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-rw-r--r--target/linux/brcm2708/patches-4.4/0238-BCM270X_DT-Add-dpi24-overlay.patch74
1 files changed, 74 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0238-BCM270X_DT-Add-dpi24-overlay.patch b/target/linux/brcm2708/patches-4.4/0238-BCM270X_DT-Add-dpi24-overlay.patch
new file mode 100644
index 0000000000..7b5fc16fcc
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0238-BCM270X_DT-Add-dpi24-overlay.patch
@@ -0,0 +1,74 @@
+From 3533e797aaf506f1e81a3b53bf04ce9592005756 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 5 Apr 2016 13:01:54 +0100
+Subject: [PATCH 238/304] BCM270X_DT: Add dpi24 overlay
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/Makefile | 1 +
+ arch/arm/boot/dts/overlays/README | 8 +++++++
+ arch/arm/boot/dts/overlays/dpi24-overlay.dts | 31 ++++++++++++++++++++++++++++
+ 3 files changed, 40 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/dpi24-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -15,6 +15,7 @@ endif
+ dtbo-$(RPI_DT_OVERLAYS) += ads7846.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += at86rf233.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor.dtbo
++dtbo-$(RPI_DT_OVERLAYS) += dpi24.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += dwc2.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += dwc-otg.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += dht11.dtbo
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -213,6 +213,14 @@ Params: gpiopin GPIO con
+ (default 4)
+
+
++Name: dpi24
++Info: Overlay for a generic 24-bit DPI display
++ This uses GPIOs 0-27 (so no I2C, uart etc.), and activates the output
++ 2-3 seconds after the kernel has started.
++Load: dtoverlay=dpi24
++Params: <None>
++
++
+ Name: dwc-otg
+ Info: Selects the dwc_otg USB controller driver which has fiq support. This
+ is the default on all except the Pi Zero which defaults to dwc2.
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/dpi24-overlay.dts
+@@ -0,0 +1,31 @@
++/dts-v1/;
++/plugin/;
++
++/{
++ compatible = "brcm,bcm2708";
++
++ // There is no DPI driver module, but we need a platform device
++ // node (that doesn't already use pinctrl) to hang the pinctrl
++ // reference on - leds will do
++
++ fragment@0 {
++ target = <&leds>;
++ __overlay__ {
++ pinctrl-names = "default";
++ pinctrl-0 = <&dpi24_pins>;
++ };
++ };
++
++ fragment@1 {
++ target = <&gpio>;
++ __overlay__ {
++ dpi24_pins: dpi24_pins {
++ brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
++ 12 13 14 15 16 17 18 19 20
++ 21 22 23 24 25 26 27>;
++ brcm,function = <6>; /* alt2 */
++ brcm,pull = <0>; /* no pull */
++ };
++ };
++ };
++};