Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 199 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/sound/st,stm32-sai.yaml b/Documentation/devicetree/bindings/sound/st,stm32-sai.yaml
new file mode 100644
index 000000000..56d206f97
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+++ b/Documentation/devicetree/bindings/sound/st,stm32-sai.yaml
@@ -0,0 +1,199 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/st,stm32-sai.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics STM32 Serial Audio Interface (SAI)
+
+maintainers:
+  - Olivier Moysan <olivier.moysan@foss.st.com>
+
+description:
+  The SAI interface (Serial Audio Interface) offers a wide set of audio
+  protocols as I2S standards, LSB or MSB-justified, PCM/DSP, TDM, and AC'97.
+  The SAI contains two independent audio sub-blocks. Each sub-block has
+  its own clock generator and I/O lines controller.
+
+properties:
+  compatible:
+    enum:
+      - st,stm32f4-sai
+      - st,stm32h7-sai
+
+  reg:
+    items:
+      - description: Base address and size of SAI common register set.
+      - description: Base address and size of SAI identification register set.
+    minItems: 1
+
+  ranges:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  clocks:
+    maxItems: 3
+
+  clock-names:
+    maxItems: 3
+
+required:
+  - compatible
+  - reg
+  - ranges
+  - "#address-cells"
+  - "#size-cells"
+  - clocks
+  - clock-names
+
+patternProperties:
+  "^audio-controller@[0-9a-f]+$":
+    type: object
+    additionalProperties: false
+    description:
+      Two subnodes corresponding to SAI sub-block instances A et B
+      can be defined. Subnode can be omitted for unsused sub-block.
+
+    properties:
+      compatible:
+        description: Compatible for SAI sub-block A or B.
+        pattern: "st,stm32-sai-sub-[ab]"
+
+      "#sound-dai-cells":
+        const: 0
+
+      reg:
+        maxItems: 1
+
+      clocks:
+        items:
+          - description: sai_ck clock feeding the internal clock generator.
+          - description: MCLK clock from a SAI set as master clock provider.
+        minItems: 1
+
+      clock-names:
+        items:
+          - const: sai_ck
+          - const: MCLK
+        minItems: 1
+
+      dmas:
+        maxItems: 1
+
+      dma-names:
+        description: |
+          rx: SAI sub-block is configured as a capture DAI.
+          tx: SAI sub-block is configured as a playback DAI.
+        enum: [ rx, tx ]
+
+      st,sync:
+        description:
+          Configure the SAI sub-block as slave of another SAI sub-block.
+          By default SAI sub-block is in asynchronous mode.
+          Must contain the phandle and index of the SAI sub-block providing
+          the synchronization.
+        $ref: /schemas/types.yaml#/definitions/phandle-array
+        items:
+          - items:
+              - description: phandle of the SAI sub-block
+              - description: index of the SAI sub-block
+
+      st,iec60958:
+        description:
+          If set, support S/PDIF IEC6958 protocol for playback.
+          IEC60958 protocol is not available for capture.
+          By default, custom protocol is assumed, meaning that protocol is
+          configured according to protocol defined in related DAI link node,
+          such as i2s, left justified, right justified, dsp and pdm protocols.
+        $ref: /schemas/types.yaml#/definitions/flag
+
+      "#clock-cells":
+        description: Configure the SAI device as master clock provider.
+        const: 0
+
+      port:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
+
+    required:
+      - compatible
+      - "#sound-dai-cells"
+      - reg
+      - clocks
+      - clock-names
+      - dmas
+      - dma-names
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: st,stm32f4-sai
+    then:
+      properties:
+        clocks:
+          items:
+            - description: x8k, SAI parent clock for sampling rates multiple of 8kHz.
+            - description: x11k, SAI parent clock for sampling rates multiple of 11.025kHz.
+
+        clock-names:
+          items:
+            - const: x8k
+            - const: x11k
+    else:
+      properties:
+        clocks:
+          items:
+            - description: pclk feeds the peripheral bus interface.
+            - description: x8k, SAI parent clock for sampling rates multiple of 8kHz.
+            - description: x11k, SAI parent clock for sampling rates multiple of 11.025kHz.
+
+        clock-names:
+          items:
+            - const: pclk
+            - const: x8k
+            - const: x11k
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/stm32mp1-clks.h>
+    #include <dt-bindings/reset/stm32mp1-resets.h>
+    sai2: sai@4400b000 {
+      compatible = "st,stm32h7-sai";
+      #address-cells = <1>;
+      #size-cells = <1>;
+      ranges = <0 0x4400b000 0x400>;
+      reg = <0x4400b000 0x4>, <0x4400b3f0 0x10>;
+      clocks = <&rcc SAI2>, <&rcc PLL3_Q>, <&rcc PLL3_R>;
+      clock-names = "pclk", "x8k", "x11k";
+      pinctrl-names = "default", "sleep";
+      pinctrl-0 = <&sai2a_pins_a>, <&sai2b_pins_b>;
+      pinctrl-1 = <&sai2a_sleep_pins_a>, <&sai2b_sleep_pins_b>;
+
+      sai2a: audio-controller@4400b004 {
+        #sound-dai-cells = <0>;
+        compatible = "st,stm32-sai-sub-a";
+        reg = <0x4 0x1c>;
+        dmas = <&dmamux1 89 0x400 0x01>;
+        dma-names = "tx";
+        clocks = <&rcc SAI2_K>;
+        clock-names = "sai_ck";
+      };
+    };
+
+...