[PATCH v3 0/4] arm64: dts: imx8mm-kontron: Add HDMI and LVDS display support

[PATCH v3 0/4] arm64: dts: imx8mm-kontron: Add HDMI and LVDS display support

[Frieder Schrempf]

This add support for the display bridges (DSI->LVDS and DSI->HDMI)
on the BL i.MX8MM and the 7" LVDS panel in a separate overlay.

Only one of the interfaces (HDMI or LVDS) is supported at the same
time. Enabling the LVDS overlay will disable the HDMI interface.

* Patch 1 and 2: Add the necessary binding changes
* Patch 3: Extend the BL devicetree
* Patch 4: Add the LVDS panel overlay

Changes for v3:
* Add A-b tag from Krzysztof
* Fix LVDS bridge input port reference

Changes for v2:
* Patch 1: Add link to commit message
* Patch 2: Add Conors A-b tag
* Patch 3: Remove blank lines from hdmi node
* Patch 3: Fix order of lvds and hdmi nodes within i2c
* Patch 3: Remove the unneeded deletion of samsung,pll-clock-frequency
* Patch 3: Use the existing MIPI DSI output port from imx8mm.dtsi
* Patch 4: Update copyright year
* Patch 4: Use exisitng MIPI DSI output port from imx8mm.dtsi
* Patch 4: Fix pinctrl for GPIO hogs
* Patch 4: Fix property order in i2c2 node
* Patch 4: Use generic node name for touchscreen

Frieder Schrempf (4):
  dt-bindings: vendor-prefixes: Add Jenson Display
  dt-bindings: display: panel-lvds: Add compatible for Jenson
    BL-JT60050-01A
  arm64: dts: imx8mm-kontron: Add support for display bridges on BL
    i.MX8MM
  arm64: dts: imx8mm-kontron: Add DL (Display-Line) overlay with LVDS
    support

 .../bindings/display/panel/panel-lvds.yaml    |   2 +
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 arch/arm64/boot/dts/freescale/Makefile        |   4 +
 .../boot/dts/freescale/imx8mm-kontron-bl.dts  | 131 ++++++++++++
 .../boot/dts/freescale/imx8mm-kontron-dl.dtso | 189 ++++++++++++++++++
 5 files changed, 328 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-kontron-dl.dtso

-- 
2.46.0

[PATCH v3 1/4] dt-bindings: vendor-prefixes: Add Jenson Display

[Frieder Schrempf]

From: Frieder Schrempf <frieder.schrempf@kontron.de>

Add vendor prefix for manufacturer Jenson Display (http://jensondisplay.com).

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
Changes for v3:
* Add A-b tag from Krzysztof (thanks!)

Changes for v2:
* Add link to commit message
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index a70ce43b3dc03..2b483eb5e364c 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -750,6 +750,8 @@ patternProperties:
     description: Japan Display Inc.
   "^jedec,.*":
     description: JEDEC Solid State Technology Association
+  "^jenson,.*":
+    description: Jenson Display Co. Ltd.
   "^jesurun,.*":
     description: Shenzhen Jesurun Electronics Business Dept.
   "^jethome,.*":
-- 
2.46.0

[PATCH v3 2/4] dt-bindings: display: panel-lvds: Add compatible for Jenson BL-JT60050-01A

[Frieder Schrempf]

From: Frieder Schrempf <frieder.schrempf@kontron.de>

The Jenson BL-JT60050-01A is a 7" 1024x600 LVDS display.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
---
Changes for v3:
* none

Changes for v2:
* Add tag from Conor (thanks!)
---
 Documentation/devicetree/bindings/display/panel/panel-lvds.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/panel-lvds.yaml b/Documentation/devicetree/bindings/display/panel/panel-lvds.yaml
index 155d8ffa8f6ef..5af2d69300751 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-lvds.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-lvds.yaml
@@ -50,6 +50,8 @@ properties:
           - hannstar,hsd101pww2
           # Hydis Technologies 7" WXGA (800x1280) TFT LCD LVDS panel
           - hydis,hv070wx2-1e0
+          # Jenson Display BL-JT60050-01A 7" WSVGA (1024x600) color TFT LCD LVDS panel
+          - jenson,bl-jt60050-01a
           - tbs,a711-panel
 
