mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-02 01:19:49 +00:00
7cfde8117f
We need to turn on all audio-related clocks for the Chrome OS kernel to boot. Otherwise it will hang when trying to enable audio. Also for Linux set up graphics driver video protection. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
128 lines
2.7 KiB
C
128 lines
2.7 KiB
C
/*
|
|
* (C) Copyright 2014
|
|
* NVIDIA Corporation <www.nvidia.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <errno.h>
|
|
#include <asm/gpio.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/pinmux.h>
|
|
#include <asm/arch/clock.h>
|
|
#include <asm/arch/mc.h>
|
|
#include <asm/arch-tegra/clk_rst.h>
|
|
#include <asm/arch-tegra/pmc.h>
|
|
#include <power/as3722.h>
|
|
#include <power/pmic.h>
|
|
#include "pinmux-config-nyan-big.h"
|
|
|
|
/*
|
|
* Routine: pinmux_init
|
|
* Description: Do individual peripheral pinmux configs
|
|
*/
|
|
void pinmux_init(void)
|
|
{
|
|
gpio_config_table(nyan_big_gpio_inits,
|
|
ARRAY_SIZE(nyan_big_gpio_inits));
|
|
|
|
pinmux_config_pingrp_table(nyan_big_pingrps,
|
|
ARRAY_SIZE(nyan_big_pingrps));
|
|
|
|
pinmux_config_drvgrp_table(nyan_big_drvgrps,
|
|
ARRAY_SIZE(nyan_big_drvgrps));
|
|
}
|
|
|
|
int tegra_board_id(void)
|
|
{
|
|
static const int vector[] = {GPIO_PQ3, GPIO_PT1, GPIO_PX1,
|
|
GPIO_PX4, -1};
|
|
|
|
gpio_claim_vector(vector, "board_id%d");
|
|
return gpio_get_values_as_int(vector);
|
|
}
|
|
|
|
int tegra_lcd_pmic_init(int board_id)
|
|
{
|
|
struct udevice *pmic;
|
|
int ret;
|
|
|
|
ret = as3722_get(&pmic);
|
|
if (ret)
|
|
return -ENOENT;
|
|
|
|
if (board_id == 0)
|
|
as3722_write(pmic, 0x00, 0x3c);
|
|
else
|
|
as3722_write(pmic, 0x00, 0x50);
|
|
as3722_write(pmic, 0x12, 0x10);
|
|
as3722_write(pmic, 0x0c, 0x07);
|
|
as3722_write(pmic, 0x20, 0x10);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Setup required information for Linux kernel */
|
|
static void setup_kernel_info(void)
|
|
{
|
|
struct mc_ctlr *mc = (void *)NV_PA_MC_BASE;
|
|
|
|
/* The kernel graphics driver needs this region locked down */
|
|
writel(0, &mc->mc_video_protect_bom);
|
|
writel(0, &mc->mc_video_protect_size_mb);
|
|
writel(1, &mc->mc_video_protect_reg_ctrl);
|
|
}
|
|
|
|
/*
|
|
* We need to take ALL audio devices conntected to AHUB (AUDIO, APBIF,
|
|
* I2S, DAM, AMX, ADX, SPDIF, AFC) out of reset and enable the clocks.
|
|
* Otherwise reading AHUB devices will hang when the kernel boots.
|
|
*/
|
|
static void enable_required_clocks(void)
|
|
{
|
|
static enum periph_id ids[] = {
|
|
PERIPH_ID_I2S0,
|
|
PERIPH_ID_I2S1,
|
|
PERIPH_ID_I2S2,
|
|
PERIPH_ID_I2S3,
|
|
PERIPH_ID_I2S4,
|
|
PERIPH_ID_AUDIO,
|
|
PERIPH_ID_APBIF,
|
|
PERIPH_ID_DAM0,
|
|
PERIPH_ID_DAM1,
|
|
PERIPH_ID_DAM2,
|
|
PERIPH_ID_AMX0,
|
|
PERIPH_ID_AMX1,
|
|
PERIPH_ID_ADX0,
|
|
PERIPH_ID_ADX1,
|
|
PERIPH_ID_SPDIF,
|
|
PERIPH_ID_AFC0,
|
|
PERIPH_ID_AFC1,
|
|
PERIPH_ID_AFC2,
|
|
PERIPH_ID_AFC3,
|
|
PERIPH_ID_AFC4,
|
|
PERIPH_ID_AFC5,
|
|
PERIPH_ID_EXTPERIPH1
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ids); i++)
|
|
clock_enable(ids[i]);
|
|
udelay(2);
|
|
for (i = 0; i < ARRAY_SIZE(ids); i++)
|
|
reset_set_enable(ids[i], 0);
|
|
}
|
|
|
|
int nvidia_board_init(void)
|
|
{
|
|
clock_start_periph_pll(PERIPH_ID_EXTPERIPH1, CLOCK_ID_OSC, 12000000);
|
|
clock_start_periph_pll(PERIPH_ID_I2S1, CLOCK_ID_OSC, 1500000);
|
|
|
|
/* For external MAX98090 audio codec */
|
|
clock_external_output(1);
|
|
setup_kernel_info();
|
|
enable_required_clocks();
|
|
|
|
return 0;
|
|
}
|