[PATCH v3 12/13] dt-bindings: clock: Add Marvell MMP Audio Clock Controller binding

[Lubomir Rintel]

This describes the bindings for a controller that generates master and bit
clocks for the I2S interface.

Signed-off-by: Lubomir Rintel <lkundrak@xxxxx>

---
Changes since v1:
- Fix commit message wording
- Define MMP2_CLK_AUDIO_NR_CLKS
- Make clock ids start at 0, not 1
- Fix dt-bindings/clock/marvell,mmp2-audio.h file name
- Rename node from "clocks" to "clock-controller"

 .../clock/marvell,mmp2-audio-clock.yaml       | 74 +++++++++++++++++++
 .../dt-bindings/clock/marvell,mmp2-audio.h    | 10 +++
 2 files changed, 84 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/marvell,mmp2-audio-clock.yaml
 create mode 100644 include/dt-bindings/clock/marvell,mmp2-audio.h

diff --git a/Documentation/devicetree/bindings/clock/marvell,mmp2-audio-clock.yaml b/Documentation/devicetree/bindings/clock/marvell,mmp2-audio-clock.yaml
new file mode 100644
index 000000000000..ab6e82d1d3a9
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/marvell,mmp2-audio-clock.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/marvell,mmp2-audio-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell MMP2 Audio Clock Controller
+
+maintainers:
+  - Lubomir Rintel <lkundrak@xxxxx>
+
+description: |
+  The audio clock controller generates and supplies the clocks to the audio
+  codec.
+
+  Each clock is assigned an identifier and client nodes use this identifier
+  to specify the clock which they consume.
+
+  All these identifiers could be found in
+  <dt-bindings/clock/marvell,mmp2-audio.h>.
+
+properties:
+  compatible:
+    enum:
+      - marvell,mmp2-audio-clock
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Audio subsystem clock
+      - description: The crystal oscillator clock
+      - description: First I2S clock
+      - description: Second I2S clock
+
+  clock-names:
+    items:
+      - const: audio
+      - const: vctcxo
+      - const: i2s0
+      - const: i2s1
+
+  '#clock-cells':
+    const: 1
+
+  power-domains:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/marvell,mmp2-audio.h>
+    #include <dt-bindings/power/marvell,mmp2.h>
+
+    clock-controller@d42a0c30 {
+      compatible = "marvell,mmp2-audio-clock";
+      reg = <0xd42a0c30 0x10>;
+      clock-names = "audio", "vctcxo", "i2s0", "i2s1";
+      clocks = <&soc_clocks MMP2_CLK_AUDIO>,
+               <&soc_clocks MMP2_CLK_VCTCXO>,
+               <&soc_clocks MMP2_CLK_I2S0>,
+               <&soc_clocks MMP2_CLK_I2S1>;
+      power-domains = <&soc_clocks MMP2_POWER_DOMAIN_AUDIO>;
+      #clock-cells = <1>;
+    };
diff --git a/include/dt-bindings/clock/marvell,mmp2-audio.h b/include/dt-bindings/clock/marvell,mmp2-audio.h
new file mode 100644
index 000000000000..20664776f497
--- /dev/null
+++ b/include/dt-bindings/clock/marvell,mmp2-audio.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause) */
+#ifndef __DT_BINDINGS_CLOCK_MARVELL_MMP2_AUDIO_H
+#define __DT_BINDINGS_CLOCK_MARVELL_MMP2_AUDIO_H
+
+#define MMP2_CLK_AUDIO_SYSCLK		0
+#define MMP2_CLK_AUDIO_SSPA0		1
+#define MMP2_CLK_AUDIO_SSPA1		2
+
+#define MMP2_CLK_AUDIO_NR_CLKS		3
+#endif
-- 
2.26.2