Re: [PATCH 2/4] drm/panel: simple: Add support for the Lemaker BL035 3.5" LCD

From: Maxime Ripard
Date: Wed Oct 10 2018 - 10:59:05 EST


On Wed, Oct 10, 2018 at 01:41:32PM +0200, Paul Kocialkowski wrote:
> This adds support for the 3.5" LCD panel from Lemaker, sold for use with
> BananaPi boards. It comes with a 24-bit RGB888 parallel interface and
> requires an active-low DE signal
>
> Signed-off-by: Paul Kocialkowski <contact@xxxxxxxx>
> ---
> drivers/gpu/drm/panel/panel-simple.c | 27 +++++++++++++++++++++++++++
> 1 file changed, 27 insertions(+)
>
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index 97964f7f2ace..229080fcf65e 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -1461,6 +1461,30 @@ static const struct panel_desc kyo_tcg121xglp = {
> .bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
> };
>
> +static const struct drm_display_mode lemaker_bl035_mode = {
> + .clock = 7000,
> + .hdisplay = 320,
> + .hsync_start = 320 + 20,
> + .hsync_end = 320 + 20 + 30,
> + .htotal = 320 + 20 + 30 + 38,
> + .vdisplay = 240,
> + .vsync_start = 240 + 4,
> + .vsync_end = 240 + 4 + 3,
> + .vtotal = 240 + 4 + 3 + 15,
> + .vrefresh = 60,
> +};
> +
> +static const struct panel_desc lemaker_bl035 = {
> + .modes = &lemaker_bl035_mode,
> + .num_modes = 1,
> + .size = {
> + .width = 70,
> + .height = 52,
> + },
> + .bus_format = MEDIA_BUS_FMT_RGB888_1X24,
> + .bus_flags = DRM_BUS_FLAG_DE_LOW,
> +};
> +
> static const struct drm_display_mode lg_lb070wv8_mode = {
> .clock = 33246,
> .hdisplay = 800,
> @@ -2456,6 +2480,9 @@ static const struct of_device_id platform_of_match[] = {
> }, {
> .compatible = "kyo,tcg121xglp",
> .data = &kyo_tcg121xglp,
> + }, {
> + .compatible = "lemaker,bl035",
> + .data = &lemaker_bl035,

You should document that new compatible. Also, where is this name
coming from? Is it the name it's sold under? something you came up
with?

Thanks,
Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com