e3839bd6f5
ALSA SoC needs to know connected DAI ID for probing.
It is not a big problem if device/driver was only for sound,
but getting DAI ID will be difficult if device includes both
Video/Sound, like HDMI.
To solve this issue, this patch adds new .get_dai_id callback
on hdmi_codec_ops.
dw-hdmi-i2s will assume that HDMI sound will be connected
to reg = <2>. Then, ALSA SoC side will recognized it as DAI 0
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
/* HDMI Video IN */
};
port@1 {
reg = <1>;
/* HDMI OUT */
};
port@2 {
reg = <2>;
/* HDMI Sound IN */
};
};
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
83 lines
2.2 KiB
Plaintext
83 lines
2.2 KiB
Plaintext
Renesas Gen3 DWC HDMI TX Encoder
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================================
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The HDMI transmitter is a Synopsys DesignWare HDMI 1.4 TX controller IP
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with a companion PHY IP.
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These DT bindings follow the Synopsys DWC HDMI TX bindings defined in
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Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt with the
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following device-specific properties.
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Required properties:
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- compatible : Shall contain one or more of
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- "renesas,r8a7795-hdmi" for R8A7795 (R-Car H3) compatible HDMI TX
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- "renesas,rcar-gen3-hdmi" for the generic R-Car Gen3 compatible HDMI TX
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When compatible with generic versions, nodes must list the SoC-specific
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version corresponding to the platform first, followed by the
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family-specific version.
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- reg: See dw_hdmi.txt.
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- interrupts: HDMI interrupt number
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- clocks: See dw_hdmi.txt.
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- clock-names: Shall contain "iahb" and "isfr" as defined in dw_hdmi.txt.
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- ports: See dw_hdmi.txt. The DWC HDMI shall have one port numbered 0
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corresponding to the video input of the controller and one port numbered 1
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corresponding to its HDMI output, and one port numbered 2 corresponding to
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sound input of the controller. Each port shall have a single endpoint.
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Optional properties:
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- power-domains: Shall reference the power domain that contains the DWC HDMI,
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if any.
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Example:
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hdmi0: hdmi0@fead0000 {
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compatible = "renesas,r8a7795-dw-hdmi";
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reg = <0 0xfead0000 0 0x10000>;
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interrupts = <0 389 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&cpg CPG_CORE R8A7795_CLK_S0D4>, <&cpg CPG_MOD 729>;
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clock-names = "iahb", "isfr";
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power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
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status = "disabled";
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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dw_hdmi0_in: endpoint {
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remote-endpoint = <&du_out_hdmi0>;
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};
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};
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port@1 {
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reg = <1>;
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rcar_dw_hdmi0_out: endpoint {
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remote-endpoint = <&hdmi0_con>;
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};
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};
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port@2 {
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reg = <2>;
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rcar_dw_hdmi0_sound_in: endpoint {
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remote-endpoint = <&hdmi_sound_out>;
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};
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};
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};
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};
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hdmi0-out {
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compatible = "hdmi-connector";
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label = "HDMI0 OUT";
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type = "a";
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port {
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hdmi0_con: endpoint {
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remote-endpoint = <&rcar_dw_hdmi0_out>;
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};
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};
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};
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