       - const: panel-lvds
-- 
2.46.0

[PATCH v3 3/4] arm64: dts: imx8mm-kontron: Add support for display bridges on BL i.MX8MM

[Frieder Schrempf]

From: Frieder Schrempf <frieder.schrempf@kontron.de>

The Kontron Electronics BL i.MX8MM has oboard disply bridges for
DSI->HDMI and DSI->LVDS conversion. The DSI interface is muxed by
a GPIO-controlled switch to one of these two bridges.

By default the HDMI bridge is enabled. The LVDS bridge can be
selected by loading an additional (panel-specific) overlay.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
---
Changes for v3:
* none

Changes for v2:
* Remove blank lines from hdmi node
* Fix order of lvds and hdmi nodes within i2c
* Remove the unneeded deletion of samsung,pll-clock-frequency
* Use the existing MIPI DSI output port from imx8mm.dtsi
---
 .../boot/dts/freescale/imx8mm-kontron-bl.dts  | 131 ++++++++++++++++++
 1 file changed, 131 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts
index aab8e24216501..a8ef4fba16a9e 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts
@@ -25,6 +25,17 @@ osc_can: clock-osc-can {
 		clock-output-names = "osc-can";
 	};
 
+	hdmi-out {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_in_conn: endpoint {
+				remote-endpoint = <&bridge_out_conn>;
+			};
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -132,6 +143,86 @@ ethphy: ethernet-phy@0 {
 	};
 };
 
+&gpio4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_gpio4>;
+
+	dsi_mux_sel_hdmi: dsi-mux-sel-hdmi-hog {
+		gpio-hog;
+		gpios = <14 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "dsi-mux-sel";
+	};
+
+	dsi_mux_sel_lvds: dsi-mux-sel-lvds-hog {
+		gpio-hog;
+		gpios = <14 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "dsi-mux-sel";
+		status = "disabled";
+	};
+
+	dsi-mux-oe-hog {
+		gpio-hog;
+		gpios = <15 GPIO_ACTIVE_LOW>;
+		output-high;
+		line-name = "dsi-mux-oe";
+	};
+};
+
+&i2c3 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c3>;
+	status = "okay";
+
+	lvds: bridge@2c {
+		compatible = "ti,sn65dsi84";
+		reg = <0x2c>;
+		enable-gpios = <&gpio4 26 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_sn65dsi84>;
+		status = "disabled";
+	};
+
+	hdmi: hdmi@39 {
+		compatible = "adi,adv7535";
+		reg = <0x39>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_adv7535>;
+		adi,dsi-lanes = <4>;
+		interrupt-parent = <&gpio4>;
+		interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
+		a2vdd-supply = <&reg_vdd_1v8>;
+		avdd-supply = <&reg_vdd_1v8>;
+		dvdd-supply = <&reg_vdd_1v8>;
+		pvdd-supply = <&reg_vdd_1v8>;
+		v1p2-supply = <&reg_vdd_1v8>;
+		v3p3-supply = <&reg_vdd_3v3>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				bridge_in_dsi_hdmi: endpoint {
+					remote-endpoint = <&mipi_dsi_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				bridge_out_conn: endpoint {
+					remote-endpoint = <&hdmi_in_conn>;
+				};
+			};
+		};
+	};
+};
+
 &i2c4 {
 	clock-frequency = <100000>;
 	pinctrl-names = "default";
@@ -144,6 +235,19 @@ rx8900: rtc@32 {
 	};
 };
 
+&lcdif {
+	status = "okay";
+};
+
+&mipi_dsi {
+	samsung,esc-clock-frequency = <54000000>;
+	status = "okay";
+};
+
+&mipi_dsi_out {
+	remote-endpoint = <&bridge_in_dsi_hdmi>;
+};
+
 &pwm2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_pwm2>;
@@ -207,6 +311,12 @@ &iomuxc {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_gpio>;
 
