arch/arm/mach-rockchip/rk3036-board.c

   1 /*
   2  * (C) Copyright 2015 Rockchip Electronics Co., Ltd
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <clk.h>
   9 #include <dm.h>
  10 #include <ram.h>
  11 #include <asm/io.h>
  12 #include <asm/arch/clock.h>
  13 #include <asm/arch/periph.h>
  14 #include <asm/arch/grf_rk3036.h>
  15 #include <asm/arch/boot_mode.h>
  16 #include <asm/arch/sdram_rk3036.h>
  17 #include <asm/gpio.h>
  18 #include <dm/pinctrl.h>
  19
  20 DECLARE_GLOBAL_DATA_PTR;
  21
  22 #define GRF_BASE        0x20008000
  23
  24 static void setup_boot_mode(void)
  25 {
  26         struct rk3036_grf *const grf = (void *)GRF_BASE;
  27         int boot_mode = readl(&grf->os_reg[4]);
  28
  29         debug("boot mode %x.\n", boot_mode);
  30
  31         /* Clear boot mode */
  32         writel(BOOT_NORMAL, &grf->os_reg[4]);
  33
  34         switch (boot_mode) {
  35         case BOOT_FASTBOOT:
  36                 printf("enter fastboot!\n");
  37                 setenv("preboot", "setenv preboot; fastboot usb0");
  38                 break;
  39         case BOOT_UMS:
  40                 printf("enter UMS!\n");
  41                 setenv("preboot", "setenv preboot; ums mmc 0");
  42                 break;
  43         }
  44 }
  45
  46 __weak int rk_board_late_init(void)
  47 {
  48         return 0;
  49 }
  50
  51 int board_late_init(void)
  52 {
  53         setup_boot_mode();
  54
  55         return rk_board_late_init();
  56 }
  57
  58 int board_init(void)
  59 {
  60         return 0;
  61 }
  62
  63 #if !CONFIG_IS_ENABLED(RAM)
  64 /*
  65  * When CONFIG_RAM is enabled, the dram_init() function is implemented
  66  * in sdram_common.c.
  67  */
  68 int dram_init(void)
  69 {
  70         gd->ram_size = sdram_size();
  71
  72         return 0;
  73 }
  74 #endif
  75
  76 #ifndef CONFIG_SYS_DCACHE_OFF
  77 void enable_caches(void)
  78 {
  79         /* Enable D-cache. I-cache is already enabled in start.S */
  80         dcache_enable();
  81 }
  82 #endif
  83
  84 #if defined(CONFIG_USB_GADGET) && defined(CONFIG_USB_GADGET_DWC2_OTG)
  85 #include <usb.h>
  86 #include <usb/dwc2_udc.h>
  87
  88 static struct dwc2_plat_otg_data rk3036_otg_data = {
  89         .rx_fifo_sz     = 512,
  90         .np_tx_fifo_sz  = 16,
  91         .tx_fifo_sz     = 128,
  92 };
  93
  94 int board_usb_init(int index, enum usb_init_type init)
  95 {
  96         int node;
  97         const char *mode;
  98         bool matched = false;
  99         const void *blob = gd->fdt_blob;
 100
 101         /* find the usb_otg node */
 102         node = fdt_node_offset_by_compatible(blob, -1,
 103                                         "rockchip,rk3288-usb");
 104
 105         while (node > 0) {
 106                 mode = fdt_getprop(blob, node, "dr_mode", NULL);
 107                 if (mode && strcmp(mode, "otg") == 0) {
 108                         matched = true;
 109                         break;
 110                 }
 111
 112                 node = fdt_node_offset_by_compatible(blob, node,
 113                                         "rockchip,rk3288-usb");
 114         }
 115         if (!matched) {
 116                 debug("Not found usb_otg device\n");
 117                 return -ENODEV;
 118         }
 119         rk3036_otg_data.regs_otg = fdtdec_get_addr(blob, node, "reg");
 120
 121         return dwc2_udc_probe(&rk3036_otg_data);
 122 }
 123
 124 int board_usb_cleanup(int index, enum usb_init_type init)
 125 {
 126         return 0;
 127 }
 128 #endif