diff mbox series

[v4,1/4] dt-bindings: display: bridge: sn65dsi83: Make enable GPIO optional

Message ID 20211118091955.3009900-2-alexander.stein@ew.tq-group.com (mailing list archive)
State New, archived
Headers show
Series ti-sn65dsi83 patches | expand

Commit Message

Alexander Stein Nov. 18, 2021, 9:19 a.m. UTC 
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

The SN65DSI8x EN signal may be tied to VCC, or otherwise controlled by
means not available to the kernel. Make the GPIO optional.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
---
 .../devicetree/bindings/display/bridge/ti,sn65dsi83.yaml         | 1 -
 1 file changed, 1 deletion(-)

Comments

Jagan Teki Dec. 9, 2021, 7:07 a.m. UTC | #1 
On Thu, Nov 18, 2021 at 2:50 PM Alexander Stein
<alexander.stein@ew.tq-group.com> wrote:
>
> From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
>
> The SN65DSI8x EN signal may be tied to VCC, or otherwise controlled by
> means not available to the kernel. Make the GPIO optional.

Sorry, I couldn't understand what it means. Does it mean VCC enabled
designs no need to enable GPIO? I've a design that do support both EN
and VCC.

Jagan.
Alexander Stein Dec. 9, 2021, 12:23 p.m. UTC | #2 
Am Donnerstag, dem 09.12.2021 um 12:37 +0530 schrieb Jagan Teki:
> On Thu, Nov 18, 2021 at 2:50 PM Alexander Stein
> <
> alexander.stein@ew.tq-group.com
> > wrote:
> > From: Laurent Pinchart <
> > laurent.pinchart@ideasonboard.com
> > >
> > 
> > The SN65DSI8x EN signal may be tied to VCC, or otherwise controlled
> > by
> > means not available to the kernel. Make the GPIO optional.
> 
> Sorry, I couldn't understand what it means. Does it mean VCC enabled
> designs no need to enable GPIO? I've a design that do support both EN
> and VCC.

The patches 1 & 2 are only about the "enable" gpio for the bridge, it's
unrelated to the VCC regulator introduced in patch 3 & 4.
Maybe the commit message should say:
> The SN65DSI8x EN signal may be hard-wired to VCC, or otherwise
controlled[...]
But I copied the message from bbda1704fc15 ("drm/bridge: ti-sn65dsi86:
Make enable GPIO optional").

This is for use-cases where there is no GPIO the kernel can use, to
control the EN pad of the bridge. Thus make this gpio optional in
bindings and driver.

HTH
Alexander
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml
index b446d0f0f1b4..c3f3e73f740a 100644
--- a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml
@@ -91,7 +91,6 @@  properties:
 required:
   - compatible
   - reg
-  - enable-gpios
   - ports
 
 allOf: