From e0a2d28dadbb8c41f4e4b7eb46658b79f63e23bf Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Petter=20Mab=C3=A4cker?= Date: Fri, 8 Jan 2016 09:02:44 +0100 Subject: [PATCH] dts: add overlay for pitft22 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add the pitft22 overlay from adafruit Adafruit-Pi-Kernel-o-Matic repo: https://github.com/adafruit/Adafruit-Pi-Kernel-o-Matic Signed-off-by: Petter Mabäcker Signed-off-by: Andrei Gherzan --- arch/arm/boot/dts/overlays/Makefile | 1 + arch/arm/boot/dts/overlays/README | 12 +++++ arch/arm/boot/dts/overlays/pitft22-overlay.dts | 69 ++++++++++++++++++++++++++ 3 files changed, 82 insertions(+) create mode 100644 arch/arm/boot/dts/overlays/pitft22-overlay.dts --- a/arch/arm/boot/dts/overlays/Makefile +++ b/arch/arm/boot/dts/overlays/Makefile @@ -51,6 +51,7 @@ dtbo-$(RPI_DT_OVERLAYS) += pi3-disable-b dtbo-$(RPI_DT_OVERLAYS) += pi3-miniuart-bt.dtbo dtbo-$(RPI_DT_OVERLAYS) += piscreen.dtbo dtbo-$(RPI_DT_OVERLAYS) += piscreen2r.dtbo +dtbo-$(RPI_DT_OVERLAYS) += pitft22.dtbo dtbo-$(RPI_DT_OVERLAYS) += pitft28-capacitive.dtbo dtbo-$(RPI_DT_OVERLAYS) += pitft28-resistive.dtbo dtbo-$(RPI_DT_OVERLAYS) += pps-gpio.dtbo --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -644,6 +644,18 @@ Params: speed Display xohms Touchpanel sensitivity (X-plate resistance) +Name: pitft22 +Info: Adafruit PiTFT 2.2" screen +Load: dtoverlay=pitft22,= +Params: speed Display SPI bus speed + + rotate Display rotation {0,90,180,270} + + fps Delay between frame updates + + debug Debug output level {0-7} + + Name: pitft28-capacitive Info: Adafruit PiTFT 2.8" capacitive touch screen Load: dtoverlay=pitft28-capacitive,= --- /dev/null +++ b/arch/arm/boot/dts/overlays/pitft22-overlay.dts @@ -0,0 +1,69 @@ +/* + * Device Tree overlay for pitft by Adafruit + * + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&spi0>; + __overlay__ { + status = "okay"; + + spidev@0{ + status = "disabled"; + }; + + spidev@1{ + status = "disabled"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + pitft_pins: pitft_pins { + brcm,pins = <25>; + brcm,function = <1>; /* out */ + brcm,pull = <0>; /* none */ + }; + }; + }; + + fragment@2 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + + pitft: pitft@0{ + compatible = "ilitek,ili9340"; + reg = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&pitft_pins>; + + spi-max-frequency = <32000000>; + rotate = <90>; + fps = <25>; + bgr; + buswidth = <8>; + dc-gpios = <&gpio 25 0>; + debug = <0>; + }; + + }; + }; + + __overrides__ { + speed = <&pitft>,"spi-max-frequency:0"; + rotate = <&pitft>,"rotate:0"; + fps = <&pitft>,"fps:0"; + debug = <&pitft>,"debug:0"; + }; +};