diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.10/950-0571-dtoverlays-Add-overlays-for-JDI-LT070ME05000-1200x19.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.10/950-0571-dtoverlays-Add-overlays-for-JDI-LT070ME05000-1200x19.patch | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0571-dtoverlays-Add-overlays-for-JDI-LT070ME05000-1200x19.patch b/target/linux/bcm27xx/patches-5.10/950-0571-dtoverlays-Add-overlays-for-JDI-LT070ME05000-1200x19.patch new file mode 100644 index 0000000000..33a4f39ee0 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.10/950-0571-dtoverlays-Add-overlays-for-JDI-LT070ME05000-1200x19.patch @@ -0,0 +1,216 @@ +From 5752746d0694ee607c2971735f2befc8a86fbab9 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Thu, 15 Apr 2021 16:46:34 +0100 +Subject: [PATCH] dtoverlays: Add overlays for JDI LT070ME05000 + 1200x1920 DSI panel + +Credit to forum member gizmomouse on +https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=253912 and +Andrey Vostrukhin of Harlab for these overlays. + +See https://github.com/harlab/CM4_LCD_LT070ME05000 for +schematics and docs for the adapter board to connect this panel which +is found in the Asus/Google 2013 Nexus 7" tablet and therefore +relatively easily available. + +Note that this uses 4 DSI data lanes, and therefore MUST be used +with DISP1 on a Compute Module. It can not be used on a standard +Pi. + +There are two versions of the adapter board. V1 connects the +display controls to Pi GPIOs, whilst v2 uses an I2C GPIO expander +so needs no additional connections beyond the FFC and power. + +The touchscreen overlay for these panels varies, so that part +is not configured. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + arch/arm/boot/dts/overlays/Makefile | 2 + + arch/arm/boot/dts/overlays/README | 21 ++++++ + .../vc4-kms-dsi-lt070me05000-overlay.dts | 69 +++++++++++++++++++ + .../vc4-kms-dsi-lt070me05000-v2-overlay.dts | 64 +++++++++++++++++ + 4 files changed, 156 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-overlay.dts + create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-v2-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -213,6 +213,8 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + upstream-pi4.dtbo \ + vc4-fkms-v3d.dtbo \ + vc4-kms-dsi-7inch.dtbo \ ++ vc4-kms-dsi-lt070me05000.dtbo \ ++ vc4-kms-dsi-lt070me05000-v2.dtbo \ + vc4-kms-kippah-7inch.dtbo \ + vc4-kms-v3d.dtbo \ + vc4-kms-v3d-pi4.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -3158,6 +3158,27 @@ Load: dtoverlay=vc4-kms-dsi-7inch + Params: <None> + + ++Name: vc4-kms-dsi-lt070me05000 ++Info: Enable a JDI LT070ME05000 DSI display on DSI1. ++ Note that this is a 4 lane DSI device, so it will only work on a Compute ++ Module. ++ Requires vc4-kms-v3d to be loaded. ++Load: dtoverlay=vc4-kms-dsi-lt070me05000,<param> ++Params: reset GPIO for the reset signal (default 17) ++ enable GPIO for the enable signal (default 4) ++ dcdc-en GPIO for the DC-DC converter enable (default 5) ++ ++ ++Name: vc4-kms-dsi-lt070me05000-v2 ++Info: Enable a JDI LT070ME05000 DSI display on DSI1 using Harlab's V2 ++ interface board. ++ Note that this is a 4 lane DSI device, so it will only work on a Compute ++ Module. ++ Requires vc4-kms-v3d to be loaded. ++Load: dtoverlay=vc4-kms-dsi-lt070me05000-v2 ++Params: <None> ++ ++ + Name: vc4-kms-kippah-7inch + Info: Enable the Adafruit DPI Kippah with the 7" Ontat panel attached. + Requires vc4-kms-v3d to be loaded. +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-overlay.dts +@@ -0,0 +1,69 @@ ++/* ++ * Device Tree overlay to connect a JDI LT070ME05000 DSI panel to DSI1. ++ * This uses 4 DSI data lanes, so can only be used with a Compute Module. ++ * ++ * Credit to forum user gizmomouse on ++ * https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=253912 and ++ * Andrey Vostrukhin of Harlab for the overlay. ++ * ++ * Refer to https://github.com/harlab/CM4_LCD_LT070ME05000 for schematics and ++ * other documentation. ++ */ ++ ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2835"; ++ ++ fragment@0 { ++ target = <&dsi1>; ++ __overlay__{ ++ status = "okay"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ port { ++ dsi_out_port:endpoint { ++ remote-endpoint = <&panel_dsi_port>; ++ }; ++ }; ++ ++ lt070me05000:lt070me05000@0 { ++ compatible = "jdi,lt070me05000"; ++ status = "okay"; ++ reg = <0>; ++ reset-gpios = <&gpio 17 1>; // LCD RST ++ enable-gpios = <&gpio 4 0>; // LCD Enable ++ dcdc-en-gpios = <&gpio 5 0>; // LCD DC-DC Enable ++ port { ++ panel_dsi_port: endpoint { ++ remote-endpoint = <&dsi_out_port>; ++ }; ++ }; ++ }; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&gpio>; ++ __overlay__ { ++ lt070me05000_pins: lt070me05000_pins { ++ brcm,pins = <4 5 17>; ++ brcm,function = <1 1 1>; // out ++ brcm,pull = <0 0 0>; // off ++ }; ++ }; ++ ++ }; ++ ++ __overrides__ { ++ reset = <<070me05000_pins>,"brcm,pins:8", ++ <<070me05000>,"reset-gpios:4"; ++ ++ enable = <<070me05000_pins>,"brcm,pins:0", ++ <<070me05000>,"enable-gpios:4"; ++ ++ dcdc-en = <<070me05000_pins>,"brcm,pins:4", ++ <<070me05000>,"dcdc-en-gpios:4"; ++ }; ++}; +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-v2-overlay.dts +@@ -0,0 +1,64 @@ ++/* ++ * Device Tree overlay to connect a JDI LT070ME05000 DSI panel to DSI1. ++ * This uses 4 DSI data lanes, so can only be used with a Compute Module. ++ * ++ * The overlay is for V2 of Harlab's interface board that uses a PCA9536 to ++ * handle the panel's control GPIOs instead of wiring it back to Pi GPIOs. ++ * ++ * Credit to Andrey Vostrukhin of Harlab for the overlay. ++ * ++ * Refer to https://github.com/harlab/CM4_LCD_LT070ME05000 for schematics and ++ * other documentation. ++ */ ++ ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2835"; ++ ++ fragment@0 { ++ target = <&i2c_csi_dsi>; ++ __overlay__ { ++ #address-cells = <1>; ++ #size-cells = <0>; ++ status = "okay"; ++ ++ pca: pca@41 { ++ compatible = "nxp,pca9536"; ++ reg = <0x41>; ++ gpio-controller; ++ #gpio-cells = <2>; ++ status = "okay"; ++ }; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&dsi1>; ++ __overlay__{ ++ status = "okay"; ++ #address-cells = <1>; ++ #size-cells = <0>; ++ port { ++ dsi_out_port:endpoint { ++ remote-endpoint = <&panel_dsi_port>; ++ }; ++ }; ++ ++ lt070me05000:lt070me05000@0 { ++ compatible = "jdi,lt070me05000"; ++ status = "okay"; ++ reg = <0>; ++ reset-gpios = <&pca 0 1>; ++ enable-gpios = <&pca 2 0>; ++ dcdc-en-gpios = <&pca 1 0>; ++ port { ++ panel_dsi_port: endpoint { ++ remote-endpoint = <&dsi_out_port>; ++ }; ++ }; ++ }; ++ }; ++ }; ++}; |