X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fbrcm2708%2Fpatches-4.19%2F950-0364-BCM2708-Add-core-Device-Tree-support-ilitek251x.patch;fp=target%2Flinux%2Fbrcm2708%2Fpatches-4.19%2F950-0364-BCM2708-Add-core-Device-Tree-support-ilitek251x.patch;h=0967821a4c6a0489569b8fcd10a980630c2a368c;hb=84d555aa74434392b682fd9eb0fa701c89a046d6;hp=0000000000000000000000000000000000000000;hpb=953973c2991e8640549a55df7a0574a1abac8644;p=openwrt%2Fstaging%2Fchunkeey.git

diff --git a/target/linux/brcm2708/patches-4.19/950-0364-BCM2708-Add-core-Device-Tree-support-ilitek251x.patch b/target/linux/brcm2708/patches-4.19/950-0364-BCM2708-Add-core-Device-Tree-support-ilitek251x.patch
new file mode 100644
index 0000000000..0967821a4c
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0364-BCM2708-Add-core-Device-Tree-support-ilitek251x.patch
@@ -0,0 +1,91 @@
+From c0dfc87e355a7c6e434122e1a4fcc69729970610 Mon Sep 17 00:00:00 2001
+From: Samuel Hsu <hsu@distec.de>
+Date: Mon, 8 Apr 2019 17:06:44 +0200
+Subject: [PATCH] BCM2708: Add core Device Tree support, ilitek251x
+
+Signed-off-by: Samuel Hsu <hsu@distec.de>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             | 11 +++++
+ .../boot/dts/overlays/ilitek251x-overlay.dts  | 45 +++++++++++++++++++
+ 3 files changed, 57 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/ilitek251x-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -67,6 +67,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	i2c0-bcm2708.dtbo \
+ 	i2c1-bcm2708.dtbo \
+ 	i2s-gpio28-31.dtbo \
++	ilitek251x.dtbo \
+ 	iqaudio-dac.dtbo \
+ 	iqaudio-dacplus.dtbo \
+ 	iqaudio-digi-wm8804-audio.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1146,6 +1146,17 @@ Load:   dtoverlay=i2s-gpio28-31
+ Params: <None>
+ 
+ 
++Name:   ilitek251x
++Info:   Enables I2C connected Ilitek 251x multiple touch controller using
++        GPIO 4 (pin 7 on GPIO header) for interrupt.
++Load:   dtoverlay=ilitek251x,<param>=<val>
++Params: interrupt               GPIO used for interrupt (default 4)
++        sizex                   Touchscreen size x, horizontal resolution of
++                                touchscreen (in pixels)
++        sizey                   Touchscreen size y, vertical resolution of
++                                touchscreen (in pixels)
++
++
+ Name:   iqaudio-dac
+ Info:   Configures the IQaudio DAC audio card
+ Load:   dtoverlay=iqaudio-dac,<param>
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ilitek251x-overlay.dts
+@@ -0,0 +1,45 @@
++// Device tree overlay for I2C connected Ilitek multiple touch controller
++/dts-v1/;
++/plugin/;
++
++ / {
++	compatible = "brcm,bcm2708";
++
++ 	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {		
++			ili251x_pins: ili251x_pins {
++				brcm,pins = <4>; // interrupt
++				brcm,function = <0>; // in
++				brcm,pull = <2>; // pull-up //
++			};
++		};
++	};
++
++ 	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++ 			ili251x: ili251x@41 {
++				compatible = "ilitek,ili251x";
++				reg = <0x41>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&ili251x_pins>;
++				interrupt-parent = <&gpio>;
++				interrupts = <4 8>; // high-to-low edge triggered
++				touchscreen-size-x = <16384>;
++				touchscreen-size-y = <9600>;
++			};
++		};
++	};
++
++ 	__overrides__ {
++		interrupt = <&ili251x_pins>,"brcm,pins:0",
++			<&ili251x>,"interrupts:0";
++		sizex = <&ili251x>,"touchscreen-size-x:0";
++		sizey = <&ili251x>,"touchscreen-size-y:0";
++	};
++};