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[09/14] dt-bindings: arm: Document qcom,kpss-gcc

Message ID 1534167367-17545-10-git-send-email-sricharan@codeaurora.org (mailing list archive)
State Not Applicable, archived
Headers show
Series Krait clocks + Krait CPUfreq | expand

Commit Message

Sricharan Ramabadhran Aug. 13, 2018, 1:36 p.m. UTC 
From: Stephen Boyd <sboyd@codeaurora.org>

The ACC and GCC regions present in KPSSv1 contain registers to
control clocks and power to each Krait CPU and L2. Documenting
the bindings here.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
 .../devicetree/bindings/arm/msm/qcom,kpss-acc.txt  | 19 ++++++++++
 .../devicetree/bindings/arm/msm/qcom,kpss-gcc.txt  | 44 ++++++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt
index 1333db9..7f69636 100644
--- a/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt
+++ b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt
@@ -21,10 +21,29 @@  PROPERTIES
 		    the register region. An optional second element specifies
 		    the base address and size of the alias register region.
 
+- clocks:
+        Usage: required
+        Value type: <prop-encoded-array>
+        Definition: reference to the pll parents.
+
+- clock-names:
+        Usage: required
+        Value type: <stringlist>
+        Definition: must be "pll8_vote", "pxo".
+
+- clock-output-names:
+	Usage: optional
+	Value type: <string>
+	Definition: Name of the output clock. Typically acpuX_aux where X is a
+		    CPU number starting at 0.
+
 Example:
 
 	clock-controller@2088000 {
 		compatible = "qcom,kpss-acc-v2";
 		reg = <0x02088000 0x1000>,
 		      <0x02008000 0x1000>;
+		clocks = <&gcc PLL8_VOTE>, <&gcc PXO_SRC>;
+		clock-names = "pll8_vote", "pxo";
+		clock-output-names = "acpu0_aux";
 	};
diff --git a/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt
new file mode 100644
index 0000000..e628758
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt
@@ -0,0 +1,44 @@ 
+Krait Processor Sub-system (KPSS) Global Clock Controller (GCC)
+
+PROPERTIES
+
+- compatible:
+	Usage: required
+	Value type: <string>
+	Definition: should be one of the following. The generic compatible
+			"qcom,kpss-gcc" should also be included.
+			"qcom,kpss-gcc-ipq8064", "qcom,kpss-gcc"
+			"qcom,kpss-gcc-apq8064", "qcom,kpss-gcc"
+			"qcom,kpss-gcc-msm8974", "qcom,kpss-gcc"
+			"qcom,kpss-gcc-msm8960", "qcom,kpss-gcc"
+
+- reg:
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: base address and size of the register region
+
+- clocks:
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: reference to the pll parents.
+
+- clock-names:
+	Usage: required
+	Value type: <stringlist>
+	Definition: must be "pll8_vote", "pxo".
+
+- clock-output-names:
+	Usage: required
+	Value type: <string>
+	Definition: Name of the output clock. Typically acpu_l2_aux indicating
+		    an L2 cache auxiliary clock.
+
+Example:
+
+	l2cc: clock-controller@2011000 {
+		compatible = "qcom,kpss-gcc-ipq8064", "qcom,kpss-gcc";
+		reg = <0x2011000 0x1000>;
+		clocks = <&gcc PLL8_VOTE>, <&gcc PXO_SRC>;
+		clock-names = "pll8_vote", "pxo";
+		clock-output-names = "acpu_l2_aux";
+	};