From: Hans de Goede hdegoede@redhat.com
commit 5cacc6f5764e94fa753b2c1f5f7f1f3f74286e82 upstream.
The RT5670_PWR_ANLG1 register has 3 bits to select the LDO voltage, so the correct mask is 0x7 not 0x3.
Because of this wrong mask we were programming the ldo bits to a setting of binary 001 (0x05 & 0x03) instead of binary 101 when moving to SND_SOC_BIAS_PREPARE.
According to the datasheet 001 is a reserved value, so no idea what it did, since the driver was working fine before I guess we got lucky and it does something which is ok.
Fixes: 5e8351de740d ("ASoC: add RT5670 CODEC driver") Signed-off-by: Hans de Goede hdegoede@redhat.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200628155231.71089-3-hdegoede@redhat.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- sound/soc/codecs/rt5670.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/sound/soc/codecs/rt5670.h +++ b/sound/soc/codecs/rt5670.h @@ -757,7 +757,7 @@ #define RT5670_PWR_VREF2_BIT 4 #define RT5670_PWR_FV2 (0x1 << 3) #define RT5670_PWR_FV2_BIT 3 -#define RT5670_LDO_SEL_MASK (0x3) +#define RT5670_LDO_SEL_MASK (0x7) #define RT5670_LDO_SEL_SFT 0
/* Power Management for Analog 2 (0x64) */