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7d7aa2fd92
This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Despite, since subtargets range from bcm2708 to bcm2711, it seems appropriate to use bcm27xx instead of bcm2708 (again, as already done for BOARDNAME). This also renames the packages brcm2708-userland and brcm2708-gpu-fw. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
133 lines
3.4 KiB
Diff
133 lines
3.4 KiB
Diff
From db048a80e63c66607b3bd73fa641802ec83bf166 Mon Sep 17 00:00:00 2001
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From: MikeDK <m.kaplan@evva.com>
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Date: Fri, 31 Jan 2020 10:57:21 +0100
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Subject: [PATCH] overlays: Add ssd1306-spi overlay (#3440)
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Add an overlay for SSD1306 based OLED boards using SPI.
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This will load the staging fbtft driver.
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Signed-off-by: Michael Kaplan <m.kaplan@evva.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 | 12 +++
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.../boot/dts/overlays/ssd1306-spi-overlay.dts | 82 +++++++++++++++++++
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3 files changed, 95 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/ssd1306-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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@@ -168,6 +168,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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spi6-1cs.dtbo \
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spi6-2cs.dtbo \
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ssd1306.dtbo \
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+ ssd1306-spi.dtbo \
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superaudioboard.dtbo \
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sx150x.dtbo \
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tc358743.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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@@ -2428,6 +2428,18 @@ Params: address Location
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https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf
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+Name: ssd1306-spi
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+Info: Overlay for SSD1306 OLED via SPI using fbtft staging driver.
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+Load: dtoverlay=ssd1306-spi,<param>=<val>
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+Params: speed SPI bus speed (default 10000000)
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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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+ height Display height (32 or 64; default 64)
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+
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+
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Name: superaudioboard
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Info: Configures the SuperAudioBoard sound card
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Load: dtoverlay=superaudioboard,<param>=<val>
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/ssd1306-spi-overlay.dts
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@@ -0,0 +1,82 @@
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+/*
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+ * Device Tree overlay for SSD1306 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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+ ssd1306_pins: ssd1306_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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+ ssd1306: ssd1306@0{
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+ compatible = "solomon,ssd1306";
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+ reg = <0>;
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&ssd1306_pins>;
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+
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+ spi-max-frequency = <10000000>;
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+ bgr = <0>;
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+ bpp = <1>;
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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 0>;
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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 = <128>;
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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 = <&ssd1306>,"spi-max-frequency:0";
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+ rotate = <&ssd1306>,"rotate:0";
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+ fps = <&ssd1306>,"fps:0";
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+ debug = <&ssd1306>,"debug:0";
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+ dc_pin = <&ssd1306>,"dc-gpios:4>";
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+ reset_pin = <&ssd1306>,"reset-gpios:4>";
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+ height = <&ssd1306>,"solomon,height:0>";
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+ };
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+};
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