arch/arm/mach-rockchip/rk3188/rk3188.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2019 Rockchip Electronics Co., Ltd
   4  */
   5 #include <common.h>
   6 #include <dm.h>
   7 #include <hang.h>
   8 #include <syscon.h>
   9 #include <asm/io.h>
  10 #include <asm/arch-rockchip/bootrom.h>
  11 #include <asm/arch-rockchip/clock.h>
  12 #include <asm/arch-rockchip/grf_rk3188.h>
  13 #include <asm/arch-rockchip/hardware.h>
  14 #include <linux/err.h>
  15
  16 #define GRF_BASE        0x20008000
  17
  18 const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
  19         [BROM_BOOTSOURCE_EMMC] = "/dwmmc@1021c000",
  20         [BROM_BOOTSOURCE_SD] = "/dwmmc@10214000",
  21 };
  22
  23 #ifdef CONFIG_DEBUG_UART_BOARD_INIT
  24 void board_debug_uart_init(void)
  25 {
  26         /* Enable early UART on the RK3188 */
  27         struct rk3188_grf * const grf = (void *)GRF_BASE;
  28         enum {
  29                 GPIO1B1_SHIFT           = 2,
  30                 GPIO1B1_MASK            = 3,
  31                 GPIO1B1_GPIO            = 0,
  32                 GPIO1B1_UART2_SOUT,
  33                 GPIO1B1_JTAG_TDO,
  34
  35                 GPIO1B0_SHIFT           = 0,
  36                 GPIO1B0_MASK            = 3,
  37                 GPIO1B0_GPIO            = 0,
  38                 GPIO1B0_UART2_SIN,
  39                 GPIO1B0_JTAG_TDI,
  40         };
  41
  42         rk_clrsetreg(&grf->gpio1b_iomux,
  43                      GPIO1B1_MASK << GPIO1B1_SHIFT |
  44                      GPIO1B0_MASK << GPIO1B0_SHIFT,
  45                      GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT |
  46                      GPIO1B0_UART2_SIN << GPIO1B0_SHIFT);
  47 }
  48 #endif
  49
  50 #ifdef CONFIG_SPL_BUILD
  51 int arch_cpu_init(void)
  52 {
  53         struct rk3188_grf *grf;
  54
  55         grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
  56         if (IS_ERR(grf)) {
  57                 pr_err("grf syscon returned %ld\n", PTR_ERR(grf));
  58                 return 0;
  59         }
  60 #ifdef CONFIG_ROCKCHIP_USB_UART
  61         rk_clrsetreg(&grf->uoc0_con[0],
  62                      SIDDQ_MASK | UOC_DISABLE_MASK | COMMON_ON_N_MASK,
  63                      1 << SIDDQ_SHIFT | 1 << UOC_DISABLE_SHIFT |
  64                      1 << COMMON_ON_N_SHIFT);
  65         rk_clrsetreg(&grf->uoc0_con[2],
  66                      SOFT_CON_SEL_MASK, 1 << SOFT_CON_SEL_SHIFT);
  67         rk_clrsetreg(&grf->uoc0_con[3],
  68                      OPMODE_MASK | XCVRSELECT_MASK |
  69                      TERMSEL_FULLSPEED_MASK | SUSPENDN_MASK,
  70                      OPMODE_NODRIVING << OPMODE_SHIFT |
  71                      XCVRSELECT_FSTRANSC << XCVRSELECT_SHIFT |
  72                      1 << TERMSEL_FULLSPEED_SHIFT |
  73                      1 << SUSPENDN_SHIFT);
  74         rk_clrsetreg(&grf->uoc0_con[0],
  75                      BYPASSSEL_MASK | BYPASSDMEN_MASK,
  76                      1 << BYPASSSEL_SHIFT | 1 << BYPASSDMEN_SHIFT);
  77 #endif
  78
  79         /* enable noc remap to mimic legacy loaders */
  80         rk_clrsetreg(&grf->soc_con0,
  81                      NOC_REMAP_MASK << NOC_REMAP_SHIFT,
  82                      NOC_REMAP_MASK << NOC_REMAP_SHIFT);
  83
  84         return 0;
  85 }
  86 #endif
  87
  88 #ifdef CONFIG_SPL_BUILD
  89 static int setup_led(void)
  90 {
  91 #ifdef CONFIG_SPL_LED
  92         struct udevice *dev;
  93         char *led_name;
  94         int ret;
  95
  96         led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led");
  97         if (!led_name)
  98                 return 0;
  99         ret = led_get_by_label(led_name, &dev);
 100         if (ret) {
 101                 debug("%s: get=%d\n", __func__, ret);
 102                 return ret;
 103         }
 104         ret = led_set_on(dev, 1);
 105         if (ret)
 106                 return ret;
 107 #endif
 108
 109         return 0;
 110 }
 111
 112 void spl_board_init(void)
 113 {
 114         int ret;
 115
 116         ret = setup_led();
 117         if (ret) {
 118                 debug("LED ret=%d\n", ret);
 119                 hang();
 120         }
 121 }
 122 #endif