From: Nikita Shubin <nikita.shubin@maquefel.me>

Convert the Cirrus Logic CS4271 audio CODEC bindings to DT schema.

Add missing spi-cpha, spi-cpol, '#sound-dai-cells' and port, as they
are already being used in the DTS and the driver for this device.

Based on Animesh Agarwal cs42xx8 conversion patch.

Keep the original 'reset-gpio' used in bindings,
instead of 'reset-gpios' used in cs42xx8.

Cc: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Link: https://lore.kernel.org/all/20240715-ep93xx-v11-0-4e924efda795@maquefel.me
Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>
---
This is complementary patch to ep93xx DT conversion series.

Based on "ASoC: dt-bindings: cirrus,cs4270: Convert to dtschema" patch.

Krzysztof, thank you very much for quick review!
---
Changes in v2:
Krzysztof Kozlowski:
- fix SoB above link
- replace 'driver' with 'device'
- mention properties not present in original bindings
- mention using 'gpio-reset' instead of 'gpios-reset'
- dropped unused label
- use defines for gpio bindings
- newline at end of file
- Link to v1: https://lore.kernel.org/r/20240826-cs4271-yaml-v1-1-dad3f0b041ef@maquefel.me
---
 .../devicetree/bindings/sound/cirrus,cs4271.yaml   | 101 +++++++++++++++++++++
 Documentation/devicetree/bindings/sound/cs4271.txt |  57 ------------
 2 files changed, 101 insertions(+), 57 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/cirrus,cs4271.yaml b/Documentation/devicetree/bindings/sound/cirrus,cs4271.yaml
new file mode 100644
index 000000000000..cc5b48ceafa4
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cirrus,cs4271.yaml
@@ -0,0 +1,101 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/cirrus,cs4271.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus Logic CS4271 audio CODEC
+
+maintainers:
+  - Alexander Sverdlin <alexander.sverdlin@gmail.com>
+  - Nikita Shubin <nikita.shubin@maquefel.me>
+
+description:
+  The CS4271 is a stereo audio codec. This device supports both the I2C
+  and the SPI bus.
+
+allOf:
+  - $ref: dai-common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    const: cirrus,cs4271
+
+  reg:
+    maxItems: 1
+
+  spi-cpha: true
+
+  spi-cpol: true
+
+  '#sound-dai-cells':
+    const: 0
+
+  reset-gpio:
+    description:
+      This pin will be deasserted before communication to the codec starts.
+    maxItems: 1
+
+  va-supply:
+    description: Analog power supply.
+
+  vd-supply:
+    description: Digital power supply.
+
+  vl-supply:
+    description: Serial Control Port power supply.
+
+  port:
+    $ref: audio-graph-port.yaml#
+    unevaluatedProperties: false
+
+  cirrus,amuteb-eq-bmutec:
+    description:
+      When given, the Codec's AMUTEB=BMUTEC flag is enabled.
+    type: boolean
+
+  cirrus,enable-soft-reset:
+    description: |
+      The CS4271 requires its LRCLK and MCLK to be stable before its RESET
+      line is de-asserted. That also means that clocks cannot be changed
+      without putting the chip back into hardware reset, which also requires
+      a complete re-initialization of all registers.
+
+      One (undocumented) workaround is to assert and de-assert the PDN bit
+      in the MODE2 register. This workaround can be enabled with this DT
+      property.
+
+      Note that this is not needed in case the clocks are stable
+      throughout the entire runtime of the codec.
+    type: boolean
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        cs4271@0 {
+            compatible = "cirrus,cs4271";
+            reg = <0>;
+            #sound-dai-cells = <0>;
+            spi-max-frequency = <6000000>;
+            spi-cpol;
+            spi-cpha;
+            reset-gpio = <&gpio0 1 GPIO_ACTIVE_LOW>;
+            port {
+                endpoint {
+                    remote-endpoint = <&i2s_ep>;
+                };
+            };
+        };
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/sound/cs4271.txt b/Documentation/devicetree/bindings/sound/cs4271.txt
deleted file mode 100644
index 6e699ceabacd..000000000000
--- a/Documentation/devicetree/bindings/sound/cs4271.txt
+++ /dev/null
@@ -1,57 +0,0 @@
-Cirrus Logic CS4271 DT bindings
-
-This driver supports both the I2C and the SPI bus.
-
-Required properties:
-
- - compatible: "cirrus,cs4271"
-
-For required properties on SPI, please consult
-Documentation/devicetree/bindings/spi/spi-bus.txt
-
-Required properties on I2C:
-
- - reg: the i2c address
-
-
-Optional properties:
-
- - reset-gpio: 	a GPIO spec to define which pin is connected to the chip's
-		!RESET pin
- - cirrus,amuteb-eq-bmutec:	When given, the Codec's AMUTEB=BMUTEC flag
-				is enabled.
- - cirrus,enable-soft-reset:
-	The CS4271 requires its LRCLK and MCLK to be stable before its RESET
-	line is de-asserted. That also means that clocks cannot be changed
-	without putting the chip back into hardware reset, which also requires
-	a complete re-initialization of all registers.
-
-	One (undocumented) workaround is to assert and de-assert the PDN bit
-	in the MODE2 register. This workaround can be enabled with this DT
-	property.
-
-	Note that this is not needed in case the clocks are stable
-	throughout the entire runtime of the codec.
-
- - vd-supply:	Digital power
- - vl-supply:	Logic power
- - va-supply:	Analog Power
-
-Examples:
-
-	codec_i2c: cs4271@10 {
-		compatible = "cirrus,cs4271";
-		reg = <0x10>;
-		reset-gpio = <&gpio 23 0>;
-		vd-supply = <&vdd_3v3_reg>;
-		vl-supply = <&vdd_3v3_reg>;
-		va-supply = <&vdd_3v3_reg>;
-	};
-
-	codec_spi: cs4271@0 {
-		compatible = "cirrus,cs4271";
-		reg = <0x0>;
-		reset-gpio = <&gpio 23 0>;
-		spi-max-frequency = <6000000>;
-	};
-

