1ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only 2*8a40e95aSKuninori Morimotomenu "Cirrus Logic" 3*8a40e95aSKuninori Morimoto 40ed275efSAlexander Shiyanconfig SND_EP93XX_SOC 50ed275efSAlexander Shiyan tristate "SoC Audio support for the Cirrus Logic EP93xx series" 617cb37aaSAlexander Shiyan depends on ARCH_EP93XX || COMPILE_TEST 7e27e8a60SLars-Peter Clausen select SND_SOC_GENERIC_DMAENGINE_PCM 80ed275efSAlexander Shiyan help 90ed275efSAlexander Shiyan Say Y or M if you want to add support for codecs attached to 100ed275efSAlexander Shiyan the EP93xx I2S or AC97 interfaces. 110ed275efSAlexander Shiyan 120ed275efSAlexander Shiyanconfig SND_EP93XX_SOC_I2S 1324f934beSAlexander Sverdlin tristate "I2S controller support for the Cirrus Logic EP93xx series" 1424f934beSAlexander Sverdlin depends on SND_EP93XX_SOC 1524f934beSAlexander Sverdlin help 1624f934beSAlexander Sverdlin Say Y or M if you want to add support for codecs attached to 1724f934beSAlexander Sverdlin the EP93xx I2S interface. 180ed275efSAlexander Shiyan 1998e1241cSAlexander Sverdlinif SND_EP93XX_SOC_I2S 2098e1241cSAlexander Sverdlin 2198e1241cSAlexander Sverdlinconfig SND_EP93XX_SOC_I2S_WATCHDOG 2298e1241cSAlexander Sverdlin bool "IRQ based underflow watchdog workaround" 2398e1241cSAlexander Sverdlin default y 2498e1241cSAlexander Sverdlin help 2598e1241cSAlexander Sverdlin I2S controller on EP93xx seems to have undocumented HW issue. 2698e1241cSAlexander Sverdlin Underflow of internal I2S controller FIFO could confuse the 2798e1241cSAlexander Sverdlin state machine and the whole stream can be shifted by one byte 2898e1241cSAlexander Sverdlin until I2S is disabled. This option enables IRQ based watchdog 2998e1241cSAlexander Sverdlin which disables and re-enables I2S in case of underflow and 3098e1241cSAlexander Sverdlin fills FIFO with zeroes. 3198e1241cSAlexander Sverdlin 3298e1241cSAlexander Sverdlin If you are unsure how to answer this question, answer Y. 3398e1241cSAlexander Sverdlin 3498e1241cSAlexander Sverdlinendif # if SND_EP93XX_SOC_I2S 3598e1241cSAlexander Sverdlin 36*8a40e95aSKuninori Morimotoendmenu 37