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| author | Philipp Zabel <p.zabel@pengutronix.de> | 2014-03-06 17:54:39 +0400 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2015-03-31 13:44:49 +0300 |
| commit | 751e2676ee9272a0fbde6566afde33c1106d7da1 (patch) | |
| tree | db63630644c046470a78af04a0ee81d5a46d5512 /drivers/gpu/drm/imx/Kconfig | |
| parent | 2872c8072aae65fa55cafea50e73d69d423df168 (diff) | |
| download | linux-751e2676ee9272a0fbde6566afde33c1106d7da1.tar.xz | |
drm/imx: imx-ldb: add drm_panel support
This patch allows to optionally attach the lvds-channel to a panel
supported by a drm_panel driver using of-graph bindings, instead of
supplying the modes via display-timings in the device tree.
This depends on of_graph_get_port_by_id and uses the OF graph to
link the optional DRM panel to the LDB lvds-channel. The output
port number is 1 on devices without the 4-port input multiplexer
(i.MX5) and 4 on devices with the mux (i.MX6).
Before:
ldb {
...
lvds-channel@0 {
...
display-timings {
native-timing = <&timing1>;
timing1: etm0700g0dh6 {
hactive = <800>;
vactive = <480>;
clock-frequency = <33260000>;
hsync-len = <128>;
hback-porch = <88>;
hfront-porch = <40>;
vsync-len = <2>;
vback-porch = <33>;
vfront-porch = <10>;
hsync-active = <0>;
vsync-active = <0>;
...
};
};
...
};
};
After:
ldb {
...
lvds-channel@0 {
...
port@4 {
reg = <4>;
lvds_out: endpoint {
remote_endpoint = <&panel_in>;
};
};
};
};
panel {
compatible = "edt,etm0700g0dh6", "simple-panel";
...
port {
panel_in: endpoint {
remote-endpoint = <&lvds_out>;
};
};
};
[Fixed build error due to missing select on DRM_PANEL --rmk]
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'drivers/gpu/drm/imx/Kconfig')
| -rw-r--r-- | drivers/gpu/drm/imx/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/imx/Kconfig b/drivers/gpu/drm/imx/Kconfig index 33cdddf26684..2b81a417cf29 100644 --- a/drivers/gpu/drm/imx/Kconfig +++ b/drivers/gpu/drm/imx/Kconfig @@ -36,6 +36,7 @@ config DRM_IMX_TVE config DRM_IMX_LDB tristate "Support for LVDS displays" depends on DRM_IMX && MFD_SYSCON + select DRM_PANEL help Choose this to enable the internal LVDS Display Bridge (LDB) found on i.MX53 and i.MX6 processors. |