mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
53 lines
1.8 KiB
53 lines
1.8 KiB
* Samsung Audio Subsystem Clock Controller |
|
|
|
The Samsung Audio Subsystem clock controller generates and supplies clocks |
|
to Audio Subsystem block available in the S5PV210 and compatible SoCs. |
|
|
|
Required Properties: |
|
|
|
- compatible: should be "samsung,s5pv210-audss-clock". |
|
- reg: physical base address and length of the controller's register set. |
|
|
|
- #clock-cells: should be 1. |
|
|
|
- clocks: |
|
- hclk: AHB bus clock of the Audio Subsystem. |
|
- xxti: Optional fixed rate PLL reference clock, parent of mout_audss. If |
|
not specified (i.e. xusbxti is used for PLL reference), it is fixed to |
|
a clock named "xxti". |
|
- fout_epll: Input PLL to the AudioSS block, parent of mout_audss. |
|
- iiscdclk0: Optional external i2s clock, parent of mout_i2s. If not |
|
specified, it is fixed to a clock named "iiscdclk0". |
|
- sclk_audio0: Audio bus clock, parent of mout_i2s. |
|
|
|
- clock-names: Aliases for the above clocks. They should be "hclk", |
|
"xxti", "fout_epll", "iiscdclk0", and "sclk_audio0" respectively. |
|
|
|
All available clocks are defined as preprocessor macros in |
|
dt-bindings/clock/s5pv210-audss-clk.h header and can be used in device |
|
tree sources. |
|
|
|
Example: Clock controller node. |
|
|
|
clk_audss: clock-controller@c0900000 { |
|
compatible = "samsung,s5pv210-audss-clock"; |
|
reg = <0xc0900000 0x1000>; |
|
#clock-cells = <1>; |
|
clock-names = "hclk", "xxti", |
|
"fout_epll", "sclk_audio0"; |
|
clocks = <&clocks DOUT_HCLKP>, <&xxti>, |
|
<&clocks FOUT_EPLL>, <&clocks SCLK_AUDIO0>; |
|
}; |
|
|
|
Example: I2S controller node that consumes the clock generated by the clock |
|
controller. Refer to the standard clock bindings for information |
|
about 'clocks' and 'clock-names' property. |
|
|
|
i2s0: i2s@3830000 { |
|
/* ... */ |
|
clock-names = "iis", "i2s_opclk0", |
|
"i2s_opclk1"; |
|
clocks = <&clk_audss CLK_I2S>, <&clk_audss CLK_I2S>, |
|
<&clk_audss CLK_DOUT_AUD_BUS>; |
|
/* ... */ |
|
};
|
|
|