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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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751e2676ee
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>
57 lines
1.4 KiB
Plaintext
57 lines
1.4 KiB
Plaintext
config DRM_IMX
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tristate "DRM Support for Freescale i.MX"
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select DRM_KMS_HELPER
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select DRM_KMS_FB_HELPER
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select VIDEOMODE_HELPERS
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select DRM_GEM_CMA_HELPER
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select DRM_KMS_CMA_HELPER
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depends on DRM && (ARCH_MXC || ARCH_MULTIPLATFORM) && HAVE_DMA_ATTRS
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depends on IMX_IPUV3_CORE
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help
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enable i.MX graphics support
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config DRM_IMX_FB_HELPER
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tristate "provide legacy framebuffer /dev/fb0"
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select DRM_KMS_CMA_HELPER
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depends on DRM_IMX
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help
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The DRM framework can provide a legacy /dev/fb0 framebuffer
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for your device. This is necessary to get a framebuffer console
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and also for applications using the legacy framebuffer API
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config DRM_IMX_PARALLEL_DISPLAY
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tristate "Support for parallel displays"
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select DRM_PANEL
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depends on DRM_IMX
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select VIDEOMODE_HELPERS
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config DRM_IMX_TVE
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tristate "Support for TV and VGA displays"
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depends on DRM_IMX
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select REGMAP_MMIO
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help
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Choose this to enable the internal Television Encoder (TVe)
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found on i.MX53 processors.
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config DRM_IMX_LDB
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tristate "Support for LVDS displays"
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depends on DRM_IMX && MFD_SYSCON
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select DRM_PANEL
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help
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Choose this to enable the internal LVDS Display Bridge (LDB)
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found on i.MX53 and i.MX6 processors.
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config DRM_IMX_IPUV3
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tristate
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depends on DRM_IMX
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depends on IMX_IPUV3_CORE
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default y if DRM_IMX=y
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default m if DRM_IMX=m
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config DRM_IMX_HDMI
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tristate "Freescale i.MX DRM HDMI"
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select DRM_DW_HDMI
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depends on DRM_IMX
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help
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Choose this if you want to use HDMI on i.MX6.
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