linux-kernel - [PATCH 2/4] dt-bindings: clock: Add support for LPASS Always ON Controller

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Message-Id: <20200917132850.7730-3-srinivas.kandagatla@linaro.org>
Date:   Thu, 17 Sep 2020 14:28:48 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     sboyd@...nel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org
Cc:     bjorn.andersson@...aro.org, mturquette@...libre.com,
        robh+dt@...nel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 2/4] dt-bindings: clock: Add support for LPASS Always ON Controller

Always ON Clock controller is a block inside LPASS which controls
1 Glitch free muxes to LPASS codec Macros.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 .../bindings/clock/qcom,aoncc-sm8250.yaml     | 58 +++++++++++++++++++
 .../clock/qcom,sm8250-lpass-aoncc.h           | 11 ++++
 2 files changed, 69 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.yaml
 create mode 100644 include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h

diff --git a/Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.yaml b/Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.yaml
new file mode 100644
index 000000000000..1846c79c6535
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qcom,aoncc-sm8250.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,aoncc-sm8250.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Clock bindings for LPASS Always ON Clock Controller on SM8250 SoCs
+
+maintainers:
+  - Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
+
+description: |
+  The clock consumer should specify the desired clock by having the clock
+  ID in its "clocks" phandle cell.
+  See include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h for the full list
+  of Audio Clock controller clock IDs.
+
+properties:
+  compatible:
+    const: qcom,sm8250-lpass-aon
+
+  reg:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+  clocks:
+    items:
+      - description: LPASS Core voting clock
+      - description: Glitch Free Mux register clock
+
+  clock-names:
+    items:
+      - const: core
+      - const: bus
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,sm8250-lpass-aoncc.h>
+    #include <dt-bindings/sound/qcom,q6afe.h>
+    clock-controller@...0000 {
+      #clock-cells = <1>;
+      compatible = "qcom,sm8250-lpass-aon";
+      reg = <0 0x03380000 0 0x40000>;
+      clocks = <&q6afecc LPASS_HW_MACRO_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>,
+               <&q6afecc LPASS_CLK_ID_TX_CORE_MCLK LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
+      clock-names = "core", "bus";
+    };
diff --git a/include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h b/include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h
new file mode 100644
index 000000000000..f5a1cfac8612
--- /dev/null
+++ b/include/dt-bindings/clock/qcom,sm8250-lpass-aoncc.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _DT_BINDINGS_CLK_LPASS_AONCC_SM8250_H
+#define _DT_BINDINGS_CLK_LPASS_AONCC_SM8250_H
+
+/* from AOCC */
+#define LPASS_CDC_VA_MCLK				0
+#define LPASS_CDC_TX_NPL				1
+#define LPASS_CDC_TX_MCLK				2
+
+#endif /* _DT_BINDINGS_CLK_LPASS_AONCC_SM8250_H */
-- 
2.21.0