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a42a1706de
- Add support to build overlays for PiTFT22 in the kernel. - Setup a basic configuration for the driver The PiTFT22 support is optional and can be enabled by adding below in local.conf: MACHINE_FEATURES += "pitft pitft22" This patch also includes restructuring of kernel patches per kernel version specific directories. [Support #70] Signed-off-by: Petter Mabäcker <petter@technux.se> Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
111 lines
3.6 KiB
Diff
111 lines
3.6 KiB
Diff
From 2f44861e2a2d651a9aa62a75343a032fee33e93b Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petter=20Mab=C3=A4cker?= <petter@technux.se>
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Date: Fri, 8 Jan 2016 09:02:44 +0100
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Subject: [PATCH] dts: add overlay for pitft22 in linux 3.18
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Upstream-Status: Pending
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Add the pitft22 overlay from adafruit Adafruit-Pi-Kernel-o-Matic repo:
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https://github.com/adafruit/Adafruit-Pi-Kernel-o-Matic
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Signed-off-by: Petter Mabäcker <petter@technux.se>
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/pitft22-overlay.dts | 69 ++++++++++++++++++++++++++
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2 files changed, 70 insertions(+)
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create mode 100755 arch/arm/boot/dts/overlays/pitft22-overlay.dts
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diff --git a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
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index c766616..1eaaf81 100644
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -27,6 +27,7 @@ dtb-$(RPI_DT_OVERLAYS) += mcp2515-can0-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += mmc-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += mz61581-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += piscreen-overlay.dtb
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+dtb-$(RPI_DT_OVERLAYS) += pitft22-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += pitft28-resistive-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += pps-gpio-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += rpi-dac-overlay.dtb
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diff --git a/arch/arm/boot/dts/overlays/pitft22-overlay.dts b/arch/arm/boot/dts/overlays/pitft22-overlay.dts
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new file mode 100755
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index 0000000..894ba22
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/pitft22-overlay.dts
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@@ -0,0 +1,69 @@
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+/*
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+ * Device Tree overlay for pitft by Adafruit
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+ *
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+ */
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+
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
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+
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+ fragment@0 {
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+ target = <&spi0>;
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+ __overlay__ {
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+ status = "okay";
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+
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+ spidev@0{
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+ status = "disabled";
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+ };
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+
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+ spidev@1{
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+ status = "disabled";
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+ };
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+ };
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+ };
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+
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+ fragment@1 {
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+ target = <&gpio>;
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+ __overlay__ {
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+ pitft_pins: pitft_pins {
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+ brcm,pins = <25>;
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+ brcm,function = <1>; /* out */
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+ brcm,pull = <0>; /* none */
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+ };
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+ };
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+ };
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+
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+ fragment@2 {
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+ target = <&spi0>;
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+ __overlay__ {
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+ /* needed to avoid dtc warning */
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ pitft: pitft@0{
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+ compatible = "ilitek,ili9340";
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+ reg = <0>;
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&pitft_pins>;
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+
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+ spi-max-frequency = <32000000>;
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+ rotate = <90>;
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+ fps = <25>;
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+ bgr;
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+ buswidth = <8>;
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+ dc-gpios = <&gpio 25 0>;
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+ debug = <0>;
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+ };
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+
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+ };
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+ };
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+
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+ __overrides__ {
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+ speed = <&pitft>,"spi-max-frequency:0";
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+ rotate = <&pitft>,"rotate:0";
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+ fps = <&pitft>,"fps:0";
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+ debug = <&pitft>,"debug:0";
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+ };
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+};
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--
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1.9.1
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