1 files changed, 132 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0811-overlays-Add-ssd1306-spi-overlay-3440.patch b/target/linux/bcm27xx/patches-4.19/950-0811-overlays-Add-ssd1306-spi-overlay-3440.patch
new file mode 100644
index 0000000000..e27893d9ac
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0811-overlays-Add-ssd1306-spi-overlay-3440.patch
@@ -0,0 +1,132 @@
+From db048a80e63c66607b3bd73fa641802ec83bf166 Mon Sep 17 00:00:00 2001
+From: MikeDK <m.kaplan@evva.com>
+Date: Fri, 31 Jan 2020 10:57:21 +0100
+Subject: [PATCH] overlays: Add ssd1306-spi overlay (#3440)
+
+Add an overlay for SSD1306 based OLED boards using SPI.
+This will load the staging fbtft driver.
+
+Signed-off-by: Michael Kaplan <m.kaplan@evva.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             | 12 +++
+ .../boot/dts/overlays/ssd1306-spi-overlay.dts | 82 +++++++++++++++++++
+ 3 files changed, 95 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/ssd1306-spi-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -168,6 +168,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	spi6-1cs.dtbo \
+ 	spi6-2cs.dtbo \
+ 	ssd1306.dtbo \
++	ssd1306-spi.dtbo \
+ 	superaudioboard.dtbo \
+ 	sx150x.dtbo \
+ 	tc358743.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2428,6 +2428,18 @@ Params: address                 Location
+         https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf
+ 
+ 
++Name:   ssd1306-spi
++Info:   Overlay for SSD1306 OLED via SPI using fbtft staging driver.
++Load:   dtoverlay=ssd1306-spi,<param>=<val>
++Params: speed                   SPI bus speed (default 10000000)
++        rotate                  Display rotation (0, 90, 180 or 270; default 0)
++        fps                     Delay between frame updates (default 25)
++        debug                   Debug output level (0-7; default 0)
++        dc_pin                  GPIO pin for D/C (default 24)
++        reset_pin               GPIO pin for RESET (default 25)
++        height                  Display height (32 or 64; default 64)
++
++
+ Name:   superaudioboard
+ Info:   Configures the SuperAudioBoard sound card
+ Load:   dtoverlay=superaudioboard,<param>=<val>
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ssd1306-spi-overlay.dts
+@@ -0,0 +1,82 @@
++/*
++ * Device Tree overlay for SSD1306 based SPI OLED display
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			ssd1306_pins: ssd1306_pins {
++                                brcm,pins = <25 24>;
++                                brcm,function = <1 1>; /* out out */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			ssd1306: ssd1306@0{
++				compatible = "solomon,ssd1306";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&ssd1306_pins>;
++
++				spi-max-frequency = <10000000>;
++				bgr = <0>;
++				bpp = <1>;
++				rotate = <0>;
++				fps = <25>;
++				buswidth = <8>;
++				reset-gpios = <&gpio 25 0>;
++				dc-gpios = <&gpio 24 0>;
++				debug = <0>;
++
++				solomon,height = <64>;
++				solomon,width = <128>;
++				solomon,page-offset = <0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		speed		= <&ssd1306>,"spi-max-frequency:0";
++		rotate		= <&ssd1306>,"rotate:0";
++		fps		= <&ssd1306>,"fps:0";
++		debug		= <&ssd1306>,"debug:0";
++		dc_pin		= <&ssd1306>,"dc-gpios:4>";
++		reset_pin	= <&ssd1306>,"reset-gpios:4>";
++		height		= <&ssd1306>,"solomon,height:0>";
++	};
++};