[PATCH 2/2] am335x, guardian: Enable panel driver Himax HX8238D

Gireesh.Hiremath at in.bosch.com Gireesh.Hiremath at in.bosch.com
Wed Jan 6 16:31:36 CET 2021


From: Gireesh Hiremath <Gireesh.Hiremath at in.bosch.com>

Enable lcd controller related clocks, pinmux, config,
interface and port

Signed-off-by: Gireesh Hiremath <Gireesh.Hiremath at in.bosch.com>
---
 arch/arm/dts/am335x-guardian-u-boot.dtsi | 15 +++++++++++++++
 arch/arm/dts/am335x-guardian.dts         |  8 +++++++-
 arch/arm/mach-omap2/am33xx/Kconfig       |  2 ++
 board/bosch/guardian/board.c             | 22 ++++++++++++++++++++++
 board/bosch/guardian/mux.c               |  3 ++-
 configs/am335x_guardian_defconfig        |  7 +++++--
 drivers/video/Makefile                   |  1 +
 7 files changed, 54 insertions(+), 4 deletions(-)

diff --git a/arch/arm/dts/am335x-guardian-u-boot.dtsi b/arch/arm/dts/am335x-guardian-u-boot.dtsi
index 705ef335bf..2c355e583c 100644
--- a/arch/arm/dts/am335x-guardian-u-boot.dtsi
+++ b/arch/arm/dts/am335x-guardian-u-boot.dtsi
@@ -18,6 +18,10 @@
 	u-boot,dm-pre-reloc;
 };
 
+&lcdc {
+	u-boot,dm-pre-reloc;
+};
+
 &mmc1 {
 	u-boot,dm-pre-reloc;
 };
@@ -35,6 +39,17 @@
 	u-boot,dm-pre-reloc;
 };
 
+&spi0 {
+	lcd0: display at 0 {
+		compatible = "himax,hx8238d";
+		pinctrl-names = "default";
+		pinctrl-0 = <&lcd0_pins>;
+		reg = <0>;
+		label = "lcd";
+		spi-max-frequency = <100000>;
+	};
+};
+
 &uart0 {
 	u-boot,dm-pre-reloc;
 };
diff --git a/arch/arm/dts/am335x-guardian.dts b/arch/arm/dts/am335x-guardian.dts
index 7e70a96d25..93ee2e6c09 100644
--- a/arch/arm/dts/am335x-guardian.dts
+++ b/arch/arm/dts/am335x-guardian.dts
@@ -87,7 +87,7 @@
 			ac-bias           = <255>;
 			ac-bias-intrpt    = <0>;
 			dma-burst-sz      = <16>;
-			bpp               = <24>;
+			bpp               = <16>;
 			bus-width         = <16>;
 			fdd               = <0x80>;
 			sync-edge         = <0>;
@@ -247,6 +247,12 @@
 &lcdc {
 	blue-and-red-wiring = "crossed";
 	status = "okay";
+
+	port {
+		lcdc_0: endpoint at 0 {
+			remote-endpoint = <0>;
+		};
+	};
 };
 
 &mmc1 {
diff --git a/arch/arm/mach-omap2/am33xx/Kconfig b/arch/arm/mach-omap2/am33xx/Kconfig
index 9a98e8a0a9..204975092a 100644
--- a/arch/arm/mach-omap2/am33xx/Kconfig
+++ b/arch/arm/mach-omap2/am33xx/Kconfig
@@ -94,6 +94,8 @@ config TARGET_AM335X_GUARDIAN
 	select DM_SERIAL
 	select DM_GPIO
 	select DM_USB
+	select DM_VIDEO
+	select DM_PANEL_HX8238D
 
 config TARGET_AM335X_SL50
 	bool "Support am335x_sl50"
diff --git a/board/bosch/guardian/board.c b/board/bosch/guardian/board.c
index 8b3c82cafd..f3e616d21c 100644
--- a/board/bosch/guardian/board.c
+++ b/board/bosch/guardian/board.c
@@ -79,6 +79,18 @@ void am33xx_spl_board_init(void)
 	int mpu_vdd;
 	int usb_cur_lim;
 
+	struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER;
+
+	/*enable lcd controller related clocks*/
+	u32 *const clk_domains[] = { 0 };
+
+	u32 *const clk_modules_xre1specific[] = {
+		&cmper->lcdclkctrl,
+		&cmper->lcdcclkstctrl,
+		0
+	};
+	do_enable_clocks(clk_domains, clk_modules_xre1specific, 1);
+
 	/* Get the frequency */
 	dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev);
 
