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