+	pinctrl_adv7535: adv7535grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_TXD4_GPIO4_IO16		0x19
+		>;
+	};
+
 	pinctrl_can: cangrp {
 		fsl,pins = <
 			MX8MM_IOMUXC_SAI3_RXFS_GPIO4_IO28		0x19
@@ -277,6 +387,20 @@ MX8MM_IOMUXC_SAI3_MCLK_GPIO5_IO2		0x19
 		>;
 	};
 
+	pinctrl_gpio4: gpio4grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_TXD2_GPIO4_IO14		0x19
+			MX8MM_IOMUXC_SAI1_TXD3_GPIO4_IO15		0x19
+		>;
+	};
+
+	pinctrl_i2c3: i2c3grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C3_SCL_I2C3_SCL			0x40000083
+			MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA			0x40000083
+		>;
+	};
+
 	pinctrl_i2c4: i2c4grp {
 		fsl,pins = <
 			MX8MM_IOMUXC_I2C4_SCL_I2C4_SCL			0x40000083
@@ -290,6 +414,13 @@ MX8MM_IOMUXC_SPDIF_RX_PWM2_OUT			0x19
 		>;
 	};
 
+	pinctrl_sn65dsi84: sn65dsi84grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI2_TXD0_GPIO4_IO26		0x19
+			MX8MM_IOMUXC_SD2_WP_GPIO2_IO20			0x19
+		>;
+	};
+
 	pinctrl_uart1: uart1grp {
 		fsl,pins = <
 			MX8MM_IOMUXC_SAI2_RXC_UART1_DCE_RX		0x0
-- 
2.46.0

[PATCH v3 4/4] arm64: dts: imx8mm-kontron: Add DL (Display-Line) overlay with LVDS support

[Frieder Schrempf]

From: Frieder Schrempf <frieder.schrempf@kontron.de>

The Kontron Electronics DL i.MX8MM consists of the BL i.MX8MM board
and a 7" LVDS panel. Provide an overlay that enables the panel.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
---
Changes for v3:
* Fix LVDS bridge input port reference

Changes for v2:
* Update copyright year
* Use exisitng MIPI DSI output port from imx8mm.dtsi
* Fix pinctrl for GPIO hogs
* Fix property order in i2c2 node
* Use generic node name for touchscreen
---
 arch/arm64/boot/dts/freescale/Makefile        |   4 +
 .../boot/dts/freescale/imx8mm-kontron-dl.dtso | 189 ++++++++++++++++++
 2 files changed, 193 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-kontron-dl.dtso

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index f04c22b7de72e..d8af069139920 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -244,6 +244,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx93-tqma9352-mba93xxla.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx93-var-som-symphony.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx95-19x19-evk.dtb
 
