Re: [PATCH v3 3/6] dt-bindings: add binding for Sitronix ST7586 display panels
From: Laurent Pinchart <hidden>
Date: 2017-08-04 14:54:15
Also in:
dri-devel, linux-arm-kernel, lkml
Hi David, Thank you for the patch. On Thursday 03 Aug 2017 17:33:47 David Lechner wrote:
quoted hunk ↗ jump to hunk
This adds a new binding for Sitronix ST7586 display panels. Using lego as the vendor prefix in the compatible string because the display panel I am working with is an integral part of the LEGO MINDSTORMS EV3. Signed-off-by: David Lechner <david-nq/r/kbU++upp/zk7JDF2g@public.gmane.org> --- .../bindings/display/sitronix,st7586.txt | 26 +++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/sitronix,st7586.txtdiff --git a/Documentation/devicetree/bindings/display/sitronix,st7586.txtb/Documentation/devicetree/bindings/display/sitronix,st7586.txt new file mode 100644 index 0000000..dfb0b7b--- /dev/null +++ b/Documentation/devicetree/bindings/display/sitronix,st7586.txt@@ -0,0 +1,26 @@ +Sitronix ST7586 display panel + +Required properties: +- compatible: "lego,ev3-lcd". + +The node for this driver must be a child node of a SPI controller, hence +all mandatory properties described in ../spi/spi-bus.txt must be specified. + +Optional properties: +- dc-gpios: D/C pin. The presence/absence of this GPIO determines + the panel interface operation mode (IF[3:1] pins): + - present: IF=011 4-wire 8-bit data serial interface + - absent: IF=010 3-wire 9-bit data serial interface
How does this work ? Do you have a single GPIO on your system connected to IF[1], with IF[3:2] hardwired to 01 ?
+- reset-gpios: Reset pin +- power-supply: A regulator node for the supply voltage. +- backlight: phandle of the backlight device attached to the panel +- rotation: panel rotation in degrees counter clockwise (0,90,180,270)
Please use the OF graph DT bindings (a.k.a. ports) to describe the connection between the panel and its source.
+Example:
+ display@0{
+ compatible = "lego,ev3-lcd";
+ reg = <0>;
+ spi-max-frequency = <10000000>;
+ dc-gpios = <&gpio 43 GPIO_ACTIVE_HIGH>;
+ reset-gpios = <&gpio 80 GPIO_ACTIVE_HIGH>;
+ };-- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html