LXR uboot/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 */
  25void 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
  37int 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
  47int 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 */
  68static 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 */
  83static 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
 118int 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}
 130