[PATCH v5 1/7] dt-bindings: Add panel-timing subnode to simple-panel

Douglas Anderson
2019-04-01T17:17:57Z

From: Sean Paul <seanpaul@chromium.org>

This patch adds a new subnode to simple-panel allowing us to override
the typical timing expressed in the panel's display_timing.

Changes in v2:
- Split out the binding into a new patch (Rob)
- display-timings is a new section (Rob)
- Use the full display-timings subnode instead of picking the timing
out (Rob/Thierry)
Changes in v3:
- Go back to using the timing subnode directly, but rename to
panel-timing (Rob)
Changes in v4:
- Simplify desc. for when override should be used (Thierry/Laurent)
- Removed Rob H review since it's been a year and wording changed
Changes in v5:
- Removed bit about OS may ignore (Rob/Ezequiel)

Cc: Doug Anderson <dianders@chromium.org>
Cc: Eric Anholt <eric@anholt.net>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Jeffy Chen <jeffy.chen@rock-chips.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Stéphane Marchesin <marcheu@chromium.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: devicetree@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-rockchip@lists.infradead.org
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

.../bindings/display/panel/simple-panel.txt | 22 +++++++++++++++++++
1 file changed, 22 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/simple-panel.txt b/Documentation/devicetree/bindings/display/panel/simple-panel.txt
index b2b872c710f2..93882268c0b9 100644
--- a/Documentation/devicetree/bindings/display/panel/simple-panel.txt
+++ b/Documentation/devicetree/bindings/display/panel/simple-panel.txt
@@ -15,6 +15,16 @@ Optional 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.

+panel-timing subnode
+--------------------
+
+This optional subnode is for devices which require a mode differing
+from the panel's "typical" display timing.
+
+Format information on the panel-timing subnode can be found in
+display-timing.txt.
+
+
Example:

panel: panel {
@@ -25,4 +35,16 @@ Example:
enable-gpios = <&gpio 90 0>;

backlight = <&backlight>;
+
+ panel-timing {
+ clock-frequency = <266604720>;
+ hactive = <2400>;
+ hfront-porch = <48>;
+ hback-porch = <84>;
+ hsync-len = <32>;
+ vactive = <1600>;
+ vfront-porch = <3>;
+ vback-porch = <120>;
+ vsync-len = <10>;
+ };
};
--
2.21.0.392.gf8f6787159e-goog