On Mon, Jul 08, 2019 at 04:56:17PM +0200, Josef Lusticky wrote:
> ILI9341 supports both SPI input mode and parallel RGB input mode.
> This commit adds parallel RGB input mode bindings.
>
> Signed-off-by: Josef Lusticky <josef@xxxxxxxxxxx>
> ---
> .../bindings/display/ilitek,ili9341.txt | 67 ++++++++++++++++---
> 1 file changed, 56 insertions(+), 11 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/display/ilitek,ili9341.txt b/Documentation/devicetree/bindings/display/ilitek,ili9341.txt
> index 169b32e4ee4e..629f38a1d0cd 100644
> --- a/Documentation/devicetree/bindings/display/ilitek,ili9341.txt
> +++ b/Documentation/devicetree/bindings/display/ilitek,ili9341.txt
> @@ -1,27 +1,72 @@
> Ilitek ILI9341 display panels
>
> -This binding is for display panels using an Ilitek ILI9341 controller in SPI
> -mode.
> +This binding is for display panels using an Ilitek ILI9341 controller.
> +The display panels are supported in the following graphical input modes:
> +- SPI input mode
> + MIPI-DBI Type 3 Option 1 or Option 3 is used to transfer
> + commands and graphical data
> +- parallel RGB input mode
> + MIPI-DBI Type 3 Option 1 or Option 3 is used for commands
> + MIPI-DPI 18-bit parallel RGB connection is used to transfer
> + graphical data
>
> -Required properties:
> -- compatible: "adafruit,yx240qv29", "ilitek,ili9341"
> -- dc-gpios: D/C pin
> -- reset-gpios: Reset pin
> +
> +SPI input mode:
>
> 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.
> +all mandatory properties described in spi/spi-bus.txt must be specified.
> +
> +Required properties in SPI input mode:
> +- compatible: "adafruit,yx240qv29", "ilitek,ili9341"
> +- backlight: phandle of the backlight device attached to the panel
Why is backlight now required?
> +
> +Optional properties in SPI input mode:
> +- rotation: panel rotation in degrees counter clockwise (0,90,180,270)
> +- dc-gpios: GPIO spec for the D/C pin, see gpio/gpio.txt
> +- reset-gpios: GPIO spec for the reset pin, see gpio/gpio.txt
> +
> +
> +Parallel RGB input mode:
> +
> +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.
> +
> +Required properties in parallel RGB input mode:
> +- compatible: "displaytech,dt024ctft", "ilitek,ili9341"
> +- backlight: phandle of the backlight device attached to the panel
> +
> +Optional properties in parallel RGB input mode:
> +- dc-gpios: GPIO spec for the D/C pin, see gpio/gpio.txt
> +- reset-gpios: GPIO spec for the reset pin, see gpio/gpio.txt
>
> -Optional properties:
> -- rotation: panel rotation in degrees counter clockwise (0,90,180,270)
> -- backlight: phandle of the backlight device attached to the panel
> +In parallel RGB input mode,
> +the device node can contain one 'port' child node with one child
> +'endpoint' node, according to the bindings defined in
> +media/video-interfaces.txt. This node should describe panel's video bus.
>
> -Example:
> +
> +Example in SPI input mode:
> display@0{
> compatible = "adafruit,yx240qv29", "ilitek,ili9341";
> reg = <0>;
> spi-max-frequency = <32000000>;
> dc-gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>;
> reset-gpios = <&gpio0 8 GPIO_ACTIVE_HIGH>;
> + backlight = <&backlight>;
> rotation = <270>;
> + };
> +
> +Example in parallel RGB input mode:
> + panel@{
> + compatible = "displaytech,dt024ctft", "ilitek,ili9341";
> + reg = <0>;
> + spi-max-frequency = <32000000>;
> + dc-gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>;
> + reset-gpios = <&gpio0 8 GPIO_ACTIVE_HIGH>;
> backlight = <&backlight>;
> + port {
> + panel_in: endpoint {
> + remote-endpoint = <&display_out>;
> + };
> + };
> };
> --
> 2.20.1
>
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