[Sorry for the top post, can't reply properly from this Inbox] Could you please try applying this commit from linux-next? https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/drivers/base/regmap/regcache.c?id=3245d460a1eb55b5c3ca31dde7b5c5ac71546edf
Thanks, Fabio Estevam ________________________________________ From: Mika Penttilä <[email protected]> Sent: Monday, February 15, 2016 9:25 AM To: LKML; [email protected]; Fabio Estevam Subject: [REGRESSION, bisected] 4.5rc4 sound fsl-soc Hi, The following commit : 5c408fee254633a5be69505bc86c6b034f871ab4 is the first bad commit commit 5c408fee254633a5be69505bc86c6b034f871ab4 Author: Maciej S. Szmigiero <[email protected]> Date: Mon Jan 18 20:07:44 2016 +0100 ASoC: fsl_ssi: remove explicit register defaults There is no guarantee that on fsl_ssi module load SSI registers will have their power-on-reset values. In fact, if the driver is reloaded the values in registers will be whatever they were set to previously. However, the cache needs to be fully populated at probe time to avoid non-atomic allocations during register access. Special case here is imx21-class SSI, since according to datasheet it don't have SACC{ST,EN,DIS} regs. This fixes hard lockup on fsl_ssi module reload, at least in AC'97 mode. Fixes: 05cf237972fe ("ASoC: fsl_ssi: Add driver suspend and resume to support MEGA Fast") Signed-off-by: Maciej S. Szmigiero <[email protected]> Tested-by: Fabio Estevam <[email protected]> Signed-off-by: Mark Brown <[email protected]> causes regmap init failure when loading the sgtl5000 codec on imx6q, and leads to no audio. With the mentioned patch reverted sound works ok. --Mika
