Based on kernel version 5.14
. Page generated on 2021-08-31 10:40 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | * 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>; /* ... */ }; |