@@ -12,6 +12,24 @@ Optional properties:
- enable-gpios: GPIO pin to enable or disable the panel
- backlight: phandle of the backlight device attached to the panel
+display-timings subnode
+-----------------------
+
+This optional subnode is for devices which require a mode differing from the
+panel's "typical" display timing as programmed in the simple-panel driver.
+Overriding the driver mode must only be done in the following scenario:
+ - The restrictions motivating the override cannot be applied to the platform's
+ display driver (ie: it must be specific to the device not the platform)
+ - The panel must not have a fixed mode attributed to it in the driver
+ - The panel must provide at list one display_timing range by which the override
+ mode can be validated against
+ - The override mode will use the 'typ' values from the display-timings subnode
+ - You must provide all required properties for the display-timings subnode
+
+Format information on the display-timings subnode can be found in
+display-timing.txt.
+
+
Example:
panel: panel {
@@ -22,4 +40,18 @@ Example:
enable-gpios = <&gpio 90 0>;
backlight = <&backlight>;
+
+ display-timings {
+ timing0: override {
+ 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>;
+ };
+ };
};
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) 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> --- .../bindings/display/panel/simple-panel.txt | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+)