From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Gross Subject: [Patch v3 1/8] dt/bindings: firmware: Add Qualcomm SCM binding Date: Wed, 4 May 2016 17:50:38 -0500 Message-ID: <1462402245-18295-2-git-send-email-andy.gross@linaro.org> References: <1462402245-18295-1-git-send-email-andy.gross@linaro.org> Return-path: In-Reply-To: <1462402245-18295-1-git-send-email-andy.gross@linaro.org> Sender: linux-kernel-owner@vger.kernel.org To: linux-arm-msm@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Stephen Boyd , Bjorn Andersson , jilai wang , devicetree@vger.kernel.org, Andy Gross List-Id: devicetree@vger.kernel.org This patch adds the device tree support for the Qualcomm SCM firmware. Signed-off-by: Andy Gross --- .../devicetree/bindings/firmware/qcom,scm.txt | 26 ++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 Documentation/devicetree/bindings/firmware/qcom,scm.txt diff --git a/Documentation/devicetree/bindings/firmware/qcom,scm.txt b/Documentation/devicetree/bindings/firmware/qcom,scm.txt new file mode 100644 index 0000000..ee7cd12 --- /dev/null +++ b/Documentation/devicetree/bindings/firmware/qcom,scm.txt @@ -0,0 +1,26 @@ +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 one of the following: + * "qcom,scm-a-family" for A family Qualcomm processors (APQ8064, MSM8960, etc) + * "qcom,scm" for B family and later processors (MSM8916, APQ8084, MSM8974, etc) +- clocks: One to three clocks may be required based on compatible. + * Only core clock required for "qcom,scm-apq8064" + * Core, iface, and bus clocks required for "qcom,scm" +- clock-names: Must contain "core" for the core clock, "iface" for the interface + clock and "bus" for the bus clock per the requirements of the compatible. + +Example for MSM8916: + + firmware { + scm { + compatible = "qcom,scm"; + clocks = <&gcc GCC_CRYPTO_CLK> , <&gcc GCC_CRYPTO_AXI_CLK>, <&gcc GCC_CRYPTO_AHB_CLK>; + clock-names = "core", "bus", "iface"; + }; + }; -- 1.9.1