Hi Chris,
I'm hijacking this discussion a bit.
I recently tried to boot maline on my Odroid GOA, which I managed to do,
except the display wasn't displaying anything :-)
Everything looks good on a quick look, the Inno PHY driver is here,
and there's a DRM card registered with the right mode 320x240 and
connected status (which I suppose doesn't mean much in this case).
Also, the backlight is on.
Looks like this is working for you, so I was wondering if maybe
this would ring a bell, or perhaps you're aware of any patches
we are missing in v5.11-rc7 (which is what I'm basing on).
Or maybe I'm missing some config?...
Any ideas would be welcome!
Ezequiel
On Fri, 12 Feb 2021 at 12:51, Chris Morgan <macromorgan@xxxxxxxxxxx> wrote:
>
> Update the panel to allow setting the rotation value in device tree.
>
> Signed-off-by: Chris Morgan <macromorgan@xxxxxxxxxxx>
> ---
> drivers/gpu/drm/panel/panel-elida-kd35t133.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/panel/panel-elida-kd35t133.c b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> index bc36aa3c1123..d8534406d1ef 100644
> --- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> +++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> @@ -42,6 +42,7 @@ struct kd35t133 {
> struct gpio_desc *reset_gpio;
> struct regulator *vdd;
> struct regulator *iovcc;
> + enum drm_panel_orientation orientation;
> bool prepared;
> };
>
> @@ -216,6 +217,7 @@ static int kd35t133_get_modes(struct drm_panel *panel,
> connector->display_info.width_mm = mode->width_mm;
> connector->display_info.height_mm = mode->height_mm;
> drm_mode_probed_add(connector, mode);
> + drm_connector_set_panel_orientation(connector, ctx->orientation);
>
> return 1;
> }
> @@ -258,6 +260,12 @@ static int kd35t133_probe(struct mipi_dsi_device *dsi)
> return ret;
> }
>
> + ret = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation);
> + if (ret < 0) {
> + dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, ret);
> + return ret;
> + }
> +
> mipi_dsi_set_drvdata(dsi, ctx);
>
> ctx->dev = dev;
> --
> 2.25.1
>
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