mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
133 lines
3.4 KiB
Diff
133 lines
3.4 KiB
Diff
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>";
|
|
+ };
|
|
+};
|