From: Andy Gross Date: Fri, 3 Jun 2016 23:25:21 +0000 (-0500) Subject: dt/bindings: firmware: Add Qualcomm SCM binding X-Git-Tag: Ubuntu-5.10.0-12.13~12139^2~19^2~19 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=ece85839d228d8b2948a69b6f9929266bb8d5901;p=mirror_ubuntu-hirsute-kernel.git dt/bindings: firmware: Add Qualcomm SCM binding This patch adds the device tree support for the Qualcomm SCM firmware. Signed-off-by: Andy Gross Reviewed-by: Stephen Boyd Acked-by: Bjorn Andersson Acked-by: Rob Herring --- diff --git a/Documentation/devicetree/bindings/firmware/qcom,scm.txt b/Documentation/devicetree/bindings/firmware/qcom,scm.txt new file mode 100644 index 000000000000..3b4436e56865 --- /dev/null +++ b/Documentation/devicetree/bindings/firmware/qcom,scm.txt @@ -0,0 +1,28 @@ +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-apq8064" for APQ8064 platforms + * "qcom,scm-msm8660" for MSM8660 platforms + * "qcom,scm-msm8690" for MSM8690 platforms + * "qcom,scm" for 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", "qcom,scm-msm8660", and "qcom,scm-msm8960" + * 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"; + }; + };