From 9943981aa3ab7841186827fce2177279c766b6df Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Fri, 14 Jul 2023 03:37:52 +0200 Subject: 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 Acked-by: Krzysztof Kozlowski Reviewed-by: Sebastian Reichel Tested-by: Sebastian Reichel Signed-off-by: Sebastian Reichel Signed-off-by: Neil Armstrong Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-16-sre@kernel.org --- Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'Documentation/devicetree') 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 -- cgit