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u-boot/board/renesas/salvator-x/salvator-x.c
Marek Vasut 183f5fd3ca ARM: rmobile: Fix SD divider settings on Gen3 
On RCar M3 and on RCar H3 newer than and not including ES1.0, the SD clock
must be divided by 4 rather than 2 because a hardware workaround present
only in the H3 ES1.0 has been removed from these chips. U-Boot currently
only supports M3 and H3 ES 2.0 and newer, so configure the SD pre-divider
to 4 to prevent SD instability.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2017-09-07 20:04:40 -04:00

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/*
* board/renesas/salvator-x/salvator-x.c
* This file is Salvator-X/Salvator-XS board support.
*
* Copyright (C) 2015-2017 Renesas Electronics Corporation
* Copyright (C) 2015 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
*
* 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 <linux/errno.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/arch/gpio.h>
#include <asm/arch/rmobile.h>
#include <asm/arch/rcar-mstp.h>
#include <asm/arch/sh_sdhi.h>
#include <i2c.h>
#include <mmc.h>
DECLARE_GLOBAL_DATA_PTR;
#define CPGWPCR 0xE6150904
#define CPGWPR 0xE615090C
#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);
writel(0xA5A50000, CPGWPCR);
writel(0xFFFFFFFF, CPGWPR);
}
#define GSX_MSTP112 BIT(12) /* 3DG */
#define TMU0_MSTP125 BIT(25) /* secure */
#define TMU1_MSTP124 BIT(24) /* non-secure */
#define SCIF2_MSTP310 BIT(10) /* SCIF2 */
#define ETHERAVB_MSTP812 BIT(12)
#define DVFS_MSTP926 BIT(26)
#define SD0_MSTP314 BIT(14)
#define SD1_MSTP313 BIT(13)
#define SD2_MSTP312 BIT(12) /* either MMC0 */
#define SD3_MSTP311 BIT(11) /* either MMC1 */
#define SD0CKCR 0xE6150074
#define SD1CKCR 0xE6150078
#define SD2CKCR 0xE6150268
#define SD3CKCR 0xE615026C
int board_early_init_f(void)
{
/* TMU0,1 */ /* which use ? */
mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125 | TMU1_MSTP124);
/* SCIF2 */
mstp_clrbits_le32(MSTPSR3, SMSTPCR3, SCIF2_MSTP310);
/* EHTERAVB */
mstp_clrbits_le32(MSTPSR8, SMSTPCR8, ETHERAVB_MSTP812);
/* eMMC */
mstp_clrbits_le32(MSTPSR3, SMSTPCR3, SD1_MSTP313 | SD2_MSTP312);
/* SDHI0, 3 */
mstp_clrbits_le32(MSTPSR3, SMSTPCR3, SD0_MSTP314 | SD3_MSTP311);
writel(1, SD0CKCR);
writel(1, SD1CKCR);
writel(1, SD2CKCR);
writel(1, SD3CKCR);
#if defined(CONFIG_SYS_I2C) && defined(CONFIG_SYS_I2C_SH)
/* DVFS for reset */
mstp_clrbits_le32(MSTPSR9, SMSTPCR9, DVFS_MSTP926);
#endif
return 0;
}
/* SYSC */
/* R/- 32 Power status register 2(3DG) */
#define SYSC_PWRSR2 0xE6180100
/* -/W 32 Power resume control register 2 (3DG) */
#define SYSC_PWRONCR2 0xE618010C
