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firmware: qcom: scm: Convert to platform driver

PATCH New Andy Gross 1 participant 1 message Oct 7, 2015

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Andy Gross

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PATCH v2 1/1 firmware: qcom: scm: Convert to platform driver

This patch creates a platform driver for the SCM so that we can adequately manage resources. This removes clients having to carry the necessary clocks to use the SCM resources.

Signed-off-by Andy Gross <[email protected]>
---
 .../devicetree/bindings/firmware/qcom,scm.txt      |   25 ++++
 drivers/firmware/qcom_scm.c                        |  135 ++++++++++++++++++--
 2 files changed, 152 insertions(+), 8 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/firmware/qcom,scm.txt
Documentation/devicetree/bindings/firmware/qcom,scm.txt new file +25 -0
new file mode 100644
index 0000000..debcd32
@@ -0,0 +1,25 @@
+QCOM Secure Channel Manager (SCM)
+
+Qualcomm processors include an interface to communicate to the secure firmware.
+This interface allows for clients to request different types of actions.  These
+can include CPU power up/down, HDCP requests, loading of firmware, and other
+assorted actions.
+
+Required properties:
+- compatible: must contain "qcom,scm"
+- clocks: Should contain the core, iface, and bus clocks.
+- clock-names: Must contain "core" for the core clock, "iface" for the interface
+  clock and "bus" for the bus clock.
+
+Example:
+
+	firmware {
+		compatible = "simple-bus";
+
+		scm {
+			compatible = "qcom,scm";
+			clocks = <&gcc GCC_CE1_CLK> , <&gcc GCC_CE1_AXI_CLK>, <&gcc GCC_CE1_AHB_CLK>;
+			clock-names = "core", "bus", "iface";
+		};
+	};
+
drivers/firmware/qcom_scm.c +127 -8

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