renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-21 19:53:59 +08:00
Code

dt-bindings: clk: Hi6220: Document stub clock driver

Browse Source 
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>
This commit is contained in:
Leo Yan 2015-08-04 15:27:27 +08:00 committed by Michael Turquette
parent 7e2a51e0cf
commit 832446e8aa
1 changed files with 18 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
Documentation/devicetree/bindings/clock/hi6220-clock.txt
View File

@ -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.