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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2023-07-14 03:37:52 +0200 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2023-08-01 10:29:58 +0200 |
| commit | 9943981aa3ab7841186827fce2177279c766b6df (patch) | |
| tree | 8398a626df957aa44bf3d89d861d59326f106258 | |
| parent | dt-bindings: display: st7789v: Add the edt,et028013dma panel compatible (diff) | |
| download | linux-9943981aa3ab7841186827fce2177279c766b6df.tar.xz linux-9943981aa3ab7841186827fce2177279c766b6df.zip | |
dt-bindings: display: st7789v: bound the number of Rx data lines
The ST7789V LCD controller supports regular SPI wiring, as well as no Rx
data line at all. The operating system needs to know whether it can read
registers from the device or not. Let's detail this specific design
possibility by bounding the spi-rx-bus-width property.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-16-sre@kernel.org
| -rw-r--r-- | Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml b/Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml index 9f4157b02b84..905c064cd106 100644 --- a/Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml +++ b/Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml @@ -29,6 +29,10 @@ properties: spi-cpha: true spi-cpol: true + spi-rx-bus-width: + minimum: 0 + maximum: 1 + dc-gpios: maxItems: 1 description: DCX pin, Display data/command selection pin in parallel interface |