Hi Lad,
On Tue, Mar 10, 2020 at 9:42 PM Lad Prabhakar
<prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx> wrote:
> From: Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>
>
> The HiHope RZ/G2M is advertised as compatible with panel idk-1110wr
> from Advantech, however the panel isn't sold alongside the board.
> A new dts, adding everything that's required to get the panel to
> work the HiHope RZ/G2M, is the most convenient way to support the
> HiHope RZ/G2M when it's connected to the idk-1110wr.
>
> Signed-off-by: Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>
> Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
Thanks for picking up this patch!
> --- /dev/null
> +++ b/arch/arm64/boot/dts/renesas/r8a774a1-hihope-rzg2m-ex-idk-1110wr.dts
> @@ -0,0 +1,86 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Device Tree Source for the HiHope RZ/G2M sub board connected to an
> + * Advantech IDK-1110WR 10.1" LVDS panel
> + *
> + * Copyright (C) 2020 Renesas Electronics Corp.
> + */
> +
> +#include "r8a774a1-hihope-rzg2m-ex.dts"
> +
> +/ {
> + backlight {
> + compatible = "pwm-backlight";
> + pwms = <&pwm0 0 50000>;
> +
> + brightness-levels = <0 2 8 16 32 64 128 255>;
> + default-brightness-level = <6>;
> + };
> +
> + panel-lvds {
> + compatible = "advantech,idk-1110wr", "panel-lvds";
> +
> + width-mm = <223>;
> + height-mm = <125>;
> +
> + data-mapping = "jeida-24";
> +
> + panel-timing {
> + /* 1024x600 @60Hz */
> + clock-frequency = <51200000>;
> + hactive = <1024>;
> + vactive = <600>;
> + hsync-len = <240>;
> + hfront-porch = <40>;
> + hback-porch = <40>;
> + vfront-porch = <15>;
> + vback-porch = <10>;
> + vsync-len = <10>;
> + };
> +
> + port {
> + panel_in: endpoint {
> + remote-endpoint = <&lvds0_out>;
> + };
> + };
> + };
I believe the plan was to include the existing
rzg2-advantech-idk-1110wr-panel.dtsi instead, to provide the
panel-lvds node...
> +};
> +
> +&gpio1 {
> + /*
> + * When GP1_20 is LOW LVDS0 is connected to the LVDS connector
> + * When GP1_20 is HIGH LVDS0 is connected to the LT8918L
> + */
> + lvds-connector-en-gpio {
> + gpio-hog;
> + gpios = <20 GPIO_ACTIVE_HIGH>;
> + output-low;
> + line-name = "lvds-connector-en-gpio";
> + };
> +};
> +
> +&lvds0 {
> + status = "okay";
> +
> + ports {
> + port@1 {
> + lvds0_out: endpoint {
> + remote-endpoint = <&panel_in>;
> + };
> + };
> + };
> +};
... and the lvds_connector endpoint configuration.
The rest looks good to me.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
