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