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/*
* This file is part of the coreboot project.
*
* Copyright 2014 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <arch/mmu.h>
#include <boardid.h>
#include <boot/coreboot_tables.h>
#include <cbmem.h>
#include <delay.h>
#include <device/device.h>
#include <elog.h>
#include <memrange.h>
#include <soc/addressmap.h>
#include <soc/clk_rst.h>
#include <soc/clock.h>
#include <soc/funitcfg.h>
#include <soc/nvidia/tegra/i2c.h>
#include <soc/padconfig.h>
#include <vendorcode/google/chromeos/chromeos.h>
#if IS_ENABLED(CONFIG_CHROMEOS)
#include <vboot_struct.h>
#include <vendorcode/google/chromeos/vboot_handoff.h>
#include <vendorcode/google/chromeos/vboot2/misc.h>
#endif
#include "gpio.h"
#include "pmic.h"
static const struct pad_config mmcpads[] = {
/* MMC4 (eMMC) */
PAD_CFG_SFIO(SDMMC4_CLK, PINMUX_INPUT_ENABLE|PINMUX_PULL_DOWN, SDMMC4),
PAD_CFG_SFIO(SDMMC4_CMD, PINMUX_INPUT_ENABLE|PINMUX_PULL_UP, SDMMC4),
PAD_CFG_SFIO(SDMMC4_DAT0, PINMUX_INPUT_ENABLE|PINMUX_PULL_UP, SDMMC4),
PAD_CFG_SFIO(SDMMC4_DAT1, PINMUX_INPUT_ENABLE|PINMUX_PULL_UP, SDMMC4),
PAD_CFG_SFIO(SDMMC4_DAT2, PINMUX_INPUT_ENABLE|PINMUX_PULL_UP, SDMMC4),
PAD_CFG_SFIO(SDMMC4_DAT3, PINMUX_INPUT_ENABLE|PINMUX_PULL_UP, SDMMC4),
PAD_CFG_SFIO(SDMMC4_DAT4, PINMUX_INPUT_ENABLE|PINMUX_PULL_UP, SDMMC4),
PAD_CFG_SFIO(SDMMC4_DAT5, PINMUX_INPUT_ENABLE|PINMUX_PULL_UP, SDMMC4),
PAD_CFG_SFIO(SDMMC4_DAT6, PINMUX_INPUT_ENABLE|PINMUX_PULL_UP, SDMMC4),
PAD_CFG_SFIO(SDMMC4_DAT7, PINMUX_INPUT_ENABLE|PINMUX_PULL_UP, SDMMC4),
};
static const struct pad_config audio_codec_pads[] = {
/* H1 is CODEC_RST_L and R2(ROW2) is AUDIO_ENABLE */
PAD_CFG_GPIO_OUT1(GPIO_PH1, PINMUX_PULL_DOWN),
PAD_CFG_GPIO_OUT1(KB_ROW2, PINMUX_PULL_DOWN),
};
static const struct funit_cfg funits[] = {
/* MMC on SDMMC4 controller at 48MHz. */
FUNIT_CFG(SDMMC4, PLLP, 48000, mmcpads, ARRAY_SIZE(mmcpads)),
/* I2C6 for audio, temp sensor, etc. Enable codec via GPIOs/muxes */
FUNIT_CFG(I2C6, PLLP, 400, audio_codec_pads, ARRAY_SIZE(audio_codec_pads)),
FUNIT_CFG_USB(USBD),
};
/* HACK: For proto boards before proto3, we want to disable ec sw sync */
static void fix_ec_sw_sync(void)
{
#if IS_ENABLED(CONFIG_CHROMEOS)
struct vboot_handoff *vh;
if (board_id() >= BOARD_ID_PROTO_3)
return;
vh = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
if (vh == NULL) {
printk(BIOS_ERR, "No vboot handoff struct found\n");
return;
}
VbSharedDataHeader *vb_sd = (VbSharedDataHeader *)vh->shared_data;
vb_sd->flags &= ~VBSD_EC_SOFTWARE_SYNC;
#endif
}
static const struct pad_config lcd_gpio_padcfgs[] = {
/* LCD_EN */
PAD_CFG_GPIO_OUT0(GPIO_PH5, PINMUX_PULL_UP),
/* LCD_RST_L */
PAD_CFG_GPIO_OUT0(GPIO_PH3, PINMUX_PULL_UP),
/* EN_VDD_LCD */
PAD_CFG_GPIO_OUT0(GPIO_PBB6, PINMUX_PULL_NONE),
/* EN_VDD18_LCD */
PAD_CFG_GPIO_OUT0(DVFS_PWM, PINMUX_PULL_DOWN),
};
static void configure_display_clocks(void)
{
u32 lclks = CLK_L_HOST1X | CLK_L_DISP1; /* dc */
u32 hclks = CLK_H_MIPI_CAL | CLK_H_DSI; /* mipi phy, mipi-dsi a */
u32 uclks = CLK_U_DSIB; /* mipi-dsi b */
u32 xclks = CLK_X_CLK72MHZ; /* clk src of mipi_cal */
