mainboard.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/mmio.h>
#include <boot/coreboot_tables.h>
#include <delay.h>
#include <device/device.h>
#include <device/i2c_simple.h>
#include <edid.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 "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 */
        gpio_output(GPIO(7, C, 5), 1);                  /* 5V_DRV */
}
 
static void configure_sdmmc(void)
{
        write32(&rk3288_grf->iomux_sdmmc0, IOMUX_SDMMC0);
 
        /* use sdmmc0 io, disable JTAG function */
        write32(&rk3288_grf->soc_con0, RK_CLRBITS(1 << 12));
 
        /* Note: these power rail definitions are copied in romstage.c */
        rk808_configure_ldo(4, 3300); /* VCCIO_SD */
        rk808_configure_ldo(5, 3300); /* VCC33_SD */
 
        gpio_input(GPIO(7, A, 5));              /* SD_DET */
}
 
static void configure_emmc(void)
{
        write32(&rk3288_grf->iomux_emmcdata, IOMUX_EMMCDATA);
        write32(&rk3288_grf->iomux_emmcpwren, IOMUX_EMMCPWREN);
        write32(&rk3288_grf->iomux_emmccmd, IOMUX_EMMCCMD);
 
        gpio_output(GPIO(2, B, 1), 1);          /* EMMC_RST_L */
}
 
static void configure_codec(void)
{
        write32(&rk3288_grf->iomux_i2c2, IOMUX_I2C2);   /* CODEC I2C */
        i2c_init(2, 400*KHz);                           /* CODEC I2C */
 
        write32(&rk3288_grf->iomux_i2s, IOMUX_I2S);
        write32(&rk3288_grf->iomux_i2sclk, IOMUX_I2SCLK);
 
        rk808_configure_ldo(6, 1800);   /* VCC18_CODEC */
 
        /* AUDIO IO domain 1.8V voltage selection */
        write32(&rk3288_grf->io_vsel, RK_SETBITS(1 << 6));
        rkclk_configure_i2s(12288000);
}
 
static void configure_vop(void)
{
        write32(&rk3288_grf->iomux_lcdc, IOMUX_LCDC);
 
        /* lcdc(vop) iodomain select 1.8V */
        write32(&rk3288_grf->io_vsel, RK_SETBITS(1 << 0));
 
        gpio_output(GPIO(2, B, 5), 1);  /* AVDD_1V8_DISP_EN */
        rk808_configure_ldo(7, 2500);   /* VCC10_LCD_PWREN_H */
        gpio_output(GPIO(7, B, 6), 1);  /* LCD_EN */
        rk808_configure_switch(1, 1);   /* VCC33_LCD */
 
        /* enable edp HPD */
        gpio_input_pulldown(GPIO(7, B, 3));
        write32(&rk3288_grf->iomux_edp_hotplug, IOMUX_EDP_HOTPLUG);
}
 
static void mainboard_init(struct device *dev)
{
        gpio_output(GPIO_RESET, 0);
 
        configure_usb();
        configure_sdmmc();
        configure_emmc();
        configure_codec();
        configure_vop();
}
 
static void mainboard_enable(struct device *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_TAG_DMA;
        dma->size = sizeof(*dma);
        dma->range_start = (uintptr_t)_dma_coherent;
        dma->range_size = REGION_SIZE(dma_coherent);
}
 
void mainboard_power_on_backlight(void)
{
        gpio_output(GPIO(2, B, 4), 1);  /* BL_PWR_EN */
        mdelay(120);
        gpio_output(GPIO(7, A, 0), 1);  /* LCD_BL */
        mdelay(10);
        gpio_output(GPIO_BACKLIGHT, 1); /* BL_EN */
}