@@ -235,10 +247,20 @@ err:
 
 int board_late_init(void)
 {
+	int ret;
+	struct udevice *cdev;
+
 #ifdef CONFIG_LED_GPIO
 	led_default_state();
 #endif
 	set_bootmode_env();
+
+	ret = uclass_get_device(UCLASS_PANEL, 0, &cdev);
+	if (ret) {
+		debug("video panel not found: %d\n", ret);
+		return ret;
+	}
+
 	return 0;
 }
 #endif /* CONFIG_BOARD_LATE_INIT */
diff --git a/board/bosch/guardian/mux.c b/board/bosch/guardian/mux.c
index 9c81f29f9f..12c3eb666f 100644
--- a/board/bosch/guardian/mux.c
+++ b/board/bosch/guardian/mux.c
@@ -28,8 +28,9 @@ static struct module_pin_mux i2c0_pin_mux[] = {
 
 static struct module_pin_mux guardian_interfaces_pin_mux[] = {
 	{OFFSET(mcasp0_ahclkx), (MODE(7) | PULLDOWN_EN)},
+	{OFFSET(mii1_txen),     (MODE(7) | PULLDOWN_EN)},
 	{OFFSET(mcasp0_aclkx),  (MODE(7) | PULLUP_EN)},
-	{OFFSET(mii1_txd0),     (MODE(7) | PULLUP_EN)},
+	{OFFSET(mdio_clk),      (MODE(7) | PULLUP_EN)},
 	{OFFSET(uart1_rxd),     (MODE(7) | RXACTIVE | PULLUDDIS)},
 	{OFFSET(uart1_txd),     (MODE(7) | PULLUDDIS)},
 	{OFFSET(mii1_crs),      (MODE(7) | PULLDOWN_EN)},
diff --git a/configs/am335x_guardian_defconfig b/configs/am335x_guardian_defconfig
index d412311cec..b7170cd79e 100644
--- a/configs/am335x_guardian_defconfig
+++ b/configs/am335x_guardian_defconfig
@@ -50,8 +50,6 @@ CONFIG_CMD_MTD=y
 CONFIG_CMD_NAND=y
 CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
-CONFIG_BOOTP_DNS2=y
-# CONFIG_CMD_LED is not set
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_MTDPARTS=y
 CONFIG_MTDPARTS_DEFAULT="mtdparts=nand.0:256k(SPL),256k(SPL.backup1),256k(SPL.backup2),256k(SPL.backup3),1m(u-boot),1m(u-boot.backup1),1m(u-boot-2),1m(u-boot-2.backup1),256k(u-boot-env),256k(u-boot-env.backup1),256k(splash-screen),-(UBI)"
@@ -86,6 +84,10 @@ CONFIG_PHY=y
 CONFIG_NOP_PHY=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_SINGLE=y
+# CONFIG_RAM_ROCKCHIP_DEBUG is not set
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_OMAP3_SPI=y
 CONFIG_USB=y
 CONFIG_DM_USB_GADGET=y
 CONFIG_SPL_DM_USB_GADGET=y
@@ -98,6 +100,7 @@ CONFIG_USB_GADGET_MANUFACTURER="Texas Instruments"
 CONFIG_USB_GADGET_VENDOR_NUM=0x0451
 CONFIG_USB_GADGET_PRODUCT_NUM=0xd022
 CONFIG_USB_ETHER=y
+CONFIG_AM335X_LCD=y
 CONFIG_SPL_WDT=y
 # CONFIG_SPL_USE_TINY_PRINTF is not set
 CONFIG_SPL_OF_LIBFDT=y
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index e670d8f862..b13c8c7296 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_DM_VIDEO) += video-uclass.o vidconsole-uclass.o
 obj-$(CONFIG_DM_VIDEO) += video_bmp.o
 obj-$(CONFIG_PANEL) += panel-uclass.o
 obj-$(CONFIG_SIMPLE_PANEL) += simple_panel.o
+obj-$(CONFIG_DM_PANEL_HX8238D) += hx8238d.o
 endif
 
 obj-${CONFIG_EXYNOS_FB} += exynos/
-- 
2.20.1



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