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mb/google/geralt: Configure firmware display for eDP panel 

Add eDP panel power-on sequences and initialize the display in the
ramstage.

eDP panel in MT8188 EVB: "IVO R140NWF5 RH".
Panel spec name: R140NWF5 RH Product Specification

Firmware display eDP panel logs:
configure_display: Starting display initialization
SINK DPCD version: 0x11
SINK SUPPORT SSC!
Extracted contents:
header:          00 ff ff ff ff ff ff 00
serial number:   26 cf 7d 05 00 00 00 00 00 1e
version:         01 04
basic params:    95 1f 11 78 0a
chroma info:     76 90 94 55 54 90 27 21 50 54
established:     00 00 00
standard:        01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
descriptor 1:    38 36 80 a0 70 38 20 40 18 30 3c 00 35 ae 10 00 00 19
descriptor 2:    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
descriptor 3:    00 00 00 fe 00 49 6e 66 6f 56 69 73 69 6f 6e 0a 20 20
descriptor 4:    00 00 00 fe 00 52 31 34 30 4e 57 46 35 20 52 48 20 0a
extensions:      00
checksum:        fb
Manufacturer: IVO Model 57d Serial Number 0
Made week 0 of 2020
EDID version: 1.4

BUG=b:244208960
TEST=see firmware display using eDP panel in MT8188 EVB.

Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: I67e0699c976c6f85e69d40d77154420c983b715e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68490
Reviewed-by: Yidi Lin <yidilin@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
This commit is contained in:
Bo-Chen Chen 2022-09-29 17:32:02 +08:00 committed by Yu-Ping Wu
parent f09872c5bd
commit c1345d6d70
6 changed files with 89 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/mainboard/google/geralt/Kconfig
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@ -28,6 +28,8 @@ config BOARD_SPECIFIC_OPTIONS
select I2C_TPM if VBOOT
select MAINBOARD_HAS_TPM2 if VBOOT
select TPM_GOOGLE_TI50 if VBOOT
select MAINBOARD_HAS_NATIVE_VGA_INIT
select HAVE_LINEAR_FRAMEBUFFER
config MAINBOARD_DIR
string

1
src/mainboard/google/geralt/Makefile.inc
View File

@ -15,6 +15,7 @@ romstage-y += sdram_configs.c
ramstage-y += memlayout.ld
ramstage-y += boardid.c
ramstage-y += chromeos.c
ramstage-y += display.c
ramstage-y += mainboard.c
ramstage-y += regulator.c
ramstage-y += reset.c

64
src/mainboard/google/geralt/display.c Normal file
View File

@ -0,0 +1,64 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/console.h>
#include <delay.h>
#include <edid.h>
#include <framebuffer_info.h>
#include <gpio.h>
#include <soc/ddp.h>
#include <soc/dptx.h>
#include <soc/gpio_common.h>
#include <soc/mtcmos.h>
#include "display.h"
#include "gpio.h"
/* Set up backlight control pins as output pin and power-off by default */
static void configure_edp_panel_backlight(void)
{
gpio_output(GPIO_AP_EDP_BKLTEN, 0);
gpio_output(GPIO_EDP_BL_PWM_1V8, 0);
}
static void power_on_edp_panel(void)
{
gpio_output(GPIO_EN_PP3300_EDP_DISP_X, 1);
gpio_set_pull(GPIO_EDP_HPD_1V8, GPIO_PULL_ENABLE, GPIO_PULL_UP);
gpio_set_mode(GPIO_EDP_HPD_1V8, 4);
}
int configure_display(void)
{
struct edid edid;
struct fb_info *info;
const char *name;
printk(BIOS_INFO, "%s: Starting display initialization\n", __func__);
mtcmos_display_power_on();
configure_edp_panel_backlight();
power_on_edp_panel();
mtk_ddp_init();
mdelay(200);
if (mtk_edp_init(&edid) < 0) {
printk(BIOS_ERR, "%s: Failed to initialize eDP\n", __func__);
return -1;
}
name = edid.ascii_string;
if (name[0] == '\0')
name = "unknown name";
printk(BIOS_INFO, "%s: '%s %s' %dx%d@%dHz\n", __func__,
edid.manufacturer_name, name, edid.mode.ha, edid.mode.va,
edid.mode.refresh);
edid_set_framebuffer_bits_per_pixel(&edid, 32, 0);
mtk_ddp_mode_set(&edid);
info = fb_new_framebuffer_info_from_edid(&edid, (uintptr_t)0);
if (info)
fb_set_orientation(info, LB_FB_ORIENTATION_NORMAL);
return 0;
}

8
src/mainboard/google/geralt/display.h Normal file
View File

@ -0,0 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __MAINBOARD_GOOGLE_GERALT_DISPLAY_H__
#define __MAINBOARD_GOOGLE_GERALT_DISPLAY_H__
int configure_display(void);
#endif

5
src/mainboard/google/geralt/gpio.h
View File

@ -13,6 +13,11 @@
#define GPIO_GSC_AP_INT_ODL GPIO(GPIO00)
#define GPIO_XHCI_INIT_DONE GPIO(DPI_CK)
#define GPIO_AP_EDP_BKLTEN GPIO(GPIO01)
#define GPIO_EDP_BL_PWM_1V8 GPIO(DISP_PWM1)
#define GPIO_EDP_HPD_1V8 GPIO(GPIO17)
#define GPIO_EN_PP3300_EDP_DISP_X GPIO(DSI1_LCM_RST)
void setup_chromeos_gpios(void);
#endif

9
src/mainboard/google/geralt/mainboard.c
View File

@ -1,14 +1,23 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <bootmode.h>
#include <device/device.h>
#include <soc/bl31.h>
#include <soc/msdc.h>
#include <soc/usb.h>
#include "display.h"
#include "gpio.h"
static void mainboard_init(struct device *dev)
{
if (display_init_required()) {
if (configure_display() < 0)
printk(BIOS_ERR, "%s: Failed to init display\n", __func__);
} else {
printk(BIOS_INFO, "%s: Skipped display initialization\n", __func__);
}
mtk_msdc_configure_emmc(true);
mtk_msdc_configure_sdcard();
setup_usb_host();