linux-kernel - [PATCH v10 1/4] dt-bindings: clock: Document external clocks for MSM8998 gcc

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Date:   Sun, 17 Nov 2019 21:26:31 +0000
From:   Jeffrey Hugo <jhugo@...eaurora.org>
To:     mturquette@...libre.com, sboyd@...nel.org
Cc:     agross@...nel.org, bjorn.andersson@...aro.org,
        marc.w.gonzalez@...e.fr, robh+dt@...nel.org, mark.rutland@....com,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Jeffrey Hugo <jhugo@...eaurora.org>
Subject: [PATCH v10 1/4] dt-bindings: clock: Document external clocks for MSM8998 gcc

The global clock controller on MSM8998 can consume a number of external
clocks.  Document them.

For 7180 and 8150, the hardware always exists, so no clocks are truly
optional.  Therefore, simplify the binding by removing the min/max
qualifiers to clocks.  Also, fixup an example so that dt_binding_check
passes.

Signed-off-by: Jeffrey Hugo <jhugo@...eaurora.org>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../devicetree/bindings/clock/qcom,gcc.yaml        | 73 +++++++++++++++++-----
 1 file changed, 59 insertions(+), 14 deletions(-)

diff --git a/Documentation/devicetree/bindings/clock/qcom,gcc.yaml b/Documentation/devicetree/bindings/clock/qcom,gcc.yaml
index e73a56f..f2b5cd6 100644
--- a/Documentation/devicetree/bindings/clock/qcom,gcc.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,gcc.yaml
@@ -40,20 +40,40 @@ properties:
        - qcom,gcc-sm8150
 
   clocks:
-    minItems: 1
-    maxItems: 3
-    items:
-      - description: Board XO source
-      - description: Board active XO source
-      - description: Sleep clock source
+    oneOf:
+      #qcom,gcc-sm8150
+      #qcom,gcc-sc7180
+      - items:
+        - description: Board XO source
+        - description: Board active XO source
+        - description: Sleep clock source
+      #qcom,gcc-msm8998
+      - items:
+        - description: Board XO source
+        - description: Sleep clock source
+        - description: USB 3.0 phy pipe clock
+        - description: UFS phy rx symbol clock for pipe 0
+        - description: UFS phy rx symbol clock for pipe 1
+        - description: UFS phy tx symbol clock
+        - description: PCIE phy pipe clock
 
   clock-names:
-    minItems: 1
-    maxItems: 3
-    items:
-      - const: bi_tcxo
-      - const: bi_tcxo_ao
-      - const: sleep_clk
+    oneOf:
+      #qcom,gcc-sm8150
+      #qcom,gcc-sc7180
+      - items:
+        - const: bi_tcxo
+        - const: bi_tcxo_ao
+        - const: sleep_clk
+      #qcom,gcc-msm8998
+      - items:
+        - const: xo
+        - const: sleep_clk
+        - const: usb3_pipe
+        - const: ufs_rx_symbol0
+        - const: ufs_rx_symbol1
+        - const: ufs_tx_symbol0
+        - const: pcie0_pipe
 
   '#clock-cells':
     const: 1
@@ -118,6 +138,7 @@ else:
       compatible:
         contains:
           enum:
+            - qcom,gcc-msm8998
             - qcom,gcc-sm8150
             - qcom,gcc-sc7180
   then:
@@ -179,10 +200,34 @@ examples:
     clock-controller@...000 {
       compatible = "qcom,gcc-sc7180";
       reg = <0x100000 0x1f0000>;
-      clocks = <&rpmhcc 0>, <&rpmhcc 1>;
-      clock-names = "bi_tcxo", "bi_tcxo_ao";
+      clocks = <&rpmhcc 0>, <&rpmhcc 1>, <0>;
+      clock-names = "bi_tcxo", "bi_tcxo_ao", "sleep_clk";
+      #clock-cells = <1>;
+      #reset-cells = <1>;
+      #power-domain-cells = <1>;
+    };
+
+  # Example of MSM8998 GCC:
+  - |
+    clock-controller@...000 {
+      compatible = "qcom,gcc-msm8998";
       #clock-cells = <1>;
       #reset-cells = <1>;
       #power-domain-cells = <1>;
+      reg = <0x00100000 0xb0000>;
+      clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>,
+               <&sleep>,
+               <0>,
+               <0>,
+               <0>,
+               <0>,
+               <0>;
+      clock-names = "xo",
+                    "sleep",
+                    "usb3_pipe",
+                    "ufs_rx_symbol0",
+                    "ufs_rx_symbol1",
+                    "ufs_tx_symbol0",
+                    "pcie0_pipe";
     };
 ...
-- 
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