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author | Leo Yan <leo.yan@linaro.org> | 2015-08-04 10:27:27 +0300 |
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committer | Michael Turquette <mturquette@baylibre.com> | 2015-08-25 02:49:10 +0300 |
commit | 832446e8aaaeaf9365da18f95f01a42e6da27279 (patch) | |
tree | da685b387de462dc2394f60a7ac80a5b5ff699e0 /Documentation | |
parent | 7e2a51e0cf75028888e5c670b3a3963e1716bdff (diff) | |
download | linux-832446e8aaaeaf9365da18f95f01a42e6da27279.tar.xz |
dt-bindings: clk: Hi6220: Document stub clock driver
Document the new compatible for stub clock driver which is used for CPU
and DDR's dynamic frequency scaling.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/clock/hi6220-clock.txt | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/clock/hi6220-clock.txt b/Documentation/devicetree/bindings/clock/hi6220-clock.txt index 259e30af9597..e4d5feaebc29 100644 --- a/Documentation/devicetree/bindings/clock/hi6220-clock.txt +++ b/Documentation/devicetree/bindings/clock/hi6220-clock.txt @@ -15,19 +15,36 @@ Required Properties: - "hisilicon,hi6220-sysctrl" - "hisilicon,hi6220-mediactrl" - "hisilicon,hi6220-pmctrl" + - "hisilicon,hi6220-stub-clk" - reg: physical base address of the controller and length of memory mapped region. - #clock-cells: should be 1. -For example: +Optional Properties: + +- hisilicon,hi6220-clk-sram: phandle to the syscon managing the SoC internal sram; + the driver need use the sram to pass parameters for frequency change. + +- mboxes: use the label reference for the mailbox as the first parameter, the + second parameter is the channel number. + +Example 1: sys_ctrl: sys_ctrl@f7030000 { compatible = "hisilicon,hi6220-sysctrl", "syscon"; reg = <0x0 0xf7030000 0x0 0x2000>; #clock-cells = <1>; }; +Example 2: + stub_clock: stub_clock { + compatible = "hisilicon,hi6220-stub-clk"; + hisilicon,hi6220-clk-sram = <&sram>; + #clock-cells = <1>; + mboxes = <&mailbox 1>; + }; + Each clock is assigned an identifier and client nodes use this identifier to specify the clock which they consume. |