diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0162-Add-hy28b-2017-model-device-tree-overlay-2721.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0162-Add-hy28b-2017-model-device-tree-overlay-2721.patch | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0162-Add-hy28b-2017-model-device-tree-overlay-2721.patch b/target/linux/brcm2708/patches-4.19/950-0162-Add-hy28b-2017-model-device-tree-overlay-2721.patch new file mode 100644 index 0000000000..2c0493777b --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0162-Add-hy28b-2017-model-device-tree-overlay-2721.patch @@ -0,0 +1,209 @@ +From a64595c1bc19752dca712c6cd90692a2a0e7397b Mon Sep 17 00:00:00 2001 +From: Hans-Wilhelm Warlo <5417271+hanswilw@users.noreply.github.com> +Date: Tue, 16 Oct 2018 18:20:48 +0200 +Subject: [PATCH] Add hy28b 2017 model device tree overlay (#2721) + +The 2017 version of the hy28b display requires a different +initialisation sequence. + +Signed-off-by: Hans-Wilhelm Warlo <hw@warlo.no> +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 19 +++ + .../boot/dts/overlays/hy28b-2017-overlay.dts | 152 ++++++++++++++++++ + 3 files changed, 172 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -49,6 +49,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + hifiberry-digi-pro.dtbo \ + hy28a.dtbo \ + hy28b.dtbo \ ++ hy28b-2017.dtbo \ + i2c-bcm2708.dtbo \ + i2c-gpio.dtbo \ + i2c-mux.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -770,6 +770,25 @@ Params: speed Display + ledgpio GPIO used to control backlight + + ++Name: hy28b-2017 ++Info: HY28B 2017 version - 2.8" TFT LCD Display Module by HAOYU Electronics ++ Default values match Texy's display shield ++Load: dtoverlay=hy28b-2017,<param>=<val> ++Params: speed Display SPI bus speed ++ ++ rotate Display rotation {0,90,180,270} ++ ++ fps Delay between frame updates ++ ++ debug Debug output level {0-7} ++ ++ xohms Touchpanel sensitivity (X-plate resistance) ++ ++ resetgpio GPIO used to reset controller ++ ++ ledgpio GPIO used to control backlight ++ ++ + Name: i2c-bcm2708 + Info: Fall back to the i2c_bcm2708 driver for the i2c_arm bus. + Load: dtoverlay=i2c-bcm2708 +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts +@@ -0,0 +1,152 @@ ++/* ++ * Device Tree overlay for HY28b display shield by Texy. ++ * Modified for 2017 version with ILI9325 D chip ++ */ ++ ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; ++ ++ fragment@0 { ++ target = <&spi0>; ++ __overlay__ { ++ status = "okay"; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&spidev0>; ++ __overlay__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ fragment@2 { ++ target = <&spidev1>; ++ __overlay__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ fragment@3 { ++ target = <&gpio>; ++ __overlay__ { ++ hy28b_pins: hy28b_pins { ++ brcm,pins = <17 25 18>; ++ brcm,function = <0 1 1>; /* in out out */ ++ }; ++ }; ++ }; ++ ++ fragment@4 { ++ target = <&spi0>; ++ __overlay__ { ++ /* needed to avoid dtc warning */ ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ hy28b: hy28b@0{ ++ compatible = "ilitek,ili9325"; ++ reg = <0>; ++ pinctrl-names = "default"; ++ pinctrl-0 = <&hy28b_pins>; ++ ++ spi-max-frequency = <48000000>; ++ spi-cpol; ++ spi-cpha; ++ rotate = <270>; ++ bgr; ++ fps = <50>; ++ buswidth = <8>; ++ startbyte = <0x70>; ++ reset-gpios = <&gpio 25 0>; ++ led-gpios = <&gpio 18 1>; ++ ++ init = <0x10000e5 0x78F0 ++ 0x1000001 0x0100 ++ 0x1000002 0x0700 ++ 0x1000003 0x1030 ++ 0x1000004 0x0000 ++ 0x1000008 0x0207 ++ 0x1000009 0x0000 ++ 0x100000a 0x0000 ++ 0x100000c 0x0000 ++ 0x100000d 0x0000 ++ 0x100000f 0x0000 ++ 0x1000010 0x0000 ++ 0x1000011 0x0007 ++ 0x1000012 0x0000 ++ 0x1000013 0x0000 ++ 0x1000007 0x0001 ++ 0x2000032 ++ 0x2000032 ++ 0x2000032 ++ 0x2000032 ++ 0x1000010 0x1090 ++ 0x1000011 0x0227 ++ 0x2000032 ++ 0x1000012 0x001f ++ 0x2000032 ++ 0x1000013 0x1500 ++ 0x1000029 0x0027 ++ 0x100002b 0x000d ++ 0x2000032 ++ 0x1000020 0x0000 ++ 0x1000021 0x0000 ++ 0x2000032 ++ 0x1000030 0x0000 ++ 0x1000031 0x0707 ++ 0x1000032 0x0307 ++ 0x1000035 0x0200 ++ 0x1000036 0x0008 ++ 0x1000037 0x0004 ++ 0x1000038 0x0000 ++ 0x1000039 0x0707 ++ 0x100003c 0x0002 ++ 0x100003d 0x1d04 ++ 0x1000050 0x0000 ++ 0x1000051 0x00ef ++ 0x1000052 0x0000 ++ 0x1000053 0x013f ++ 0x1000060 0xa700 ++ 0x1000061 0x0001 ++ 0x100006a 0x0000 ++ 0x1000080 0x0000 ++ 0x1000081 0x0000 ++ 0x1000082 0x0000 ++ 0x1000083 0x0000 ++ 0x1000084 0x0000 ++ 0x1000085 0x0000 ++ 0x1000090 0x0010 ++ 0x1000092 0x0600 ++ 0x1000007 0x0133>; ++ debug = <0>; ++ }; ++ ++ hy28b_ts: hy28b-ts@1 { ++ compatible = "ti,ads7846"; ++ reg = <1>; ++ ++ spi-max-frequency = <2000000>; ++ interrupts = <17 2>; /* high-to-low edge triggered */ ++ interrupt-parent = <&gpio>; ++ pendown-gpio = <&gpio 17 0>; ++ ti,x-plate-ohms = /bits/ 16 <100>; ++ ti,pressure-max = /bits/ 16 <255>; ++ }; ++ }; ++ }; ++ __overrides__ { ++ speed = <&hy28b>,"spi-max-frequency:0"; ++ rotate = <&hy28b>,"rotate:0"; ++ fps = <&hy28b>,"fps:0"; ++ debug = <&hy28b>,"debug:0"; ++ xohms = <&hy28b_ts>,"ti,x-plate-ohms;0"; ++ resetgpio = <&hy28b>,"reset-gpios:4", ++ <&hy28b_pins>, "brcm,pins:4"; ++ ledgpio = <&hy28b>,"led-gpios:4", ++ <&hy28b_pins>, "brcm,pins:8"; ++ }; ++}; |