---
base-commit: 5be63fc19fcaa4c236b307420483578a56986a37
change-id: 20240826-cs4271-yaml-e3890230dbbf

Best regards,
-- 
Nikita Shubin <nikita.shubin@maquefel.me>

On Tue, Aug 27, 2024 at 12:49:18PM +0300, Nikita Shubin via B4 Relay wrote:
> From: Nikita Shubin <nikita.shubin@maquefel.me>
> 
> Convert the Cirrus Logic CS4271 audio CODEC bindings to DT schema.
> 
> Add missing spi-cpha, spi-cpol, '#sound-dai-cells' and port, as they
> are already being used in the DTS and the driver for this device.
> 
> Based on Animesh Agarwal cs42xx8 conversion patch.
> 
> Keep the original 'reset-gpio' used in bindings,
> instead of 'reset-gpios' used in cs42xx8.
> 
> Cc: Alexander Sverdlin <alexander.sverdlin@gmail.com>
> Link: https://lore.kernel.org/all/20240715-ep93xx-v11-0-4e924efda795@maquefel.me
> Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>
> ---
> This is complementary patch to ep93xx DT conversion series.
> 
> Based on "ASoC: dt-bindings: cirrus,cs4270: Convert to dtschema" patch.
> 
> Krzysztof, thank you very much for quick review!
> ---
> Changes in v2:
> Krzysztof Kozlowski:
> - fix SoB above link
> - replace 'driver' with 'device'
> - mention properties not present in original bindings
> - mention using 'gpio-reset' instead of 'gpios-reset'
> - dropped unused label
> - use defines for gpio bindings
> - newline at end of file
> - Link to v1: https://lore.kernel.org/r/20240826-cs4271-yaml-v1-1-dad3f0b041ef@maquefel.me
> ---
>  .../devicetree/bindings/sound/cirrus,cs4271.yaml   | 101 +++++++++++++++++++++
>  Documentation/devicetree/bindings/sound/cs4271.txt |  57 ------------
>  2 files changed, 101 insertions(+), 57 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/sound/cirrus,cs4271.yaml b/Documentation/devicetree/bindings/sound/cirrus,cs4271.yaml
> new file mode 100644
> index 000000000000..cc5b48ceafa4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/cirrus,cs4271.yaml
> @@ -0,0 +1,101 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/cirrus,cs4271.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Cirrus Logic CS4271 audio CODEC
> +
> +maintainers:
> +  - Alexander Sverdlin <alexander.sverdlin@gmail.com>
> +  - Nikita Shubin <nikita.shubin@maquefel.me>
> +
> +description:
> +  The CS4271 is a stereo audio codec. This device supports both the I2C
> +  and the SPI bus.
> +
> +allOf:
> +  - $ref: dai-common.yaml#
> +  - $ref: /schemas/spi/spi-peripheral-props.yaml#
> +
> +properties:
> +  compatible:
> +    const: cirrus,cs4271
> +
> +  reg:
> +    maxItems: 1
> +
> +  spi-cpha: true
> +
> +  spi-cpol: true
> +
> +  '#sound-dai-cells':
> +    const: 0
> +
> +  reset-gpio:

I wasn't clear... reset-gpios and mention that you switched to
non-deprecated gpios suffix.

> +    description:
> +      This pin will be deasserted before communication to the codec starts.
> +    maxItems: 1
> +
> +  va-supply:
> +    description: Analog power supply.
> +
> +  vd-supply:
> +    description: Digital power supply.
> +
> +  vl-supply:
> +    description: Serial Control Port power supply.
> +
> +  port:
> +    $ref: audio-graph-port.yaml#
> +    unevaluatedProperties: false
> +
> +  cirrus,amuteb-eq-bmutec:
> +    description:
> +      When given, the Codec's AMUTEB=BMUTEC flag is enabled.
> +    type: boolean
> +
> +  cirrus,enable-soft-reset:
> +    description: |
> +      The CS4271 requires its LRCLK and MCLK to be stable before its RESET
> +      line is de-asserted. That also means that clocks cannot be changed
> +      without putting the chip back into hardware reset, which also requires
> +      a complete re-initialization of all registers.
> +
> +      One (undocumented) workaround is to assert and de-assert the PDN bit
> +      in the MODE2 register. This workaround can be enabled with this DT
> +      property.
> +
> +      Note that this is not needed in case the clocks are stable
> +      throughout the entire runtime of the codec.
> +    type: boolean
> +
> +required:
> +  - compatible
> +  - reg
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    spi {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        cs4271@0 {

Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

audio-codec or codec

Best regards,
Krzysztof