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Subject[PATCH v3 2/5] dt-bindings: display: ssd1307fb: Extend schema for SPI controllers
Date
The Solomon SSD130x OLED displays can either have an I2C or SPI interface,
add to the schema the properties and examples for OLED devices under SPI.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v3:
- Add a comment to the properties required for SPI (Geert Uytterhoeven)

Changes in v2:
- Don't add compatible strings with an "-spi" suffix (Geert Uytterhoeven)

.../bindings/display/solomon,ssd1307fb.yaml | 38 ++++++++++++++++++-
1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/solomon,ssd1307fb.yaml b/Documentation/devicetree/bindings/display/solomon,ssd1307fb.yaml
index 7653b6c3fcb6..7d7de92df86f 100644
--- a/Documentation/devicetree/bindings/display/solomon,ssd1307fb.yaml
+++ b/Documentation/devicetree/bindings/display/solomon,ssd1307fb.yaml
@@ -38,9 +38,16 @@ properties:
reset-gpios:
maxItems: 1

+ # Only required for SPI
+ dc-gpios:
+ maxItems: 1
+
vbat-supply:
description: The supply for VBAT

+ # Only required for SPI
+ spi-max-frequency: true
+
solomon,height:
$ref: /schemas/types.yaml#/definitions/uint32
default: 16
@@ -220,14 +227,14 @@ examples:
#address-cells = <1>;
#size-cells = <0>;

- ssd1307: oled@3c {
+ ssd1307_i2c: oled@3c {
compatible = "solomon,ssd1307";
reg = <0x3c>;
pwms = <&pwm 4 3000>;
reset-gpios = <&gpio2 7>;
};

- ssd1306: oled@3d {
+ ssd1306_i2c: oled@3d {
compatible = "solomon,ssd1306";
reg = <0x3c>;
pwms = <&pwm 4 3000>;
@@ -238,3 +245,30 @@ examples:
solomon,lookup-table = /bits/ 8 <0x3f 0x3f 0x3f 0x3f>;
};
};
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ssd1307_spi: oled@0 {
+ compatible = "solomon,ssd1307";
+ reg = <0x0>;
+ pwms = <&pwm 4 3000>;
+ reset-gpios = <&gpio2 7>;
+ dc-gpios = <&gpio2 8>;
+ spi-max-frequency = <10000000>;
+ };
+
+ ssd1306_spi: oled@1 {
+ compatible = "solomon,ssd1306";
+ reg = <0x1>;
+ pwms = <&pwm 4 3000>;
+ reset-gpios = <&gpio2 7>;
+ dc-gpios = <&gpio2 8>;
+ spi-max-frequency = <10000000>;
+ solomon,com-lrremap;
+ solomon,com-invdir;
+ solomon,com-offset = <32>;
+ solomon,lookup-table = /bits/ 8 <0x3f 0x3f 0x3f 0x3f>;
+ };
+ };
--
2.35.1
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