diff options
Diffstat (limited to 'dts/Bindings/sound/samsung-i2s.txt')
| -rw-r--r-- | dts/Bindings/sound/samsung-i2s.txt | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/dts/Bindings/sound/samsung-i2s.txt b/dts/Bindings/sound/samsung-i2s.txt index bf100cd0d0..a88cb00fa0 100644 --- a/dts/Bindings/sound/samsung-i2s.txt +++ b/dts/Bindings/sound/samsung-i2s.txt @@ -7,7 +7,7 @@ Required SoC Specific Properties: - samsung,s5pv210-i2s: for 8/16/24bit multichannel(5.1) I2S with secondary fifo, s/w reset control and internal mux for root clk src. - samsung,exynos5420-i2s: for 8/16/24bit multichannel(5.1) I2S for - playback, sterio channel capture, secondary fifo using internal + playback, stereo channel capture, secondary fifo using internal or external dma, s/w reset control, internal mux for root clk src and 7.1 channel TDM support for playback. TDM (Time division multiplexing) is to allow transfer of multiple channel audio data on single data line. @@ -25,7 +25,7 @@ Required SoC Specific Properties: These strings correspond 1:1 with the ordered pairs in dmas. - clocks: Handle to iis clock and RCLK source clk. - clock-names: - i2s0 uses some base clks from CMU and some are from audio subsystem internal + i2s0 uses some base clocks from CMU and some are from audio subsystem internal clock controller. The clock names for i2s0 should be "iis", "i2s_opclk0" and "i2s_opclk1" as shown in the example below. i2s1 and i2s2 uses clocks from CMU. The clock names for i2s1 and i2s2 should @@ -36,9 +36,9 @@ Required SoC Specific Properties: - #clock-cells: should be 1, this property must be present if the I2S device is a clock provider in terms of the common clock bindings, described in ../clock/clock-bindings.txt. -- clock-output-names: from the common clock bindings, names of the CDCLK - I2S output clocks, suggested values are "i2s_cdclk0", "i2s_cdclk1", - "i2s_cdclk3" for the I2S0, I2S1, I2S2 devices recpectively. +- clock-output-names (deprecated): from the common clock bindings, names of + the CDCLK I2S output clocks, suggested values are "i2s_cdclk0", "i2s_cdclk1", + "i2s_cdclk3" for the I2S0, I2S1, I2S2 devices respectively. There are following clocks available at the I2S device nodes: CLK_I2S_CDCLK - the CDCLK (CODECLKO) gate clock, @@ -49,9 +49,10 @@ There are following clocks available at the I2S device nodes: Refer to the SoC datasheet for availability of the above clocks. The CLK_I2S_RCLK_PSR and CLK_I2S_RCLK_SRC clocks are usually only available -in the IIS Multi Audio Interface (I2S0). -Note: Old DTs may not have the #clock-cells, clock-output-names properties -and then not use the I2S node as a clock supplier. +in the IIS Multi Audio Interface. + +Note: Old DTs may not have the #clock-cells property and then not use the I2S +node as a clock supplier. Optional SoC Specific Properties: @@ -59,6 +60,7 @@ Optional SoC Specific Properties: sub system(used in secondary sound source). - pinctrl-0: Should specify pin control groups used for this controller. - pinctrl-names: Should contain only one value - "default". +- #sound-dai-cells: should be 1. Example: @@ -74,9 +76,9 @@ i2s0: i2s@3830000 { <&clock_audss EXYNOS_I2S_BUS>, <&clock_audss EXYNOS_SCLK_I2S>; clock-names = "iis", "i2s_opclk0", "i2s_opclk1"; - #clock-cells; - clock-output-names = "i2s_cdclk0"; + #clock-cells = <1>; samsung,idma-addr = <0x03000000>; pinctrl-names = "default"; pinctrl-0 = <&i2s0_bus>; + #sound-dai-cells = <1>; }; |