Hi Doug,
Thank you for the patch.
On Thu, Apr 30, 2020 at 12:46:13PM -0700, Douglas Anderson wrote:
In the cases where there is no connector in a system there's no great place to put "hpd-gpios". As per discussion [1] the best place to put it is in the panel. Add this to the device tree bindings.
[1] https://lore.kernel.org/r/20200417180819.GE5861@pendragon.ideasonboard.com
Signed-off-by: Douglas Anderson dianders@chromium.org Reviewed-by: Stephen Boyd swboyd@chromium.org Reviewed-by: Linus Walleij linus.walleij@linaro.org
Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com
Changes in v4: None Changes in v3: None Changes in v2:
- ("dt-bindings: display: Add hpd-gpios to panel-common...") new for v2
.../devicetree/bindings/display/panel/panel-common.yaml | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/panel/panel-common.yaml b/Documentation/devicetree/bindings/display/panel/panel-common.yaml index ed051ba12084..e9a04a3a4f5f 100644 --- a/Documentation/devicetree/bindings/display/panel/panel-common.yaml +++ b/Documentation/devicetree/bindings/display/panel/panel-common.yaml @@ -96,6 +96,12 @@ properties: (hot plug detect) signal, but the signal isn't hooked up so we should hardcode the max delay from the panel spec when powering up the panel.
hpd-gpios:
maxItems: 1
description:
If Hot Plug Detect (HPD) is connected to a GPIO in the system ratherthan a dedicated HPD pin the pin can be specified here.# Control I/Os
# Many display panels can be controlled through pins driven by GPIOs. The nature