int board_init(void)
{
/* adress of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_TEXT_BASE + 0x50000;
/* Init PFC controller */
#if defined(CONFIG_R8A7795)
r8a7795_pinmux_init();
#elif defined(CONFIG_R8A7796)
r8a7796_pinmux_init();
#endif
#if defined(CONFIG_R8A7795)
/* GSX: force power and clock supply */
writel(0x0000001F, SYSC_PWRONCR2);
while (readl(SYSC_PWRSR2) != 0x000003E0)
mdelay(20);
mstp_clrbits_le32(MSTPSR1, SMSTPCR1, GSX_MSTP112);
#endif
/* USB1 pull-up */
setbits_le32(PFC_PUEN6, PUEN_USB1_OVC | PUEN_USB1_PWEN);
#ifdef CONFIG_RENESAS_RAVB
/* EtherAVB Enable */
/* GPSR2 */
gpio_request(GPIO_GFN_AVB_AVTP_CAPTURE_A, NULL);
gpio_request(GPIO_GFN_AVB_AVTP_MATCH_A, NULL);
gpio_request(GPIO_GFN_AVB_LINK, NULL);
gpio_request(GPIO_GFN_AVB_PHY_INT, NULL);
gpio_request(GPIO_GFN_AVB_MAGIC, NULL);
gpio_request(GPIO_GFN_AVB_MDC, NULL);
/* IPSR0 */
gpio_request(GPIO_IFN_AVB_MDC, NULL);
gpio_request(GPIO_IFN_AVB_MAGIC, NULL);
gpio_request(GPIO_IFN_AVB_PHY_INT, NULL);
gpio_request(GPIO_IFN_AVB_LINK, NULL);
gpio_request(GPIO_IFN_AVB_AVTP_MATCH_A, NULL);
gpio_request(GPIO_IFN_AVB_AVTP_CAPTURE_A, NULL);
/* IPSR1 */
gpio_request(GPIO_FN_AVB_AVTP_PPS, NULL);
/* IPSR2 */
gpio_request(GPIO_FN_AVB_AVTP_MATCH_B, NULL);
/* IPSR3 */
gpio_request(GPIO_FN_AVB_AVTP_CAPTURE_B, NULL);
#if defined(CONFIG_R8A7795)
/* USB2_OVC */
gpio_request(GPIO_GP_6_15, NULL);
gpio_direction_input(GPIO_GP_6_15);
/* USB2_PWEN */
gpio_request(GPIO_GP_6_14, NULL);
gpio_direction_output(GPIO_GP_6_14, 1);
gpio_set_value(GPIO_GP_6_14, 1);
#endif
/* AVB_PHY_RST */
gpio_request(GPIO_GP_2_10, NULL);
gpio_direction_output(GPIO_GP_2_10, 0);
mdelay(20);
gpio_set_value(GPIO_GP_2_10, 1);
udelay(1);
#endif
#ifdef CONFIG_MMC
/* SDHI0 */
gpio_request(GPIO_GFN_SD0_DAT0, NULL);
gpio_request(GPIO_GFN_SD0_DAT1, NULL);
gpio_request(GPIO_GFN_SD0_DAT2, NULL);
gpio_request(GPIO_GFN_SD0_DAT3, NULL);
gpio_request(GPIO_GFN_SD0_CLK, NULL);
gpio_request(GPIO_GFN_SD0_CMD, NULL);
gpio_request(GPIO_GFN_SD0_CD, NULL);
gpio_request(GPIO_GFN_SD0_WP, NULL);
gpio_request(GPIO_GP_5_2, NULL);
gpio_request(GPIO_GP_5_1, NULL);
gpio_direction_output(GPIO_GP_5_2, 1); /* power on */
gpio_direction_output(GPIO_GP_5_1, 1); /* 1: 3.3V, 0: 1.8V */
/* SDHI1/SDHI2 eMMC */
gpio_request(GPIO_GFN_SD1_DAT0, NULL);
gpio_request(GPIO_GFN_SD1_DAT1, NULL);
gpio_request(GPIO_GFN_SD1_DAT2, NULL);
gpio_request(GPIO_GFN_SD1_DAT3, NULL);
gpio_request(GPIO_GFN_SD2_DAT0, NULL);
gpio_request(GPIO_GFN_SD2_DAT1, NULL);
gpio_request(GPIO_GFN_SD2_DAT2, NULL);
gpio_request(GPIO_GFN_SD2_DAT3, NULL);
gpio_request(GPIO_GFN_SD2_CLK, NULL);
#if defined(CONFIG_R8A7795)
gpio_request(GPIO_GFN_SD2_CMD, NULL);
