From 87360e3dd42bb627a9f2611f961728c0789e1c21 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Wed, 8 Jul 2015 14:44:21 +0200 Subject: dts: update to v4.2-rc1 Signed-off-by: Sascha Hauer --- dts/Bindings/clock/amlogic,meson8b-clkc.txt | 40 +++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 dts/Bindings/clock/amlogic,meson8b-clkc.txt (limited to 'dts/Bindings/clock/amlogic,meson8b-clkc.txt') diff --git a/dts/Bindings/clock/amlogic,meson8b-clkc.txt b/dts/Bindings/clock/amlogic,meson8b-clkc.txt new file mode 100644 index 0000000000..2b7b3fa588 --- /dev/null +++ b/dts/Bindings/clock/amlogic,meson8b-clkc.txt @@ -0,0 +1,40 @@ +* Amlogic Meson8b Clock and Reset Unit + +The Amlogic Meson8b clock controller generates and supplies clock to various +controllers within the SoC. + +Required Properties: + +- compatible: should be "amlogic,meson8b-clkc" +- reg: it must be composed by two tuples: + 0) physical base address of the xtal register and length of memory + mapped region. + 1) 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/meson8b-clkc.h header and can be +used in device tree sources. + +Example: Clock controller node: + + clkc: clock-controller@c1104000 { + #clock-cells = <1>; + compatible = "amlogic,meson8b-clkc"; + reg = <0xc1108000 0x4>, <0xc1104000 0x460>; + }; + + +Example: UART controller node that consumes the clock generated by the clock + controller: + + uart_AO: serial@c81004c0 { + compatible = "amlogic,meson-uart"; + reg = <0xc81004c0 0x14>; + interrupts = <0 90 1>; + clocks = <&clkc CLKID_CLK81>; + status = "disabled"; + }; -- cgit v1.2.3