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authorKevin Hilman <khilman@baylibre.com>2016-09-14 11:21:15 -0700
committerKevin Hilman <khilman@baylibre.com>2016-09-14 11:21:15 -0700
commitdcdcc6602292514b0f82b359f2ff30f2fb9a6305 (patch)
treed81467b66b321fe658b732d77dae9eab1c3f3472 /Documentation
parentc940d7658de0b91449d59d1ab8a9c1d24f0a8564 (diff)
parent19a2a85d7157373b3540e9a0baff97d7cdca0dd5 (diff)
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Merge branch 'clk-meson-gxbb' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux into v4.8/drivers
* 'clk-meson-gxbb' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: meson-gxbb: Export PWM related clocks for DT meson: clk: Add support for clock gates gxbb: clk: Adjust MESON_GATE macro to be shared with meson8b clk: meson: Copy meson8b CLKID defines to private header file meson: clk: Rename register names according to Amlogic datasheet meson: clk: Move register definitions to meson8b.h clk: meson: Rename meson8b-clkc.c to reflect gxbb naming convention clk: meson: Fix invalid use of sizeof in gxbb_aoclkc_probe() clk: meson: Add GXBB AO Clock and Reset controller driver dt-bindings: clock: reset: Add GXBB AO Clock and Reset Bindings clk: gxbb: add MMC gate clocks, and expose for DT
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/clock/amlogic,gxbb-aoclkc.txt45
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diff --git a/Documentation/devicetree/bindings/clock/amlogic,gxbb-aoclkc.txt b/Documentation/devicetree/bindings/clock/amlogic,gxbb-aoclkc.txt
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+* Amlogic GXBB AO Clock and Reset Unit
+
+The Amlogic GXBB AO clock controller generates and supplies clock to various
+controllers within the Always-On part of the SoC.
+
+Required Properties:
+
+- compatible: should be "amlogic,gxbb-aoclkc"
+- reg: physical base address of the clock controller and length of memory
+ mapped region.
+
+- #clock-cells: should be 1.
+
+Each clock is assigned an identifier and client nodes can use this identifier
+to specify the clock which they consume. All available clocks are defined as
+preprocessor macros in the dt-bindings/clock/gxbb-aoclkc.h header and can be
+used in device tree sources.
+
+- #reset-cells: should be 1.
+
+Each reset is assigned an identifier and client nodes can use this identifier
+to specify the reset which they consume. All available resets are defined as
+preprocessor macros in the dt-bindings/reset/gxbb-aoclkc.h header and can be
+used in device tree sources.
+
+Example: AO Clock controller node:
+
+ clkc_AO: clock-controller@040 {
+ compatible = "amlogic,gxbb-aoclkc";
+ reg = <0x0 0x040 0x0 0x4>;
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ };
+
+Example: UART controller node that consumes the clock and reset generated
+ by the clock controller:
+
+ uart_AO: serial@4c0 {
+ compatible = "amlogic,meson-uart";
+ reg = <0x4c0 0x14>;
+ interrupts = <0 90 1>;
+ clocks = <&clkc_AO CLKID_AO_UART1>;
+ resets = <&clkc_AO RESET_AO_UART1>;
+ status = "disabled";
+ };