ASoC: mediatek: add documents for mt6797

Signed-off-by: KaiChieh Chuang <kaichieh.chuang@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/mt6797-afe-pcm.txt b/Documentation/devicetree/bindings/sound/mt6797-afe-pcm.txt
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+Mediatek AFE PCM controller for mt6797
+
+Required properties:
+- compatible = "mediatek,mt6797-audio";
+- reg: register location and size
+- interrupts: should contain AFE interrupt
+- power-domains: should define the power domain
+- clocks: Must contain an entry for each entry in clock-names
+- clock-names: should have these clock names:
+               "infra_sys_audio_clk",
+               "infra_sys_audio_26m",
+               "mtkaif_26m_clk",
+               "top_mux_audio",
+               "top_mux_aud_intbus",
+               "top_sys_pll3_d4",
+               "top_sys_pll1_d4",
+               "top_clk26m_clk";
+
+Example:
+
+       afe: mt6797-afe-pcm@11220000  {
+               compatible = "mediatek,mt6797-audio";
+               reg = <0 0x11220000 0 0x1000>;
+               interrupts = <GIC_SPI 151 IRQ_TYPE_LEVEL_LOW>;
+               power-domains = <&scpsys MT6797_POWER_DOMAIN_AUDIO>;
+               clocks = <&infrasys CLK_INFRA_AUDIO>,
+                        <&infrasys CLK_INFRA_AUDIO_26M>,
+                        <&infrasys CLK_INFRA_AUDIO_26M_PAD_TOP>,
+                        <&topckgen CLK_TOP_MUX_AUDIO>,
+                        <&topckgen CLK_TOP_MUX_AUD_INTBUS>,
+                        <&topckgen CLK_TOP_SYSPLL3_D4>,
+                        <&topckgen CLK_TOP_SYSPLL1_D4>,
+                        <&clk26m>;
+               clock-names = "infra_sys_audio_clk",
+                             "infra_sys_audio_26m",
+                             "mtkaif_26m_clk",
+                             "top_mux_audio",
+                             "top_mux_aud_intbus",
+                             "top_sys_pll3_d4",
+                             "top_sys_pll1_d4",
+                             "top_clk26m_clk";
+       };

diff --git a/Documentation/devicetree/bindings/sound/mt6797-mt6351.txt b/Documentation/devicetree/bindings/sound/mt6797-mt6351.txt
new file mode 100644 (file)
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+++ b/Documentation/devicetree/bindings/sound/mt6797-mt6351.txt
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+MT6797 with MT6351 CODEC
+
+Required properties:
+- compatible: "mediatek,mt6797-mt6351-sound"
+- mediatek,platform: the phandle of MT6797 ASoC platform
+- mediatek,audio-codec: the phandles of MT6351 codec
+
+Example:
+
+       sound {
+               compatible = "mediatek,mt6797-mt6351-sound";
+               mediatek,audio-codec = <&mt6351_snd>;
+               mediatek,platform = <&afe>;
+       };