1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * board/renesas/stout/stout.c 4 * This file is Stout board support. 5 * 6 * Copyright (C) 2015 Renesas Electronics Europe GmbH 7 * Copyright (C) 2015 Renesas Electronics Corporation 8 * Copyright (C) 2015 Cogent Embedded, Inc. 9 */ 10 11 #include <common.h> 12 #include <malloc.h> 13 #include <netdev.h> 14 #include <dm.h> 15 #include <dm/platform_data/serial_sh.h> 16 #include <environment.h> 17 #include <asm/processor.h> 18 #include <asm/mach-types.h> 19 #include <asm/io.h> 20 #include <linux/errno.h> 21 #include <asm/arch/sys_proto.h> 22 #include <asm/gpio.h> 23 #include <asm/arch/rmobile.h> 24 #include <asm/arch/rcar-mstp.h> 25 #include <asm/arch/mmc.h> 26 #include <asm/arch/sh_sdhi.h> 27 #include <miiphy.h> 28 #include <i2c.h> 29 #include <mmc.h> 30 #include "qos.h" 31 #include "cpld.h" 32 33 DECLARE_GLOBAL_DATA_PTR; 34 35 #define CLK2MHZ(clk) (clk / 1000 / 1000) 36 void s_init(void) 37 { 38 struct rcar_rwdt *rwdt = (struct rcar_rwdt *)RWDT_BASE; 39 struct rcar_swdt *swdt = (struct rcar_swdt *)SWDT_BASE; 40 41 /* Watchdog init */ 42 writel(0xA5A5A500, &rwdt->rwtcsra); 43 writel(0xA5A5A500, &swdt->swtcsra); 44 45 /* CPU frequency setting. Set to 1.4GHz */ 46 if (rmobile_get_cpu_rev_integer() >= R8A7790_CUT_ES2X) { 47 u32 stat = 0; 48 u32 stc = ((1400 / CLK2MHZ(CONFIG_SYS_CLK_FREQ)) - 1) 49 << PLL0_STC_BIT; 50 clrsetbits_le32(PLL0CR, PLL0_STC_MASK, stc); 51 52 do { 53 stat = readl(PLLECR) & PLL0ST; 54 } while (stat == 0x0); 55 } 56 57 /* QoS(Quality-of-Service) Init */ 58 qos_init(); 59 } 60 61 #define TMU0_MSTP125 BIT(25) 62 63 #define SD2CKCR 0xE6150078 64 #define SD2_97500KHZ 0x7 65 66 int board_early_init_f(void) 67 { 68 /* TMU0 */ 69 mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125); 70 71 /* 72 * SD0 clock is set to 97.5MHz by default. 73 * Set SD2 to the 97.5MHz as well. 74 */ 75 writel(SD2_97500KHZ, SD2CKCR); 76 77 return 0; 78 } 79 80 #define ETHERNET_PHY_RESET 123 /* GPIO 3 31 */ 81 82 int board_init(void) 83 { 84 /* adress of boot parameters */ 85 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; 86 87 cpld_init(); 88 89 /* Force ethernet PHY out of reset */ 90 gpio_request(ETHERNET_PHY_RESET, "phy_reset"); 91 gpio_direction_output(ETHERNET_PHY_RESET, 0); 92 mdelay(20); 93 gpio_direction_output(ETHERNET_PHY_RESET, 1); 94 95 return 0; 96 } 97 98 int dram_init(void) 99 { 100 if (fdtdec_setup_memory_size() != 0) 101 return -EINVAL; 102 103 return 0; 104 } 105 106 int dram_init_banksize(void) 107 { 108 fdtdec_setup_memory_banksize(); 109 110 return 0; 111 } 112 113 /* Stout has KSZ8041NL/RNL */ 114 #define PHY_CONTROL1 0x1E 115 #define PHY_LED_MODE 0xC0000 116 #define PHY_LED_MODE_ACK 0x4000 117 int board_phy_config(struct phy_device *phydev) 118 { 119 int ret = phy_read(phydev, MDIO_DEVAD_NONE, PHY_CONTROL1); 120 ret &= ~PHY_LED_MODE; 121 ret |= PHY_LED_MODE_ACK; 122 ret = phy_write(phydev, MDIO_DEVAD_NONE, PHY_CONTROL1, (u16)ret); 123 124 return 0; 125 } 126 127 enum env_location env_get_location(enum env_operation op, int prio) 128 { 129 const u32 load_magic = 0xb33fc0de; 130 131 /* Block environment access if loaded using JTAG */ 132 if ((readl(CONFIG_SPL_TEXT_BASE + 0x24) == load_magic) && 133 (op != ENVOP_INIT)) 134 return ENVL_UNKNOWN; 135 136 if (prio) 137 return ENVL_UNKNOWN; 138 139 return ENVL_SPI_FLASH; 140 } 141