From f9c7d4f99f51ac9c1cf513111c21395f93d2dd53 Mon Sep 17 00:00:00 2001 From: Sean Anderson Date: Wed, 24 Jun 2020 06:41:11 -0400 Subject: clk: Add K210 clock support Due to the large number of clocks, I decided to use the CCF. The overall structure is modeled after the imx code. Clocks parameters are stored in several arrays, and are then instantiated at run-time. There are some translation macros (FOOIFY()) which allow for more dense packing. Signed-off-by: Sean Anderson CC: Lukasz Majewski --- .../mfd/kendryte,k210-sysctl.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 doc/device-tree-bindings/mfd/kendryte,k210-sysctl.txt (limited to 'doc') diff --git a/doc/device-tree-bindings/mfd/kendryte,k210-sysctl.txt b/doc/device-tree-bindings/mfd/kendryte,k210-sysctl.txt new file mode 100644 index 0000000..5b24abc --- /dev/null +++ b/doc/device-tree-bindings/mfd/kendryte,k210-sysctl.txt @@ -0,0 +1,33 @@ +Kendryte K210 Sysctl + +This binding describes the K210 sysctl device, which contains many miscellaneous +registers controlling system functionality. This node is a register map and can +be reference by other bindings which need a phandle to the K210 sysctl regmap. + +Required properties: +- compatible: should be + "kendryte,k210-sysctl", "syscon", "simple-mfd" +- reg: address and length of the sysctl registers +- reg-io-width: must be <4> + +Clock sub-node + +This node is a binding for the clock tree driver + +Required properties: +- compatible: should be "kendryte,k210-clk" +- clocks: phandle to the "in0" external oscillator +- #clock-cells: must be <1> + +Example: +sysctl: syscon@50440000 { + compatible = "kendryte,k210-sysctl", "syscon", "simple-mfd"; + reg = <0x50440000 0x100>; + reg-io-width = <4>; + + sysclk: clock-controller { + compatible = "kendryte,k210-clk"; + clocks = <&in0>; + #clock-cells = <1>; + }; +}; -- cgit v1.1