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dt-bindings: display: rcar-du: Add a VSP channel index to the vsps DT property 

On some R-Car SoCs a single VSP can serve multiple DU channels through
multiple LIF instances in the VSP. The current DT bindings don't support
specifying that kind of SoC integration scheme. Extend them with a VSP
channel index.

Backward compatibility can be ensured in drivers by checking the length
of the vsps property and setting the channel to 0 when the property
doesn't contain channel indices.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Laurent Pinchart 2017-07-12 11:43:36 +03:00 committed by Simon Horman
parent d5f2ac6ae9
commit fd57d77f9c
1 changed files with 30 additions and 21 deletions
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51
Documentation/devicetree/bindings/display/renesas,du.txt
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@ -36,8 +36,10 @@ Required Properties:
When supplied they must be named "dclkin.x" with "x" being the input
clock numerical index.
- vsps: A list of phandles to the VSP nodes that handle the memory
interfaces for the DU channels.
- vsps: A list of phandle and channel index tuples to the VSPs that handle
the memory interfaces for the DU channels. The phandle identifies the VSP
instance that serves the DU channel, and the channel index identifies the
LIF instance in that VSP.
Required nodes:
@ -59,24 +61,24 @@ corresponding to each DU output.
R8A7796 (M3-W) DPAD HDMI LVDS -
Example: R8A7790 (R-Car H2) DU
Example: R8A7795 (R-Car H3) ES2.0 DU
du: du@feb00000 {
compatible = "renesas,du-r8a7790";
reg = <0 0xfeb00000 0 0x70000>,
<0 0xfeb90000 0 0x1c>,
<0 0xfeb94000 0 0x1c>;
reg-names = "du", "lvds.0", "lvds.1";
interrupt-parent = <&gic>;
interrupts = <0 256 IRQ_TYPE_LEVEL_HIGH>,
<0 268 IRQ_TYPE_LEVEL_HIGH>,
<0 269 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&mstp7_clks R8A7790_CLK_DU0>,
<&mstp7_clks R8A7790_CLK_DU1>,
<&mstp7_clks R8A7790_CLK_DU2>,
<&mstp7_clks R8A7790_CLK_LVDS0>,
<&mstp7_clks R8A7790_CLK_LVDS1>;
clock-names = "du.0", "du.1", "du.2", "lvds.0", "lvds.1";
du: display@feb00000 {
compatible = "renesas,du-r8a7795";
reg = <0 0xfeb00000 0 0x80000>,
<0 0xfeb90000 0 0x14>;
reg-names = "du", "lvds.0";
interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 269 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 724>,
<&cpg CPG_MOD 723>,
<&cpg CPG_MOD 722>,
<&cpg CPG_MOD 721>,
<&cpg CPG_MOD 727>;
clock-names = "du.0", "du.1", "du.2", "du.3", "lvds.0";
vsps = <&vspd0 0>, <&vspd1 0>, <&vspd2 0>, <&vspd0 1>;
ports {
#address-cells = <1>;
@ -89,12 +91,19 @@ Example: R8A7790 (R-Car H2) DU
};
port@1 {
reg = <1>;
du_out_lvds0: endpoint {
du_out_hdmi0: endpoint {
remote-endpoint = <&dw_hdmi0_in>;
};
};
port@2 {
reg = <2>;
du_out_lvds1: endpoint {
du_out_hdmi1: endpoint {
remote-endpoint = <&dw_hdmi1_in>;
};
};
port@3 {
reg = <3>;
du_out_lvds0: endpoint {
};
};
};