brcm2708: update to latest patches from RPi foundation

[openwrt/openwrt.git] / target / linux / brcm2708 / patches-4.19 / 950-0364-BCM2708-Add-core-Device-Tree-support-ilitek251x.patch

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 (file)
index 0000000..0967821
--- /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";
++      };
++};