[PATCH v2 6/8] dt-bindings: mediatek: mt8195: add audio afe document

[Trevor Wu <trevor.wu@mediatek.com>]

This patch adds mt8195 audio afe document.

Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
---
This patch depends on the following series that have not been accepted.

[1] Mediatek MT8195 clock support
https://patchwork.kernel.org/project/linux-mediatek/list/?series=501923
(dt-bindings/clock/mt8195-clk.h is included)

[2] Mediatek MT8195 power domain support
https://patchwork.kernel.org/project/linux-mediatek/list/?series=500709
(dt-bindings/power/mt8195-power.h is included)
---
 .../bindings/sound/mt8195-afe-pcm.yaml        | 136 ++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/mt8195-afe-pcm.yaml

diff --git a/Documentation/devicetree/bindings/sound/mt8195-afe-pcm.yaml b/Documentation/devicetree/bindings/sound/mt8195-afe-pcm.yaml
new file mode 100644
index 000000000000..a4fb5c7dd022
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/mt8195-afe-pcm.yaml
@@ -0,0 +1,136 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/mt8195-afe-pcm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek AFE PCM controller for mt8195
+
+maintainers:
+  - Trevor Wu <trevor.wu@mediatek.com>
+
+properties:
+  compatible:
+    const: mediatek,mt8195-audio
+
+  interrupts:
+    maxItems: 1
+
+  mediatek,topckgen:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+    description: The phandle of the mediatek topckgen controller
+
+  power-domains:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: audio 26M clock
+      - description: AFE clock
+      - description: audio infra sys clock
+      - description: audio infra 26M clock
+
+  clock-names:
+    items:
+      - const: clk26m
+      - const: aud_afe
+      - const: infra_ao_audio
+      - const: infra_ao_audio_26m_b
+
+  etdm-in1-chn-disabled:
+    $ref: /schemas/types.yaml#/definitions/uint8-array
+    maxItems: 24
+    description: Specify which input channel should be disabled.
+
+  etdm-in2-chn-disabled:
+    $ref: /schemas/types.yaml#/definitions/uint8-array
+    maxItems: 16
+    description: Specify which input channel should be disabled.
+
+patternProperties:
+  "^etdm-in[1-2]-mclk-source$":
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Specify etdm in mclk source clock.
+    enum:
+      - 0 # xtal_26m_ck
+      - 1 # apll1_ck
+      - 2 # apll2_ck
+      - 3 # apll3_ck
+      - 4 # apll4_ck
+      - 5 # apll5_ck
+      - 6 # hdmirx_apll_ck
+
+  "^etdm-out[1-3]-mclk-source$":
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Specify etdm out mclk source clock.
+
+  "^etdm-in[1-2]-mclk-alwasys-on-rate$":
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Specify etdm in mclk output rate for always on case.
+
+  "^etdm-out[1-3]-mclk-alwasys-on-rate$":
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Specify etdm out mclk output rate for always on case.
+
+  "^etdm-in[1-2]-data-mode$":
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Specify etdm in data mode.
+    enum:
+      - 0 # one pin (TDM)
+      - 1 # multi pin (I2S)
+
+  "^etdm-out[1-3]-data-mode$":
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Specify etdm out data mode.
+
+  "^etdm-in[1-2]-cowork-source$":
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      etdm modules can share the same external clock pin. Specify
+      which etdm clock source is required by this etdm in moudule.
+    enum:
+      - 0 # etdm1_in
+      - 1 # etdm2_in
+      - 2 # etdm1_out
+      - 3 # etdm2_out
+      - 4 # etdm3_out
+
+  "^etdm-out[1-3]-cowork-source$":
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      etdm modules can share the same external clock pin. Specify
+      which etdm clock source is required by this etdm out moudule.
+
+required:
+  - compatible
+  - interrupts
+  - mediatek,topckgen
+  - power-domains
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt8195-clk.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/power/mt8195-power.h>
+
+    afe: mt8195-afe-pcm {
+        compatible = "mediatek,mt8195-audio";
+        interrupts = <GIC_SPI 822 IRQ_TYPE_LEVEL_HIGH 0>;
+        mediatek,topckgen = <&topckgen>;
+        power-domains = <&spm MT8195_POWER_DOMAIN_AUDIO>;
+        clocks = <&clk26m>,
+                 <&audsys CLK_AUD_AFE>,
+                 <&infracfg_ao CLK_INFRA_AO_AUDIO>,
+                 <&infracfg_ao CLK_INFRA_AO_AUDIO_26M_B>;
+        clock-names = "clk26m",
+                      "aud_afe",
+                      "infra_ao_audio",
+                      "infra_ao_audio_26m_b";
+    };
+
+...
-- 
2.18.0