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authorStephen Boyd <sboyd@codeaurora.org>2016-05-06 18:21:23 (GMT)
committerStephen Boyd <sboyd@codeaurora.org>2016-05-06 18:21:23 (GMT)
commitf3bf9841b837cba56d1e42d510c59623f14de3e4 (patch)
treec22e8d7cc2ab6f67bfbec570f0434166a6e76ef6 /Documentation/devicetree/bindings/clock
parent4087a5f2e5e75a6d0231d1318bada1a12972a5fd (diff)
parent6c9da387c8d5c5254857d2782bd6c314226f4f27 (diff)
downloadlinux-f3bf9841b837cba56d1e42d510c59623f14de3e4.tar.xz
Merge branch 'clk-hi3519' into clk-next
* clk-hi3519: clk: hisilicon: add CRG driver for hi3519 soc clk: hisilicon: export some hisilicon APIs to modules reset: hisilicon: add reset controller driver for hisilicon SOCs
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+* Hisilicon Hi3519 Clock and Reset Generator(CRG)
+
+The Hi3519 CRG module provides clock and reset signals to various
+controllers within the SoC.
+
+This binding uses the following bindings:
+ Documentation/devicetree/bindings/clock/clock-bindings.txt
+ Documentation/devicetree/bindings/reset/reset.txt
+
+Required Properties:
+
+- compatible: should be one of the following.
+ - "hisilicon,hi3519-crg" - controller compatible with Hi3519 SoC.
+
+- reg: physical base address of the controller and length of memory mapped
+ region.
+
+- #clock-cells: should be 1.
+
+Each clock is assigned an identifier and client nodes use this identifier
+to specify the clock which they consume.
+
+All these identifier could be found in <dt-bindings/clock/hi3519-clock.h>.
+
+- #reset-cells: should be 2.
+
+A reset signal can be controlled by writing a bit register in the CRG module.
+The reset specifier consists of two cells. The first cell represents the
+register offset relative to the base address. The second cell represents the
+bit index in the register.
+
+Example: CRG nodes
+CRG: clock-reset-controller@12010000 {
+ compatible = "hisilicon,hi3519-crg";
+ reg = <0x12010000 0x10000>;
+ #clock-cells = <1>;
+ #reset-cells = <2>;
+};
+
+Example: consumer nodes
+i2c0: i2c@12110000 {
+ compatible = "hisilicon,hi3519-i2c";
+ reg = <0x12110000 0x1000>;
+ clocks = <&CRG HI3519_I2C0_RST>;
+ resets = <&CRG 0xe4 0>;
+};