clock_enable_clear_reset(lclks, hclks, uclks, 0, 0, xclks);
/* Give clocks time to stabilize. */
udelay(IO_STABILIZATION_DELAY);
}
static int enable_lcd_vdd(void)
{
uint8_t data;
/* Set 1.20V to power AVDD_DSI_CSI */
pmic_write_reg(I2CPWR_BUS, TI65913_LDO5_VOLTAGE,
VSEL_1200, 1);
pmic_write_reg(I2CPWR_BUS, TI65913_LDO5_CTRL,
TI65913_MODE_ACTIVE_ON, 1);
/* wait for 100ms */
mdelay(100);
/*
* Enable VDD_LCD
*
* Use different GPIO based on board id
*/
switch (board_id()) {
case BOARD_ID_PROTO_0:
/* Select PMIC GPIO_6's primary function */
pmic_read_reg(I2CPWR_BUS, TI65913_PAD2, &data);
pmic_write_reg(I2CPWR_BUS, TI65913_PAD2,
PAD2_GPIO_6_PRIMARY(data), 0);
/* Set PMIC_GPIO_6 as output */
pmic_read_reg(I2CPWR_BUS, TI65913_GPIO_DATA_DIR, &data);
pmic_write_reg(I2CPWR_BUS, TI65913_GPIO_DATA_DIR,
TI65913_GPIO_6_OUTPUT, 0);
/* Set PMIC_GPIO_6 output high */
pmic_read_reg(I2CPWR_BUS, TI65913_GPIO_DATA_OUT, &data);
pmic_write_reg(I2CPWR_BUS, TI65913_GPIO_DATA_OUT,
TI65913_GPIO_6_HIGH, 1);
break;
case BOARD_ID_PROTO_1:
case BOARD_ID_PROTO_3:
gpio_set(EN_VDD_LCD, 1);
break;
default: /* unknown board */
return -1;
}
/* wait for 2ms */
mdelay(2);
/* Enable PP1800_LCDIO to panel */
gpio_set(EN_VDD18_LCD, 1);
/* wait for 1ms */
mdelay(1);
/* Set panel EN and RST signals */
gpio_set(LCD_EN, 1); /* enable */
/* wait for min 10ms */
mdelay(10);
gpio_set(LCD_RST_L, 1); /* clear reset */
/* wait for min 3ms */
mdelay(3);
return 0;
}
static int configure_display_blocks(void)
{
/* set and enable panel related vdd */
if (enable_lcd_vdd())
return -1;
/* enable display related clocks */
configure_display_clocks();
return 0;
}
/* Audio init: clocks and enables/resets */
static void setup_audio(void)
{
/* External peripheral 1: audio codec (RT5677) using 12MHz CLK1 */
clock_configure_source(extperiph1, CLK_M, 12000);
/*
* We need 1.5MHz for I2S1. So, we use CLK_M. CLK_DIVIDER macro
* returns a divisor (0xe) a little bit off from the ideal value (0xd),
* but it's good enough for beeps.
*/
clock_configure_source(i2s1, CLK_M, 1500);
clock_external_output(1); /* For external RT5677 audio codec. */
/*
* Confirmed by NVIDIA hardware team, we need to take ALL audio devices
* connected to AHUB (AUDIO, APBIF, I2S, DAM, AMX, ADX, SPDIF, AFC) out
* of reset and clock-enabled, otherwise reading AHUB devices (in our
* case, I2S/APBIF/AUDIO<XBAR>) will hang.
*/
clock_enable_audio();
}
static void mainboard_init(device_t dev)
{
soc_configure_funits(funits, ARRAY_SIZE(funits));
/* I2C6 bus (audio, etc.) */
soc_configure_i2c6pad();
i2c_init(I2C6_BUS);
setup_audio();
elog_init();
elog_add_boot_reason();
fix_ec_sw_sync();
/* configure panel gpio pads */
soc_configure_pads(lcd_gpio_padcfgs, ARRAY_SIZE(lcd_gpio_padcfgs));
/* if panel needs to bringup */
if (!vboot_skip_display_init())
configure_display_blocks();
}
static void mainboard_enable(device_t dev)
{
dev->ops->init = &mainboard_init;
}
struct chip_operations mainboard_ops = {
.name = "rush_ryu",
.enable_dev = mainboard_enable,
};
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