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authorChen-Yu Tsai <wens@csie.org>2018-12-05 13:11:52 +0300
committerMaxime Ripard <maxime.ripard@bootlin.com>2018-12-05 14:08:30 +0300
commit7ff33bd321b1a1092ccf4b80a1742528754ecc30 (patch)
tree702e468878f4b2354d33ba1b47f51fca54cc54b7 /arch/arm/boot/dts/sun8i-a33.dtsi
parent82992cdf4af7553319e3551a07e6dc1f4c32ab41 (diff)
downloadlinux-7ff33bd321b1a1092ccf4b80a1742528754ecc30.tar.xz
ARM: dts: sun8i: a33: Drop audio codec oversampling rate to 128 fs
The current oversampling rate of 512 means that for 48 kHz 16 bit stereo, the MCLK is running at the same rate as the module clock, so there is no head room to support higher sampling rates. The codec however supports up to 192 kHz for playback. This patch drops the oversampling rate from 512 to 128, so that 192 kHz audio can be played back directly without downsampling. Ideally we should be using different oversampling rates for different sampling rates, but that's not possible without a platform-specific machine driver. Fixes: 870f1bd1f5e9 ("ARM: dts: sun8i: Add audio codec, dai and card for A33") Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Diffstat (limited to 'arch/arm/boot/dts/sun8i-a33.dtsi')
-rw-r--r--arch/arm/boot/dts/sun8i-a33.dtsi2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/sun8i-a33.dtsi b/arch/arm/boot/dts/sun8i-a33.dtsi
index 9ac4fae6c10d..626152c30f50 100644
--- a/arch/arm/boot/dts/sun8i-a33.dtsi
+++ b/arch/arm/boot/dts/sun8i-a33.dtsi
@@ -192,7 +192,7 @@
simple-audio-card,format = "i2s";
simple-audio-card,frame-master = <&link_codec>;
simple-audio-card,bitclock-master = <&link_codec>;
- simple-audio-card,mclk-fs = <512>;
+ simple-audio-card,mclk-fs = <128>;
simple-audio-card,aux-devs = <&codec_analog>;
simple-audio-card,routing =
"Left DAC", "AIF1 Slot 0 Left",