diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0268-overlays-Add-ssd1306-overlay-for-OLED-display.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0268-overlays-Add-ssd1306-overlay-for-OLED-display.patch | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0268-overlays-Add-ssd1306-overlay-for-OLED-display.patch b/target/linux/brcm2708/patches-4.19/950-0268-overlays-Add-ssd1306-overlay-for-OLED-display.patch new file mode 100644 index 0000000000..967cc76442 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0268-overlays-Add-ssd1306-overlay-for-OLED-display.patch @@ -0,0 +1,104 @@ +From d8eac0d3e4f6c6f9e5f789c8e2288699b2afebcb Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Mon, 21 Jan 2019 21:17:27 +0000 +Subject: [PATCH] overlays: Add ssd1306 overlay for OLED display + +See: https://github.com/raspberrypi/firmware/issues/1098 + +Signed-off-by: mincepi <mincepi@gmail.com> +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 31 ++++++++++++++++ + .../arm/boot/dts/overlays/ssd1306-overlay.dts | 36 +++++++++++++++++++ + 3 files changed, 68 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/ssd1306-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -135,6 +135,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + spi2-1cs.dtbo \ + spi2-2cs.dtbo \ + spi2-3cs.dtbo \ ++ ssd1306.dtbo \ + superaudioboard.dtbo \ + sx150x.dtbo \ + tc358743.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -1950,6 +1950,37 @@ Params: cs0_pin GPIO pin + is 'okay' or enabled). + + ++Name: ssd1306 ++Info: Overlay for activation of SSD1306 over I2C OLED display framebuffer. ++Load: dtoverlay=ssd1306,<param>=<val> ++Params: address Location in display memory of first character. ++ (default=0) ++ width Width of display. (default=128) ++ height Height of display. (default=64) ++ offset virtual channel a. (default=0) ++ normal Has no effect on displays tested. (default=not ++ set) ++ sequential Set this if every other scan line is missing. ++ (default=not set) ++ remapped Set this if display is garbled. (default=not ++ set) ++ inverted Set this if display is inverted and mirrored. ++ (default=not set) ++ ++ Examples: ++ Typical usage for 128x64 display: dtoverlay=ssd1306,inverted ++ ++ Typical usage for 128x32 display: dtoverlay=ssd1306,inverted,sequential ++ ++ i2c_baudrate=400000 will speed up the display. ++ ++ i2c_baudrate=1000000 seems to work even though it's not officially ++ supported by the hardware, and is faster still. ++ ++ For more information refer to the device datasheet at: ++ https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf ++ ++ + Name: superaudioboard + Info: Configures the SuperAudioBoard sound card + Load: dtoverlay=superaudioboard,<param>=<val> +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/ssd1306-overlay.dts +@@ -0,0 +1,36 @@ ++// Overlay for SSD1306 128x64 and 128x32 OLED displays ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2718"; ++ ++ fragment@0 { ++ target = <&i2c1>; ++ __overlay__ { ++ status = "okay"; ++ ++ #address-cells = <1>; ++ #size-cells = <0>; ++ ++ ssd1306: oled@3c{ ++ compatible = "solomon,ssd1306fb-i2c"; ++ reg = <0x3c>; ++ solomon,width = <128>; ++ solomon,height = <64>; ++ solomon,page-offset = <0>; ++ }; ++ }; ++ }; ++ ++ __overrides__ { ++ address = <&ssd1306>,"reg:0"; ++ width = <&ssd1306>,"solomon,width:0"; ++ height = <&ssd1306>,"solomon,height:0"; ++ offset = <&ssd1306>,"solomon,page-offset:0"; ++ normal = <&ssd1306>,"solomon,segment-no-remap?"; ++ sequential = <&ssd1306>,"solomon,com-seq?"; ++ remapped = <&ssd1306>,"solomon,com-lrremap?"; ++ inverted = <&ssd1306>,"solomon,com-invdir?"; ++ }; ++}; |