130 lines
4.4 KiB
Diff
130 lines
4.4 KiB
Diff
From 32a85be60c722eff17ccade5d3e12971aad15f61 Mon Sep 17 00:00:00 2001
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From: Alex Kurichenko <oleksandr.kurichenko@deluxe.com>
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Date: Tue, 1 Jun 2021 01:53:47 +0300
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Subject: [PATCH] overlays: Add ssd1331-spi support for OLED screen
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Signed-off-by: Alex Kurichenko <oleksandr.kurichenko@deluxe.com>
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 11 +++
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.../boot/dts/overlays/ssd1331-spi-overlay.dts | 83 +++++++++++++++++++
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3 files changed, 95 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/ssd1331-spi-overlay.dts
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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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@@ -196,6 +196,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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spi6-2cs.dtbo \
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ssd1306.dtbo \
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ssd1306-spi.dtbo \
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+ ssd1331-spi.dtbo \
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ssd1351-spi.dtbo \
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superaudioboard.dtbo \
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sx150x.dtbo \
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -3015,6 +3015,17 @@ Params: speed SPI bus
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height Display height (32 or 64; default 64)
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+Name: ssd1331-spi
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+Info: Overlay for SSD1331 OLED via SPI using fbtft staging driver.
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+Load: dtoverlay=ssd1331-spi,<param>=<val>
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+Params: speed SPI bus speed (default 4500000)
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+ rotate Display rotation (0, 90, 180 or 270; default 0)
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+ fps Delay between frame updates (default 25)
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+ debug Debug output level (0-7; default 0)
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+ dc_pin GPIO pin for D/C (default 24)
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+ reset_pin GPIO pin for RESET (default 25)
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+
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+
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Name: ssd1351-spi
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Info: Overlay for SSD1351 OLED via SPI using fbtft staging driver.
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Load: dtoverlay=ssd1351-spi,<param>=<val>
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/ssd1331-spi-overlay.dts
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@@ -0,0 +1,83 @@
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+/*
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+ * Device Tree overlay for SSD1331 based SPI OLED display
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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";
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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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+ };
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+
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+ fragment@1 {
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+ target = <&spidev0>;
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+ __overlay__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ fragment@2 {
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+ target = <&spidev1>;
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+ __overlay__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ fragment@3 {
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+ target = <&gpio>;
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+ __overlay__ {
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+ ssd1331_pins: ssd1331_pins {
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+ brcm,pins = <25 24>;
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+ brcm,function = <1 1>; /* out out */
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+ };
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+ };
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+ };
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+
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+ fragment@4 {
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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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+ ssd1331: ssd1331@0{
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+ compatible = "solomon,ssd1331";
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+ reg = <0>;
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&ssd1331_pins>;
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+
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+ spi-max-frequency = <4500000>;
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+ bgr = <0>;
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+ bpp = <16>;
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+ rotate = <0>;
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+ fps = <25>;
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+ buswidth = <8>;
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+ reset-gpios = <&gpio 25 1>;
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+ dc-gpios = <&gpio 24 0>;
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+ debug = <0>;
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+
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+ solomon,height = <64>;
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+ solomon,width = <96>;
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+ solomon,page-offset = <0>;
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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 = <&ssd1331>,"spi-max-frequency:0";
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+ rotate = <&ssd1331>,"rotate:0";
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+ fps = <&ssd1331>,"fps:0";
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+ debug = <&ssd1331>,"debug:0";
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+ dc_pin = <&ssd1331>,"dc-gpios:4",
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+ <&ssd1331_pins>,"brcm,pins:4";
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+ reset_pin = <&ssd1331>,"reset-gpios:4",
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+ <&ssd1331_pins>,"brcm,pins:0";
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+ };
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+};
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