#elif defined(CONFIG_R8A7796)
gpio_request(GPIO_FN_SD2_CMD, NULL);
#else
#error Only R8A7795 and R87796 is supported
#endif
gpio_request(GPIO_GP_5_3, NULL);
gpio_request(GPIO_GP_5_9, NULL);
gpio_direction_output(GPIO_GP_5_3, 0); /* 1: 3.3V, 0: 1.8V */
gpio_direction_output(GPIO_GP_5_9, 0); /* 1: 3.3V, 0: 1.8V */
#if defined(CONFIG_R8A7795)
/* SDHI3 */
gpio_request(GPIO_GFN_SD3_DAT0, NULL); /* GP_4_9 */
gpio_request(GPIO_GFN_SD3_DAT1, NULL); /* GP_4_10 */
gpio_request(GPIO_GFN_SD3_DAT2, NULL); /* GP_4_11 */
gpio_request(GPIO_GFN_SD3_DAT3, NULL); /* GP_4_12 */
gpio_request(GPIO_GFN_SD3_CLK, NULL); /* GP_4_7 */
gpio_request(GPIO_GFN_SD3_CMD, NULL); /* GP_4_8 */
#elif defined(CONFIG_R8A7796)
gpio_request(GPIO_FN_SD3_DAT0, NULL); /* GP_4_9 */
gpio_request(GPIO_FN_SD3_DAT1, NULL); /* GP_4_10 */
gpio_request(GPIO_FN_SD3_DAT2, NULL); /* GP_4_11 */
gpio_request(GPIO_FN_SD3_DAT3, NULL); /* GP_4_12 */
gpio_request(GPIO_FN_SD3_CLK, NULL); /* GP_4_7 */
gpio_request(GPIO_FN_SD3_CMD, NULL); /* GP_4_8 */
#else
#error Only R8A7795 and R87796 is supported
#endif
/* IPSR10 */
gpio_request(GPIO_FN_SD3_CD, NULL);
gpio_request(GPIO_FN_SD3_WP, NULL);
gpio_request(GPIO_GP_3_15, NULL);
gpio_request(GPIO_GP_3_14, NULL);
gpio_direction_output(GPIO_GP_3_15, 1); /* power on */
gpio_direction_output(GPIO_GP_3_14, 1); /* 1: 3.3V, 0: 1.8V */
#endif
return 0;
}
int dram_init(void)
{
gd->ram_size = PHYS_SDRAM_1_SIZE;
#if (CONFIG_NR_DRAM_BANKS >= 2)
gd->ram_size += PHYS_SDRAM_2_SIZE;
#endif
#if (CONFIG_NR_DRAM_BANKS >= 3)
gd->ram_size += PHYS_SDRAM_3_SIZE;
#endif
#if (CONFIG_NR_DRAM_BANKS >= 4)
gd->ram_size += PHYS_SDRAM_4_SIZE;
#endif
return 0;
}
int dram_init_banksize(void)
{
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
#if (CONFIG_NR_DRAM_BANKS >= 2)
gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
#endif
#if (CONFIG_NR_DRAM_BANKS >= 3)
gd->bd->bi_dram[2].start = PHYS_SDRAM_3;
gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE;
#endif
#if (CONFIG_NR_DRAM_BANKS >= 4)
gd->bd->bi_dram[3].start = PHYS_SDRAM_4;
gd->bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE;
#endif
return 0;
}
const struct rmobile_sysinfo sysinfo = {
CONFIG_RCAR_BOARD_STRING
};
#define RST_BASE 0xE6160000
#define RST_CA57RESCNT (RST_BASE + 0x40)
#define RST_CA53RESCNT (RST_BASE + 0x44)
#define RST_RSTOUTCR (RST_BASE + 0x58)
#define RST_CODE 0xA5A5000F
void reset_cpu(ulong addr)
{
#if defined(CONFIG_SYS_I2C) && defined(CONFIG_SYS_I2C_SH)
i2c_reg_write(CONFIG_SYS_I2C_POWERIC_ADDR, 0x20, 0x80);
#else
/* only CA57 ? */
writel(RST_CODE, RST_CA57RESCNT);
#endif
}
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