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| author | Padmavathi Venna <padma.v@samsung.com> | 2014-11-07 12:24:40 +0530 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-11-07 10:41:22 +0000 |
| commit | a5a56871f804edac93a53b5e871c0e9818fb9033 (patch) | |
| tree | b5d9183ac7f4cd32d4f59f9bc305432d0fbc738b /Documentation | |
| parent | b07597367001c2c4f36a97863530f71b84060d3d (diff) | |
| download | blackbird-op-linux-a5a56871f804edac93a53b5e871c0e9818fb9033.tar.gz blackbird-op-linux-a5a56871f804edac93a53b5e871c0e9818fb9033.zip | |
ASoC: samsung: add support for exynos7 I2S controller
Exynos7 I2S controller has no internal dma, supports more
no. of root clock sampling frequencies and has more no.of Rx
fifos to support 7.1CH recording in TDM mode. Due to more no.
of root clock frequency values some of the bit offsets got
shifted up by one. Also I2S1 on previous Samsung platforms
uses v3 dai type but on Exynos7 it is upgraded to v5 with
slightly modified register offsets for supporting more no.of
RFS values. Due to the above changes, the driver has to be
modified to handle all versions of I2S controller. For this
I introduced a new structure to hold modified bit offsets and
masks which is passed as dai data.
Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/samsung-i2s.txt | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/sound/samsung-i2s.txt b/Documentation/devicetree/bindings/sound/samsung-i2s.txt index 7386d444ada1..d188296bb6ec 100644 --- a/Documentation/devicetree/bindings/sound/samsung-i2s.txt +++ b/Documentation/devicetree/bindings/sound/samsung-i2s.txt @@ -6,10 +6,17 @@ Required SoC Specific Properties: - samsung,s3c6410-i2s: for 8/16/24bit stereo I2S. - 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(7.1) I2S with - secondary fifo, s/w reset control, internal mux for root clk src and - TDM support. TDM (Time division multiplexing) is to allow transfer of - multiple channel audio data on single data line. + - samsung,exynos5420-i2s: for 8/16/24bit multichannel(5.1) I2S for + playback, sterio 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. + - samsung,exynos7-i2s: with all the available features of exynos5 i2s, + exynos7 I2S has 7.1 channel TDM support for capture, secondary fifo + with only external dma and more no.of root clk sampling frequencies. + - samsung,exynos7-i2s1: I2S1 on previous samsung platforms supports + stereo channels. exynos7 i2s1 upgraded to 5.1 multichannel with + slightly modified bit offsets. - reg: physical base address of the controller and length of memory mapped region. |
