From 5b42aac8904bfe8fcd65179c0fe71a6a1109ee53 Mon Sep 17 00:00:00 2001 From: Jan Kotas Date: Thu, 13 Dec 2018 12:49:28 +0000 Subject: dt-bindings: clk: Add bindings for Fixed MMIO clock This patch adds a DT binding documentation for Fixed Memory Mapped IO clocks. Signed-off-by: Jan Kotas Signed-off-by: Stephen Boyd --- .../devicetree/bindings/clock/fixed-mmio-clock.txt | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/fixed-mmio-clock.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/clock/fixed-mmio-clock.txt b/Documentation/devicetree/bindings/clock/fixed-mmio-clock.txt new file mode 100644 index 000000000000..c359367fd1a9 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/fixed-mmio-clock.txt @@ -0,0 +1,24 @@ +Binding for simple memory mapped io fixed-rate clock sources. +The driver reads a clock frequency value from a single 32-bit memory mapped +I/O register and registers it as a fixed rate clock. + +It was designed for test systems, like FPGA, not for complete, finished SoCs. + +This binding uses the common clock binding[1]. + +[1] Documentation/devicetree/bindings/clock/clock-bindings.txt + +Required properties: +- compatible : shall be "fixed-mmio-clock". +- #clock-cells : from common clock binding; shall be set to 0. +- reg : Address and length of the clock value register set. + +Optional properties: +- clock-output-names : From common clock binding. + +Example: +sysclock: sysclock@fd020004 { + #clock-cells = <0>; + compatible = "fixed-mmio-clock"; + reg = <0xfd020004 0x4>; +}; -- cgit