Hi,
On Mon, Mar 04, 2024 at 05:04:54PM +0100, Jérémie Dautheribes wrote:
> Add support for Crystal Clear Technology CMT430B19N00 4.3" 480x272
> TFT-LCD panel.
>
> Signed-off-by: Jérémie Dautheribes <jeremie.dautheribes@xxxxxxxxxxx>
> ---
> drivers/gpu/drm/panel/panel-simple.c | 29 ++++++++++++++++++++++++++++
> 1 file changed, 29 insertions(+)
>
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index 20e3df1c59d4..b940220f56e2 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -1457,6 +1457,32 @@ static const struct panel_desc boe_hv070wsa = {
> .connector_type = DRM_MODE_CONNECTOR_LVDS,
> };
>
> +static const struct drm_display_mode cct_cmt430b19n00_mode = {
> + .clock = 9000,
> + .hdisplay = 480,
> + .hsync_start = 480 + 43,
> + .hsync_end = 480 + 43 + 8,
> + .htotal = 480 + 43 + 8 + 4,
> + .vdisplay = 272,
> + .vsync_start = 272 + 12,
> + .vsync_end = 272 + 12 + 8,
> + .vtotal = 272 + 12 + 8 + 4,
> + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
> +};
Your pixel clock doesn't really match the rest of the timings:
(480 + 43 + 8 + 4) * (272 + 12 + 8 + 4) * 60 = 9501600
So a ~6% deviation.
What does the datasheet say?
Maxime
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