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-rw-r--r--sound/soc/cirrus/Kconfig17
1 files changed, 17 insertions, 0 deletions
diff --git a/sound/soc/cirrus/Kconfig b/sound/soc/cirrus/Kconfig
index c7cd60f009e9..e09199124c36 100644
--- a/sound/soc/cirrus/Kconfig
+++ b/sound/soc/cirrus/Kconfig
@@ -9,6 +9,23 @@ config SND_EP93XX_SOC
config SND_EP93XX_SOC_I2S
tristate
+if SND_EP93XX_SOC_I2S
+
+config SND_EP93XX_SOC_I2S_WATCHDOG
+ bool "IRQ based underflow watchdog workaround"
+ default y
+ help
+ I2S controller on EP93xx seems to have undocumented HW issue.
+ Underflow of internal I2S controller FIFO could confuse the
+ state machine and the whole stream can be shifted by one byte
+ until I2S is disabled. This option enables IRQ based watchdog
+ which disables and re-enables I2S in case of underflow and
+ fills FIFO with zeroes.
+
+ If you are unsure how to answer this question, answer Y.
+
+endif # if SND_EP93XX_SOC_I2S
+
config SND_EP93XX_SOC_AC97
tristate
select AC97_BUS