH_TXD1, NULL);
+	gpio_request(GPIO_FN_ETH_TX_EN, NULL);
+	gpio_request(GPIO_FN_ETH_MAGIC, NULL);
+	gpio_request(GPIO_FN_ETH_TXD0, NULL);
+	gpio_request(GPIO_FN_ETH_MDC, NULL);
+	gpio_request(GPIO_FN_IRQ1, NULL);
+
+	gpio_request(GPIO_GP_3_31, NULL); /* PHY_RST */
+	gpio_direction_output(GPIO_GP_3_31, 0);
+	mdelay(20);
+	gpio_set_value(GPIO_GP_3_31, 1);
+	udelay(1);
+#endif
+
+	return 0;
+}
+
+#define CXR24 0xEE7003C0 /* MAC address high register */
+#define CXR25 0xEE7003C8 /* MAC address low register */
+int board_eth_init(bd_t *bis)
+{
+	int ret = -ENODEV;
+
+#ifdef CONFIG_SH_ETHER
+	u32 val;
+	unsigned char enetaddr[6];
+
+	ret = sh_eth_initialize(bis);
+	if (!eth_getenv_enetaddr("ethaddr", enetaddr))
+		return ret;
+
+	/* Set Mac address */
+	val = enetaddr[0] << 24 | enetaddr[1] << 16 |
+	      enetaddr[2] << 8 | enetaddr[3];
+	writel(val, CXR24);
+
+	val = enetaddr[4] << 8 | enetaddr[5];
+	writel(val, CXR25);
+#endif
+
+	return ret;
+}
+
+/* Stout has KSZ8041NL/RNL */
+#define PHY_CONTROL1		0x1E
+#define PHY_LED_MODE		0xC0000
+#define PHY_LED_MODE_ACK	0x4000
+int board_phy_config(struct phy_device *phydev)
+{
+	int ret = phy_read(phydev, MDIO_DEVAD_NONE, PHY_CONTROL1);
+	ret &= ~PHY_LED_MODE;
+	ret |= PHY_LED_MODE_ACK;
+	ret = phy_write(phydev, MDIO_DEVAD_NONE, PHY_CONTROL1, (u16)ret);
+
+	return 0;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	int ret = -ENODEV;
+
+#ifdef CONFIG_SH_SDHI
+	gpio_request(GPIO_FN_SD0_DAT0, NULL);
+	gpio_request(GPIO_FN_SD0_DAT1, NULL);
+	gpio_request(GPIO_FN_SD0_DAT2, NULL);
+	gpio_request(GPIO_FN_SD0_DAT3, NULL);
+	gpio_request(GPIO_FN_SD0_CLK, NULL);
+	gpio_request(GPIO_FN_SD0_CMD, NULL);
+	gpio_request(GPIO_FN_SD0_CD, NULL);
+	gpio_request(GPIO_FN_SD2_DAT0, NULL);
+	gpio_request(GPIO_FN_SD2_DAT1, NULL);
+	gpio_request(GPIO_FN_SD2_DAT2, NULL);
+	gpio_request(GPIO_FN_SD2_DAT3, NULL);
+	gpio_request(GPIO_FN_SD2_CLK, NULL);
+	gpio_request(GPIO_FN_SD2_CMD, NULL);
+	gpio_request(GPIO_FN_SD2_CD, NULL);
+
+	/* SDHI0 - needs CPLD mux setup */
+	gpio_request(GPIO_GP_3_30, NULL);
+	gpio_direction_output(GPIO_GP_3_30, 1); /* VLDO3=3.3V */
+	gpio_request(GPIO_GP_5_24, NULL);
+	gpio_direction_output(GPIO_GP_5_24, 1); /* power on */
+
+	ret = sh_sdhi_init(CONFIG_SYS_SH_SDHI0_BASE, 0,
+			   SH_SDHI_QUIRK_16BIT_BUF);
+	if (ret)
+		return ret;
+
+	/* SDHI2 - needs CPLD mux setup */
+	gpio_request(GPIO_GP_3_29, NULL);
+	gpio_direction_output(GPIO_GP_3_29, 1); /* VLDO4=3.3V */
+	gpio_request(GPIO_GP_5_25, NULL);
+	gpio_direction_output(GPIO_GP_5_25, 1); /* power on */
+
+	ret = sh_sdhi_init(CONFIG_SYS_SH_SDHI2_BASE, 2, 0);
+#endif
+	return ret;
+}
+
+
+int dram_init(void)
+{
+	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+
+	return 0;
+}
+
+const struct rmobile_sysinfo sysinfo = {
+	CONFIG_RMOBILE_BOARD_STRING
+};
+
+static const struct sh_serial_platdata serial_platdata = {
+	.base = SCIFA0_BASE,
+	.type = PORT_SCIFA,
+	.clk = CONFIG_MP_CLK_FREQ,
+};
+
+U_BOOT_DEVICE(stout_serials) = {
+	.name = "serial_sh",
+	.platdata = &serial_platdata,
+};