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 <init.h>
   9 #include <log.h>
  10 #include <syscon.h>
  11 #include <asm/io.h>
  12 #include <asm/arch-rockchip/bootrom.h>
  13 #include <asm/arch-rockchip/clock.h>
  14 #include <asm/arch-rockchip/grf_rk3188.h>
  15 #include <asm/arch-rockchip/hardware.h>
  16 #include <linux/err.h>
  17
  18 #define GRF_BASE        0x20008000
  19
  20 const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
  21         [BROM_BOOTSOURCE_EMMC] = "/dwmmc@1021c000",
  22         [BROM_BOOTSOURCE_SD] = "/dwmmc@10214000",
  23 };
  24
  25 #ifdef CONFIG_DEBUG_UART_BOARD_INIT
  26 void board_debug_uart_init(void)
  27 {
  28         /* Enable early UART on the RK3188 */
  29         struct rk3188_grf * const grf = (void *)GRF_BASE;
  30         enum {
  31                 GPIO1B1_SHIFT           = 2,
  32                 GPIO1B1_MASK            = 3,
  33                 GPIO1B1_GPIO            = 0,
  34                 GPIO1B1_UART2_SOUT,
  35                 GPIO1B1_JTAG_TDO,
  36
  37                 GPIO1B0_SHIFT           = 0,
  38                 GPIO1B0_MASK            = 3,
  39                 GPIO1B0_GPIO            = 0,
  40                 GPIO1B0_UART2_SIN,
  41                 GPIO1B0_JTAG_TDI,
  42         };
  43
  44         rk_clrsetreg(&grf->gpio1b_iomux,
  45                      GPIO1B1_MASK << GPIO1B1_SHIFT |
  46                      GPIO1B0_MASK << GPIO1B0_SHIFT,
  47                      GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT |
  48                      GPIO1B0_UART2_SIN << GPIO1B0_SHIFT);
  49 }
  50 #endif
  51
  52 #ifdef CONFIG_SPL_BUILD
  53 int arch_cpu_init(void)
  54 {
  55         struct rk3188_grf *grf;
  56
  57         grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
  58         if (IS_ERR(grf)) {
  59                 pr_err("grf syscon returned %ld\n", PTR_ERR(grf));
  60                 return 0;
  61         }
  62 #ifdef CONFIG_ROCKCHIP_USB_UART
  63         rk_clrsetreg(&grf->uoc0_con[0],
  64                      SIDDQ_MASK | UOC_DISABLE_MASK | COMMON_ON_N_MASK,
  65                      1 << SIDDQ_SHIFT | 1 << UOC_DISABLE_SHIFT |
  66                      1 << COMMON_ON_N_SHIFT);
  67         rk_clrsetreg(&grf->uoc0_con[2],
  68                      SOFT_CON_SEL_MASK, 1 << SOFT_CON_SEL_SHIFT);
  69         rk_clrsetreg(&grf->uoc0_con[3],
  70                      OPMODE_MASK | XCVRSELECT_MASK |
  71                      TERMSEL_FULLSPEED_MASK | SUSPENDN_MASK,
  72                      OPMODE_NODRIVING << OPMODE_SHIFT |
  73                      XCVRSELECT_FSTRANSC << XCVRSELECT_SHIFT |
  74                      1 << TERMSEL_FULLSPEED_SHIFT |
  75                      1 << SUSPENDN_SHIFT);
  76         rk_clrsetreg(&grf->uoc0_con[0],
  77                      BYPASSSEL_MASK | BYPASSDMEN_MASK,
  78                      1 << BYPASSSEL_SHIFT | 1 << BYPASSDMEN_SHIFT);
  79 #endif
  80
  81         /* enable noc remap to mimic legacy loaders */
  82         rk_clrsetreg(&grf->soc_con0,
  83                      NOC_REMAP_MASK << NOC_REMAP_SHIFT,
  84                      NOC_REMAP_MASK << NOC_REMAP_SHIFT);
  85
  86         return 0;
  87 }
  88 #endif
  89
  90 #ifdef CONFIG_SPL_BUILD
  91 static int setup_led(void)
  92 {
  93 #ifdef CONFIG_SPL_LED
  94         struct udevice *dev;
  95         char *led_name;
  96         int ret;
  97
  98         led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led");
  99         if (!led_name)
 100                 return 0;
 101         ret = led_get_by_label(led_name, &dev);
 102         if (ret) {
 103                 debug("%s: get=%d\n", __func__, ret);
 104                 return ret;
 105         }
 106         ret = led_set_on(dev, 1);
 107         if (ret)
 108                 return ret;
 109 #endif
 110
 111         return 0;
 112 }
 113
 114 void spl_board_init(void)
 115 {
 116         int ret;
 117
 118         ret = setup_led();
 119         if (ret) {
 120                 debug("LED ret=%d\n", ret);
 121                 hang();
 122         }
 123 }
 124 #endif