lkml.org 
[lkml]   [2021]   [Feb]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 2/2] dt-bindings: display: Add "disable-hpd" binding
From
Date
Hi,

On 31/01/2021 10:57, Mykyta Poturai wrote:
> Add the "disable-hpd" binding, used to disable hotplug detected
> functionality in the driver. When it's enabled the driver assumes that
> the connector is always connected and disables the hotplug detect
> related IRQ.

DT describes the hardware, not the software behaviour.

So if the HPD is broken, then add a "snps,broken-hpd" instead, or if you want to force output, use the DRM mode forcing, which is handled by the dw-hdmi code:
https://wiki.archlinux.org/index.php/kernel_mode_setting#Forcing_modes

Neil

>
> Signed-off-by: Mykyta Poturai <ddone@aruko.org>
> ---
> .../devicetree/bindings/display/bridge/renesas,dw-hdmi.txt | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/renesas,dw-hdmi.txt b/Documentation/devicetree/bindings/display/bridge/renesas,dw-hdmi.txt
> index 3f6072651182..b2b899f46b86 100644
> --- a/Documentation/devicetree/bindings/display/bridge/renesas,dw-hdmi.txt
> +++ b/Documentation/devicetree/bindings/display/bridge/renesas,dw-hdmi.txt
> @@ -39,6 +39,7 @@ Optional properties:
>
> - power-domains: Shall reference the power domain that contains the DWC HDMI,
> if any.
> +- disable-hpd: Disables the hotplug detect feature
>
>
> Example:
>

\
 
 \ /
  Last update: 2021-02-08 10:38    [W:0.108 / U:1.732 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site