board/nvidia/nyan-big/nyan-big.c

   1 /*
   2  * (C) Copyright 2014
   3  * NVIDIA Corporation <www.nvidia.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <errno.h>
  10 #include <asm/gpio.h>
  11 #include <asm/io.h>
  12 #include <asm/arch/pinmux.h>
  13 #include <asm/arch/clock.h>
  14 #include <asm/arch/mc.h>
  15 #include <asm/arch-tegra/clk_rst.h>
  16 #include <asm/arch-tegra/pmc.h>
  17 #include <power/as3722.h>
  18 #include <power/pmic.h>
  19 #include "pinmux-config-nyan-big.h"
  20
  21 /*
  22  * Routine: pinmux_init
  23  * Description: Do individual peripheral pinmux configs
  24  */
  25 void pinmux_init(void)
  26 {
  27         gpio_config_table(nyan_big_gpio_inits,
  28                           ARRAY_SIZE(nyan_big_gpio_inits));
  29
  30         pinmux_config_pingrp_table(nyan_big_pingrps,
  31                                    ARRAY_SIZE(nyan_big_pingrps));
  32
  33         pinmux_config_drvgrp_table(nyan_big_drvgrps,
  34                                    ARRAY_SIZE(nyan_big_drvgrps));
  35 }
  36
  37 int tegra_board_id(void)
  38 {
  39         static const int vector[] = {TEGRA_GPIO(Q, 3), TEGRA_GPIO(T, 1),
  40                                         TEGRA_GPIO(X, 1), TEGRA_GPIO(X, 4),
  41                                         -1};
  42
  43         gpio_claim_vector(vector, "board_id%d");
  44         return gpio_get_values_as_int(vector);
  45 }
  46
  47 int tegra_lcd_pmic_init(int board_id)
  48 {
  49         struct udevice *pmic;
  50         int ret;
  51
  52         ret = as3722_get(&pmic);
  53         if (ret)
  54                 return -ENOENT;
  55
  56         if (board_id == 0)
  57                 as3722_write(pmic, 0x00, 0x3c);
  58         else
  59                 as3722_write(pmic, 0x00, 0x50);
  60         as3722_write(pmic, 0x12, 0x10);
  61         as3722_write(pmic, 0x0c, 0x07);
  62         as3722_write(pmic, 0x20, 0x10);
  63
  64         return 0;
  65 }
  66
  67 /* Setup required information for Linux kernel */
  68 static void setup_kernel_info(void)
  69 {
  70         struct mc_ctlr *mc = (void *)NV_PA_MC_BASE;
  71
  72         /* The kernel graphics driver needs this region locked down */
  73         writel(0, &mc->mc_video_protect_bom);
  74         writel(0, &mc->mc_video_protect_size_mb);
  75         writel(1, &mc->mc_video_protect_reg_ctrl);
  76 }
  77
  78 /*
  79  * We need to take ALL audio devices conntected to AHUB (AUDIO, APBIF,
  80  * I2S, DAM, AMX, ADX, SPDIF, AFC) out of reset and enable the clocks.
  81  * Otherwise reading AHUB devices will hang when the kernel boots.
  82  */
  83 static void enable_required_clocks(void)
  84 {
  85         static enum periph_id ids[] = {
  86                 PERIPH_ID_I2S0,
  87                 PERIPH_ID_I2S1,
  88                 PERIPH_ID_I2S2,
  89                 PERIPH_ID_I2S3,
  90                 PERIPH_ID_I2S4,
  91                 PERIPH_ID_AUDIO,
  92                 PERIPH_ID_APBIF,
  93                 PERIPH_ID_DAM0,
  94                 PERIPH_ID_DAM1,
  95                 PERIPH_ID_DAM2,
  96                 PERIPH_ID_AMX0,
  97                 PERIPH_ID_AMX1,
  98                 PERIPH_ID_ADX0,
  99                 PERIPH_ID_ADX1,
 100                 PERIPH_ID_SPDIF,
 101                 PERIPH_ID_AFC0,
 102                 PERIPH_ID_AFC1,
 103                 PERIPH_ID_AFC2,
 104                 PERIPH_ID_AFC3,
 105                 PERIPH_ID_AFC4,
 106                 PERIPH_ID_AFC5,
 107                 PERIPH_ID_EXTPERIPH1
 108         };
 109         int i;
 110
 111         for (i = 0; i < ARRAY_SIZE(ids); i++)
 112                 clock_enable(ids[i]);
 113         udelay(2);
 114         for (i = 0; i < ARRAY_SIZE(ids); i++)
 115                 reset_set_enable(ids[i], 0);
 116 }
 117
 118 int nvidia_board_init(void)
 119 {
 120         clock_start_periph_pll(PERIPH_ID_EXTPERIPH1, CLOCK_ID_OSC, 12000000);
 121         clock_start_periph_pll(PERIPH_ID_I2S1, CLOCK_ID_OSC, 1500000);
 122
 123         /* For external MAX98090 audio codec */
 124         clock_external_output(1);
 125         setup_kernel_info();
 126         enable_required_clocks();
 127
 128         return 0;
 129 }