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/*
* This file is part of the coreboot project.
*
* Copyright 2014 Rockchip 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/cache.h>
#include <arch/io.h>
#include <boot/coreboot_tables.h>
#include <console/console.h>
#include <delay.h>
#include <device/device.h>
#include <device/i2c.h>
#include <edid.h>
#include <elog.h>
#include <gpio.h>
#include <soc/display.h>
#include <soc/grf.h>
#include <soc/soc.h>
#include <soc/pmu.h>
#include <soc/clock.h>
#include <soc/rk808.h>
#include <soc/spi.h>
#include <soc/i2c.h>
#include <symbols.h>
#include <vbe.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include "board.h"
static void configure_usb(void)
{
gpio_output(GPIO(0, B, 3), 1); /* HOST1_PWR_EN */
gpio_output(GPIO(0, B, 4), 1); /* USBOTG_PWREN_H */
switch (board_id()) {
case 0:
gpio_output(GPIO(7, B, 3), 1); /* 5V_DRV */
break;
case 1:
break; /* 5V_DRV moved to EC in rev2 */
default:
gpio_output(GPIO(7, C, 5), 1); /* 5V_DRV, again */
break;
}
}
static void configure_sdmmc(void)
{
writel(IOMUX_SDMMC0, &rk3288_grf->iomux_sdmmc0);
/* use sdmmc0 io, disable JTAG function */
writel(RK_CLRBITS(1 << 12), &rk3288_grf->soc_con0);
/* Note: these power rail definitions are copied in romstage.c */
switch (board_id()) {
case 0:
rk808_configure_ldo(8, 3300); /* VCCIO_SD */
gpio_output(GPIO(7, C, 5), 1); /* SD_EN */
break;
default:
rk808_configure_ldo(4, 3300); /* VCCIO_SD */
rk808_configure_ldo(5, 3300); /* VCC33_SD */
break;
}
gpio_input(GPIO(7, A, 5)); /* SD_DET */
}
static void configure_emmc(void)
{
writel(IOMUX_EMMCDATA, &rk3288_grf->iomux_emmcdata);
writel(IOMUX_EMMCPWREN, &rk3288_grf->iomux_emmcpwren);
writel(IOMUX_EMMCCMD, &rk3288_grf->iomux_emmccmd);
switch (board_id()) {
case 0:
case 1:
/*
* Use a pullup instead of a drive since the output is 3.3V and
* really should be 1.8V (oops). The external pulldown will help
* bring the voltage down if we only drive with a pullup here.
*/
gpio_input_pullup(GPIO(7, B, 4)); /* EMMC_RST_L */
break;
default:
gpio_output(GPIO(2, B, 1), 1); /* EMMC_RST_L */
break;
}
}
static void configure_codec(void)
{
writel(IOMUX_I2C2, &rk3288_grf->iomux_i2c2); /* CODEC I2C */
i2c_init(2, 400*KHz); /* CODEC I2C */
writel(IOMUX_I2S, &rk3288_grf->iomux_i2s);
writel(IOMUX_I2SCLK, &rk3288_grf->iomux_i2sclk);
switch (board_id()) {
case 0:
rk808_configure_ldo(5, 1800); /* VCC18_CODEC */
break;
default:
rk808_configure_ldo(6, 1800); /* VCC18_CODEC */
break;
}
/* AUDIO IO domain 1.8V voltage selection */
writel(RK_SETBITS(1 << 6), &rk3288_grf->io_vsel);
rkclk_configure_i2s(12288000);
}
static void configure_vop(void)
{
writel(IOMUX_LCDC, &rk3288_grf->iomux_lcdc);
/* lcdc(vop) iodomain select 1.8V */
writel(RK_SETBITS(1 << 0), &rk3288_grf->io_vsel);
switch (board_id()) {
case 0:
rk808_configure_ldo(4, 1800); /* VCC18_LCD */
rk808_configure_ldo(6, 1000); /* VCC10_LCD */
gpio_output(GPIO(7, B, 7), 1); /* LCD_EN */
break;
case 1:
case 2:
rk808_configure_switch(2, 1); /* VCC18_LCD */
rk808_configure_ldo(7, 2500); /* VCC10_LCD_PWREN_H */
rk808_configure_switch(1, 1); /* VCC33_LCD */
break;
default:
gpio_output(GPIO(2, B, 5), 1); /* AVDD_1V8_DISP_EN */
rk808_configure_ldo(7, 2500); /* VCC10_LCD_PWREN_H */
rk808_configure_switch(1, 1); /* VCC33_LCD */
gpio_output(GPIO(7, B, 6), 1); /* LCD_EN */
/* enable edp HPD */
gpio_input_pulldown(GPIO(7, B, 3));
writel(IOMUX_EDP_HOTPLUG, &rk3288_grf->iomux_edp_hotplug);
break;
}
}
static void mainboard_init(device_t dev)
{
gpio_output(GPIO_RESET, 0);
configure_usb();
configure_sdmmc();
configure_emmc();
configure_codec();
configure_vop();
elog_init();
elog_add_boot_reason();
}
static void mainboard_enable(device_t dev)
{
dev->ops->init = &mainboard_init;
}
struct chip_operations mainboard_ops = {
.enable_dev = mainboard_enable,
};
void lb_board(struct lb_header *header)
{
struct lb_range *dma;
dma = (struct lb_range *)lb_new_record(header);
dma->tag = LB_TAB_DMA;
dma->size = sizeof(*dma);
dma->range_start = (uintptr_t)_dma_coherent;
dma->range_size = _dma_coherent_size;
}
void mainboard_power_on_backlight(void)
{
switch (board_id()) {
case 0:
case 1:
case 2:
gpio_output(GPIO_BACKLIGHT, 0); /* BL_EN */
gpio_output(GPIO(7, A, 2), 1); /* LCD_BL */
mdelay(10);
gpio_output(GPIO_BACKLIGHT, 1); /* BL_EN */
break;
default:
gpio_output(GPIO(2, B, 4), 1); /* BL_PWR_EN */
mdelay(20);
gpio_output(GPIO_BACKLIGHT, 1); /* LCD_BL */
mdelay(10);
gpio_output(GPIO(7, A, 2), 1); /* BL_EN */
break;
}
}
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