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SubjectRe: [PATCH 5/6] drm/panel: simple: Innolux TV123WAM is actually P120ZDG-BF1
On Mon, Oct 22, 2018 at 01:46:38PM -0700, Douglas Anderson wrote:
> As far as I can tell the panel that was added in commit da50bd4258db
> ("drm/panel: simple: Add Innolux TV123WAM panel driver support")
> wasn't actually an Innolux TV123WAM but was actually an Innolux
> P120ZDG-BF1.
>
> As far as I can tell the Innolux TV123WAM isn't a real panel and but
> it's a mosh between the TI TV123WAM and the Innolux P120ZDG-BF1.
> Let's unmosh.
>
> Here's my evidence:
>
> * Searching for TV123WAM on the Internet turns up a TI panel. While
> it's possible that an Innolux panel has the same model number as the
> TI Panel, it seems a little doubtful. Looking up the datasheet from
> the TI Panel shows that it's 1920 x 1280 and 259.2 mm x 172.8 mm.
>
> * As far as I know, the patch adding the Innolux Panel was supposed to
> be for the board that's sitting in front of me as I type this
> (support for that board is not yet upstream). On the back of that
> panel I see Innolux P120ZDZ-EZ1 rev B1.
>
> * Someone pointed me at a datasheet that's supposed to be for the
> panel in front of me (sorry, I can't share the datasheet). That
> datasheet has the string "p120zdg-bf1"
>
> * If I search for "P120ZDG-BF1" on the Internet I get hits for panels
> that are 2160x1440. They don't have datasheets, but the fact that
> the resolution matches is a good sign.
>
> In any case, let's update the name and also the physical size to match
> the correct panel.
>
> Fixes: da50bd4258db ("drm/panel: simple: Add Innolux TV123WAM panel driver support")
> Signed-off-by: Douglas Anderson <dianders@chromium.org>
> Cc: Sandeep Panda <spanda@codeaurora.org>
> ---
>
> drivers/gpu/drm/panel/panel-simple.c | 14 +++++++-------
> 1 file changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index 937e97490c30..7ee1abc5d81b 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -1370,7 +1370,7 @@ static const struct panel_desc innolux_n156bge_l21 = {
> },
> };
>
> -static const struct drm_display_mode innolux_tv123wam_mode = {
> +static const struct drm_display_mode innolux_p120zdg_bf1_mode = {
> .clock = 206016,
> .hdisplay = 2160,
> .hsync_start = 2160 + 48,
> @@ -1384,13 +1384,13 @@ static const struct drm_display_mode innolux_tv123wam_mode = {
> .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
> };
>
> -static const struct panel_desc innolux_tv123wam = {
> - .modes = &innolux_tv123wam_mode,
> +static const struct panel_desc innolux_p120zdg_bf1 = {
> + .modes = &innolux_p120zdg_bf1_mode,
> .num_modes = 1,
> .bpc = 8,
> .size = {
> - .width = 259,
> - .height = 173,
> + .width = 254,
> + .height = 169,
> },
> .delay = {
> .prepare = 200,
> @@ -2454,8 +2454,8 @@ static const struct of_device_id platform_of_match[] = {
> .compatible = "innolux,n156bge-l21",
> .data = &innolux_n156bge_l21,
> }, {
> - .compatible = "innolux,tv123wam",

I think we should update the struct, but we might want to keep this around.
Given the tv123wam panel is TI, we're likely not going to have a collision on
innolux,...

That said, I'll defer to robh on this one, I'm not sure if changing names is
cool once the bindings have hit mainline.

> - .data = &innolux_tv123wam,
> + .compatible = "innolux,p120zdg-bf1",
> + .data = &innolux_p120zdg_bf1,
> }, {
> .compatible = "innolux,zj070na-01p",
> .data = &innolux_zj070na_01p,
> --
> 2.19.1.568.g152ad8e336-goog
>

--
Sean Paul, Software Engineer, Google / Chromium OS

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