[S] Change in coreboot[main]: mb/google/rauru: Configure firmware display for eDP panel

[Yidi Lin (Code Review)]

Yidi Lin has submitted this change. ( https://review.coreboot.org/c/coreboot/+/85952?usp=email )

(

13 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the submitted one.
 )Change subject: mb/google/rauru: Configure firmware display for eDP panel
......................................................................

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

Add eDP panel power-on sequences and initialize the display in the
ramstage. The mt6373_set_vcn33_3_voltage function sets the voltage
required to power on the eDP panel.

TEST=Build pass, the firmware screen displays correctly.
BUG=b:343351631, b:353464237

Signed-off-by: Nancy Lin 
Change-Id: Ic928b2478c41ccd03223fd2b73d9e81d303a2036
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85952
Tested-by: build bot (Jenkins) 
Reviewed-by: Yu-Ping Wu 
Reviewed-by: Yidi Lin 
---
M src/mainboard/google/rauru/Kconfig
M src/mainboard/google/rauru/mainboard.c
2 files changed, 20 insertions(+), 0 deletions(-)

Approvals:
  Yu-Ping Wu: Looks good to me, approved
  build bot (Jenkins): Verified
  Yidi Lin: Looks good to me, approved

diff --git a/src/mainboard/google/rauru/Kconfig b/src/mainboard/google/rauru/Kconfig
index a686838..ae3ffb3 100644
--- a/src/mainboard/google/rauru/Kconfig
+++ b/src/mainboard/google/rauru/Kconfig
@@ -23,6 +23,8 @@
    select COMMON_CBFS_SPI_WRAPPER
    select SPI_FLASH
    select SPI_FLASH_INCLUDE_ALL_DRIVERS
+	select MAINBOARD_HAS_NATIVE_VGA_INIT
+	select HAVE_LINEAR_FRAMEBUFFER
    select CHROMEOS_USE_EC_WATCHDOG_FLAG if CHROMEOS
    select EC_GOOGLE_CHROMEEC
    select EC_GOOGLE_CHROMEEC_BOARDID
diff --git a/src/mainboard/google/rauru/mainboard.c b/src/mainboard/google/rauru/mainboard.c
index 817bcf2..f55da81 100644
--- a/src/mainboard/google/rauru/mainboard.c
+++ b/src/mainboard/google/rauru/mainboard.c
@@ -1,15 +1,18 @@
 /* SPDX-License-Identifier: GPL-2.0-only */

+#include <bootmode.h>
 #include <console/console.h>
 #include <device/device.h>
 #include <fw_config.h>
 #include <gpio.h>
 #include <soc/addressmap.h>
 #include <soc/bl31.h>
+#include <soc/display.h>
 #include <soc/dpm_v2.h>
 #include <soc/gpio_common.h>
 #include <soc/i2c.h>
 #include <soc/msdc.h>
+#include <soc/mt6373.h>
 #include <soc/pcie.h>
 #include <soc/spm_common.h>
 #include <soc/storage.h>
@@ -70,6 +73,13 @@
    gpio_output(GPIO_FP_RST_1V8_S3_L, 1);
 }

+static void enable_display_power_rail(void)
+{
+	mt6373_init_pmif_arb();
+	mt6373_enable_vcn33_3(true);
+	mt6373_set_vcn33_3_voltage(3300000);
+}
+
 enum mtk_storage_type mainboard_get_storage_type(void)
 {
    uint32_t index = storage_id();
@@ -96,6 +106,14 @@

static void mainboard_init(struct device *dev)
 {
+	if (display_init_required()) {
+		enable_display_power_rail();
+		if (mtk_display_init() < 0)
+			printk(BIOS_ERR, "%s: Failed to init display\n", __func__);
+	} else {
+		printk(BIOS_INFO, "%s: Skipped display initialization\n", __func__);
+	}
+
    setup_usb_host();
    power_on_fpmcu();
    configure_audio();