--- /dev/null
+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";
++ };
++};
projects / openwrt / staging / chunkeey.git / blobdiff