+imx8mm-kontron-dl-dtbs			:= imx8mm-kontron-bl.dtb imx8mm-kontron-dl.dtbo
+
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-kontron-dl.dtb
+
 imx8mm-venice-gw72xx-0x-imx219-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-imx219.dtbo
 imx8mm-venice-gw72xx-0x-rpidsi-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rpidsi.dtbo
 imx8mm-venice-gw72xx-0x-rs232-rts-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs232-rts.dtbo
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-dl.dtso b/arch/arm64/boot/dts/freescale/imx8mm-kontron-dl.dtso
new file mode 100644
index 0000000000000..1db27731b581c
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-dl.dtso
@@ -0,0 +1,189 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2024 Kontron Electronics GmbH
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include "imx8mm-pinfunc.h"
+
+&{/} {
+	compatible = "kontron,imx8mm-bl", "kontron,imx8mm-sl", "fsl,imx8mm";
+
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm1 0 50000 0>;
+		brightness-levels = <0 100>;
+		num-interpolated-steps = <100>;
+		default-brightness-level = <100>;
+	};
+
+	panel {
+		compatible = "jenson,bl-jt60050-01a", "panel-lvds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_panel>;
+		backlight = <&backlight>;
+		data-mapping = "vesa-24";
+		enable-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
+		height-mm = <86>;
+		width-mm = <154>;
+
+		panel-timing {
+			clock-frequency = <51200000>;
+			hactive = <1024>;
+			vactive = <600>;
+			hsync-len = <1>;
+			hfront-porch = <160>;
+			hback-porch = <160>;
+			vsync-len = <1>;
+			vfront-porch = <12>;
+			vback-porch = <23>;
+		};
+
+		port {
+			panel_out_bridge: endpoint {
+				remote-endpoint = <&bridge_out_panel>;
+			};
+		};
+	};
+};
+
+&dsi_mux_sel_hdmi {
+	status = "disabled";
+};
+
+&dsi_mux_sel_lvds {
+	status = "okay";
+};
+
+&mipi_dsi_out {
+	remote-endpoint = <&bridge_in_dsi_lvds>;
+};
+
+&gpio3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_gpio3>;
+
+	panel-rst-hog {
+		gpio-hog;
+		gpios = <20 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "panel-reset";
+	};
+
+	panel-stby-hog {
+		gpio-hog;
+		gpios = <21 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "panel-standby";
+	};
+
+	panel-hinv-hog {
+		gpio-hog;
+		gpios = <24 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "panel-horizontal-invert";
+	};
+
+	panel-vinv-hog {
+		gpio-hog;
+		gpios = <25 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "panel-vertical-invert";
+	};
+};
+
+&hdmi {
+	status = "disabled";
+};
+
+&i2c2 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	touchscreen@5d {
+		compatible = "goodix,gt928";
+		reg = <0x5d>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_touch>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <22 8>;
+		reset-gpios = <&gpio3 23 0>;
+		irq-gpios = <&gpio3 22 0>;
+	};
+};
+
+&lvds {
+	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+
+			bridge_in_dsi_lvds: endpoint {
+				remote-endpoint = <&mipi_dsi_out>;
+				data-lanes = <1 2>;
+			};
+		};
+
+		port@2 {
+			reg = <2>;
+
+			bridge_out_panel: endpoint {
+				remote-endpoint = <&panel_out_bridge>;
+			};
+		};
+	};
+};
+
+&pwm1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pwm1>;
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl_gpio3: gpio3grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI5_RXD3_GPIO3_IO24		0x19
+			MX8MM_IOMUXC_SAI5_RXC_GPIO3_IO20		0x19
+			MX8MM_IOMUXC_SAI5_RXD0_GPIO3_IO21		0x19
+			MX8MM_IOMUXC_SAI5_MCLK_GPIO3_IO25		0x19
+		>;
+	};
+
+	pinctrl_i2c2: i2c2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C2_SCL_I2C2_SCL			0x40000083
+			MX8MM_IOMUXC_I2C2_SDA_I2C2_SDA			0x40000083
+		>;
+	};
+
+	pinctrl_panel: panelgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI5_RXFS_GPIO3_IO19		0x19
+		>;
+	};
+
+	pinctrl_pwm1: pwm1grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SPDIF_EXT_CLK_PWM1_OUT		0x6
+		>;
+	};
+
+	pinctrl_touch: touchgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI5_RXD1_GPIO3_IO22		0x19
+			MX8MM_IOMUXC_SAI5_RXD2_GPIO3_IO23		0x19
+		>;
+	};
+};
-- 
2.46.0

Re: [PATCH v3 0/4] arm64: dts: imx8mm-kontron: Add HDMI and LVDS display support

[Shawn Guo]

On Tue, Oct 08, 2024 at 04:37:42PM +0200, Frieder Schrempf wrote:
> Frieder Schrempf (4):
...
>   arm64: dts: imx8mm-kontron: Add support for display bridges on BL
>     i.MX8MM
>   arm64: dts: imx8mm-kontron: Add DL (Display-Line) overlay with LVDS
>     support

Applied both, thanks!