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62b7f5931c
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
170 lines
4.3 KiB
Diff
170 lines
4.3 KiB
Diff
From dde4afa87452e8499c611c9a889f4c5f35d9e2bb Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Thu, 3 Sep 2020 17:36:00 +0100
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Subject: [PATCH] overlays: Add adafruit18 and sainsmart18 overlays
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Add support for three ST7735R-based displays - adafruit18,
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adafruit18_green and sainsmart18.
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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arch/arm/boot/dts/overlays/Makefile | 2 +
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arch/arm/boot/dts/overlays/README | 15 ++++++
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.../boot/dts/overlays/adafruit18-overlay.dts | 49 +++++++++++++++++++
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.../boot/dts/overlays/sainsmart18-overlay.dts | 47 ++++++++++++++++++
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4 files changed, 113 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/adafruit18-overlay.dts
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create mode 100644 arch/arm/boot/dts/overlays/sainsmart18-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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@@ -4,6 +4,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += overlay_ma
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dtbo-$(CONFIG_ARCH_BCM2835) += \
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act-led.dtbo \
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+ adafruit18.dtbo \
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adau1977-adc.dtbo \
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adau7002-simple.dtbo \
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ads1015.dtbo \
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@@ -147,6 +148,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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rpi-tv.dtbo \
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rpivid-v4l2.dtbo \
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rra-digidac1-wm8741-audio.dtbo \
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+ sainsmart18.dtbo \
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sc16is750-i2c.dtbo \
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sc16is752-i2c.dtbo \
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sc16is752-spi0.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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@@ -261,6 +261,14 @@ Params: activelow Set to "
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REQUIRED
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+Name: adafruit18
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+Info: Overlay for the SPI-connected Adafruit 1.8" display (based on the
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+ ST7735R chip). It includes support for the "green tab" version.
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+Load: dtoverlay=adafruit18,<param>=<val>
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+Params: green Use the adafruit18_green variant.
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+ rotate Display rotation {0,90,180,270}
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+
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+
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Name: adau1977-adc
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Info: Overlay for activation of ADAU1977 ADC codec over I2C for control
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and I2S for data.
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@@ -2251,6 +2259,13 @@ Load: dtoverlay=rra-digidac1-wm8741-au
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Params: <None>
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+Name: sainsmart18
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+Info: Overlay for the SPI-connected Sainsmart 1.8" display (based on the
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+ ST7735R chip).
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+Load: dtoverlay=sainsmart18,<param>=<val>
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+Params: rotate Display rotation {0,90,180,270}
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+
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+
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Name: sc16is750-i2c
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Info: Overlay for the NXP SC16IS750 UART with I2C Interface
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Enables the chip on I2C1 at 0x48 (or the "addr" parameter value). To
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/adafruit18-overlay.dts
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@@ -0,0 +1,49 @@
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+/*
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+ * Device Tree overlay for Adafruit 1.8" TFT LCD with ST7735R chip 160x128
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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 = <&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@1 {
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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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+ status = "okay";
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+
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+ af18: adafruit18@0 {
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+ compatible = "fbtft,adafruit18";
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+ reg = <0>;
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+ pinctrl-names = "default";
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+ spi-max-frequency = <40000000>;
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+ rotate = <90>;
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+ buswidth = <8>;
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+ fps = <50>;
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+ height = <160>;
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+ width = <128>;
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+ reset-gpios = <&gpio 25 0>;
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+ dc-gpios = <&gpio 24 0>;
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+ led-gpios = <&gpio 18 0>;
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+ bgr;
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+ debug = <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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+ green = <&af18>, "compatible=fbtft,adafruit18_green";
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+ rotate = <&af18>, "rotate:0";
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+ };
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+};
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/sainsmart18-overlay.dts
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@@ -0,0 +1,47 @@
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+/*
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+ * Device Tree overlay for the Sainsmart 1.8" TFT LCD with ST7735R chip 160x128
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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 = <&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@1 {
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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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+ status = "okay";
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+
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+ ss18: sainsmart18@0 {
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+ compatible = "fbtft,sainsmart18";
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+ reg = <0>;
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+ pinctrl-names = "default";
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+ spi-max-frequency = <40000000>;
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+ rotate = <90>;
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+ buswidth = <8>;
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+ fps = <50>;
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+ height = <160>;
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+ width = <128>;
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+ reset-gpios = <&gpio 25 0>;
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+ dc-gpios = <&gpio 24 0>;
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+ bgr;
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+ debug = <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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+ rotate = <&ss18>, "rotate:0";
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+ };
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+};
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