linux-kernel - [PATCH V3 1/3] dt-bindings: clock: qcom: Add SM8450 video clock controller

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Message-ID: <20230503105937.24911-2-quic_tdas@quicinc.com>
Date:   Wed, 3 May 2023 16:29:35 +0530
From:   Taniya Das <quic_tdas@...cinc.com>
To:     Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Michael Turquette <mturquette@...libre.com>
CC:     Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Taniya Das <quic_tdas@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <quic_skakitap@...cinc.com>, <quic_jkona@...cinc.com>
Subject: [PATCH V3 1/3] dt-bindings: clock: qcom: Add SM8450 video clock controller

Add device tree bindings for the video clock controller on Qualcomm
SM8450 platform.

Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
Reviewed-by: Rob Herring <robh@...nel.org>
---
Changes since V2:
 - As per Stephen's comments drop clock-names to match how newer
   qcom clk bindings are being done.
 - Change the header file name as qcom,sm8450-videocc.h to match
   latest upstream header files.

Changes since V1:
 - Change the properties order to keep reg after the compatible
   property.

 .../bindings/clock/qcom,sm8450-videocc.yaml   | 77 +++++++++++++++++++
 .../dt-bindings/clock/qcom,sm8450-videocc.h   | 38 +++++++++
 2 files changed, 115 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml
 create mode 100644 include/dt-bindings/clock/qcom,sm8450-videocc.h

diff --git a/Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml b/Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml
new file mode 100644
index 000000000000..58e59065bb2a
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qcom,sm8450-videocc.yaml
@@ -0,0 +1,77 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,sm8450-videocc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Video Clock & Reset Controller on SM8450
+
+maintainers:
+  - Taniya Das <quic_tdas@...cinc.com>
+
+description: |
+  Qualcomm video clock control module provides the clocks, resets and power
+  domains on SM8450.
+
+  See also:: include/dt-bindings/clock/qcom,videocc-sm8450.h
+
+properties:
+  compatible:
+    const: qcom,sm8450-videocc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Video AHB clock from GCC
+      - description: Board XO source
+
+  power-domains:
+    maxItems: 1
+    description:
+      MMCX power domain.
+
+  required-opps:
+    maxItems: 1
+    description:
+      A phandle to an OPP node describing required MMCX performance point.
+
+  '#clock-cells':
+    const: 1
+
+  '#reset-cells':
+    const: 1
+
+  '#power-domain-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - power-domains
+  - required-opps
+  - '#clock-cells'
+  - '#reset-cells'
+  - '#power-domain-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-sm8450.h>
+    #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/power/qcom-rpmpd.h>
+    videocc: clock-controller@...0000 {
+      compatible = "qcom,sm8450-videocc";
+      reg = <0x0aaf0000 0x10000>;
+      clocks = <&gcc GCC_VIDEO_AHB_CLK>,
+               <&rpmhcc RPMH_CXO_CLK>;
+      power-domains = <&rpmhpd SM8450_MMCX>;
+      required-opps = <&rpmhpd_opp_low_svs>;
+      #clock-cells = <1>;
+      #reset-cells = <1>;
+      #power-domain-cells = <1>;
+    };
+...
diff --git a/include/dt-bindings/clock/qcom,sm8450-videocc.h b/include/dt-bindings/clock/qcom,sm8450-videocc.h
new file mode 100644
index 000000000000..9d795adfe4eb
--- /dev/null
+++ b/include/dt-bindings/clock/qcom,sm8450-videocc.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef _DT_BINDINGS_CLK_QCOM_VIDEO_CC_SM8450_H
+#define _DT_BINDINGS_CLK_QCOM_VIDEO_CC_SM8450_H
+
+/* VIDEO_CC clocks */
+#define VIDEO_CC_MVS0_CLK					0
+#define VIDEO_CC_MVS0_CLK_SRC					1
+#define VIDEO_CC_MVS0_DIV_CLK_SRC				2
+#define VIDEO_CC_MVS0C_CLK					3
+#define VIDEO_CC_MVS0C_DIV2_DIV_CLK_SRC				4
+#define VIDEO_CC_MVS1_CLK					5
+#define VIDEO_CC_MVS1_CLK_SRC					6
+#define VIDEO_CC_MVS1_DIV_CLK_SRC				7
+#define VIDEO_CC_MVS1C_CLK					8
+#define VIDEO_CC_MVS1C_DIV2_DIV_CLK_SRC				9
+#define VIDEO_CC_PLL0						10
+#define VIDEO_CC_PLL1						11
+
+/* VIDEO_CC power domains */
+#define VIDEO_CC_MVS0C_GDSC					0
+#define VIDEO_CC_MVS0_GDSC					1
+#define VIDEO_CC_MVS1C_GDSC					2
+#define VIDEO_CC_MVS1_GDSC					3
+
+/* VIDEO_CC resets */
+#define CVP_VIDEO_CC_INTERFACE_BCR				0
+#define CVP_VIDEO_CC_MVS0_BCR					1
+#define CVP_VIDEO_CC_MVS0C_BCR					2
+#define CVP_VIDEO_CC_MVS1_BCR					3
+#define CVP_VIDEO_CC_MVS1C_BCR					4
+#define VIDEO_CC_MVS0C_CLK_ARES					5
+#define VIDEO_CC_MVS1C_CLK_ARES					6
+
+#endif
-- 
2.25.1