arch/arm/mach-rockchip/rk3288/rk3288.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2016 Rockchip Electronics Co., Ltd
   4  */
   5 #include <common.h>
   6 #include <dm.h>
   7 #include <env.h>
   8 #include <clk.h>
   9 #include <asm/armv7.h>
  10 #include <asm/io.h>
  11 #include <asm/arch-rockchip/bootrom.h>
  12 #include <asm/arch-rockchip/clock.h>
  13 #include <asm/arch-rockchip/cru_rk3288.h>
  14 #include <asm/arch-rockchip/hardware.h>
  15 #include <asm/arch-rockchip/grf_rk3288.h>
  16 #include <asm/arch-rockchip/pmu_rk3288.h>
  17 #include <asm/arch-rockchip/qos_rk3288.h>
  18 #include <asm/arch-rockchip/sdram_common.h>
  19
  20 DECLARE_GLOBAL_DATA_PTR;
  21
  22 #define GRF_BASE        0xff770000
  23
  24 const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
  25         [BROM_BOOTSOURCE_EMMC] = "dwmmc@ff0f0000",
  26         [BROM_BOOTSOURCE_SD] = "dwmmc@ff0c0000",
  27 };
  28
  29 #ifdef CONFIG_SPL_BUILD
  30 static void configure_l2ctlr(void)
  31 {
  32         u32 l2ctlr;
  33
  34         l2ctlr = read_l2ctlr();
  35         l2ctlr &= 0xfffc0000; /* clear bit0~bit17 */
  36
  37         /*
  38          * Data RAM write latency: 2 cycles
  39          * Data RAM read latency: 2 cycles
  40          * Data RAM setup latency: 1 cycle
  41          * Tag RAM write latency: 1 cycle
  42          * Tag RAM read latency: 1 cycle
  43          * Tag RAM setup latency: 1 cycle
  44          */
  45         l2ctlr |= (1 << 3 | 1 << 0);
  46         write_l2ctlr(l2ctlr);
  47 }
  48 #endif
  49
  50 int rk3288_qos_init(void)
  51 {
  52         int val = 2 << PRIORITY_HIGH_SHIFT | 2 << PRIORITY_LOW_SHIFT;
  53         /* set vop qos to higher priority */
  54         writel(val, CPU_AXI_QOS_PRIORITY + VIO0_VOP_QOS);
  55         writel(val, CPU_AXI_QOS_PRIORITY + VIO1_VOP_QOS);
  56
  57         if (!fdt_node_check_compatible(gd->fdt_blob, 0,
  58                                        "rockchip,rk3288-tinker")) {
  59                 /* set isp qos to higher priority */
  60                 writel(val, CPU_AXI_QOS_PRIORITY + VIO1_ISP_R_QOS);
  61                 writel(val, CPU_AXI_QOS_PRIORITY + VIO1_ISP_W0_QOS);
  62                 writel(val, CPU_AXI_QOS_PRIORITY + VIO1_ISP_W1_QOS);
  63         }
  64
  65         return 0;
  66 }
  67
  68 int arch_cpu_init(void)
  69 {
  70 #ifdef CONFIG_SPL_BUILD
  71         configure_l2ctlr();
  72 #else
  73         /* We do some SoC one time setting here. */
  74         struct rk3288_grf * const grf = (void *)GRF_BASE;
  75
  76         /* Use rkpwm by default */
  77         rk_setreg(&grf->soc_con2, 1 << 0);
  78
  79         /*
  80          * Disable JTAG on sdmmc0 IO. The SDMMC won't work until this bit is
  81          * cleared
  82          */
  83         rk_clrreg(&grf->soc_con0, 1 << 12);
  84
  85         rk3288_qos_init();
  86 #endif
  87
  88         return 0;
  89 }
  90
  91 #ifdef CONFIG_DEBUG_UART_BOARD_INIT
  92 void board_debug_uart_init(void)
  93 {
  94         /* Enable early UART on the RK3288 */
  95         struct rk3288_grf * const grf = (void *)GRF_BASE;
  96
  97         rk_clrsetreg(&grf->gpio7ch_iomux, GPIO7C7_MASK << GPIO7C7_SHIFT |
  98                      GPIO7C6_MASK << GPIO7C6_SHIFT,
  99                      GPIO7C7_UART2DBG_SOUT << GPIO7C7_SHIFT |
 100                      GPIO7C6_UART2DBG_SIN << GPIO7C6_SHIFT);
 101 }
 102 #endif
 103
 104 static void rk3288_detect_reset_reason(void)
 105 {
 106         struct rk3288_cru *cru = rockchip_get_cru();
 107         const char *reason;
 108
 109         if (IS_ERR(cru))
 110                 return;
 111
 112         switch (cru->cru_glb_rst_st) {
 113         case GLB_POR_RST:
 114                 reason = "POR";
 115                 break;
 116         case FST_GLB_RST_ST:
 117         case SND_GLB_RST_ST:
 118                 reason = "RST";
 119                 break;
 120         case FST_GLB_TSADC_RST_ST:
 121         case SND_GLB_TSADC_RST_ST:
 122                 reason = "THERMAL";
 123                 break;
 124         case FST_GLB_WDT_RST_ST:
 125         case SND_GLB_WDT_RST_ST:
 126                 reason = "WDOG";
 127                 break;
 128         default:
 129                 reason = "unknown reset";
 130         }
 131
 132         env_set("reset_reason", reason);
 133
 134         /*
 135          * Clear cru_glb_rst_st, so we can determine the last reset cause
 136          * for following resets.
 137          */
 138         rk_clrreg(&cru->cru_glb_rst_st, GLB_RST_ST_MASK);
 139 }
 140
 141 __weak int rk3288_board_late_init(void)
 142 {
 143         return 0;
 144 }
 145
 146 int rk_board_late_init(void)
 147 {
 148         rk3288_detect_reset_reason();
 149
 150         return rk3288_board_late_init();
 151 }
 152
 153 static int do_clock(cmd_tbl_t *cmdtp, int flag, int argc,
 154                        char * const argv[])
 155 {
 156         static const struct {
 157                 char *name;
 158                 int id;
 159         } clks[] = {
 160                 { "osc", CLK_OSC },
 161                 { "apll", CLK_ARM },
 162                 { "dpll", CLK_DDR },
 163                 { "cpll", CLK_CODEC },
 164                 { "gpll", CLK_GENERAL },
 165 #ifdef CONFIG_ROCKCHIP_RK3036
 166                 { "mpll", CLK_NEW },
 167 #else
 168                 { "npll", CLK_NEW },
 169 #endif
 170         };
 171         int ret, i;
 172         struct udevice *dev;
 173
 174         ret = rockchip_get_clk(&dev);
 175         if (ret) {
 176                 printf("clk-uclass not found\n");
 177                 return 0;
 178         }
 179
 180         for (i = 0; i < ARRAY_SIZE(clks); i++) {
 181                 struct clk clk;
 182                 ulong rate;
 183
 184                 clk.id = clks[i].id;
 185                 ret = clk_request(dev, &clk);
 186                 if (ret < 0)
 187                         continue;
 188
 189                 rate = clk_get_rate(&clk);
 190                 printf("%s: %lu\n", clks[i].name, rate);
 191
 192                 clk_free(&clk);
 193         }
 194
 195         return 0;
 196 }
 197
 198 U_BOOT_CMD(
 199         clock, 2, 1, do_clock,
 200         "display information about clocks",
 201         ""
 202 );