diff options
| -rw-r--r-- | drivers/mfd/cs42l43.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mfd/cs42l43.c b/drivers/mfd/cs42l43.c index e5f17fc430e4..11a1b7f1e121 100644 --- a/drivers/mfd/cs42l43.c +++ b/drivers/mfd/cs42l43.c @@ -48,6 +48,7 @@ #define CS42L43_MCU_SUPPORTED_REV 0x2105 #define CS42L43_MCU_SHADOW_REGS_REQUIRED_REV 0x2200 +#define CS42L43_BIOS_SHADOW_REGS_REQUIRED_REV 0x1002 #define CS42L43_MCU_SUPPORTED_BIOS_REV 0x0001 #define CS42L43_VDDP_DELAY_US 50 @@ -773,7 +774,8 @@ static int cs42l43_mcu_update_step(struct cs42l43 *cs42l43) * Later versions of the firmwware require the driver to access some * features through a set of shadow registers. */ - shadow = mcu_rev >= CS42L43_MCU_SHADOW_REGS_REQUIRED_REV; + shadow = (mcu_rev >= CS42L43_MCU_SHADOW_REGS_REQUIRED_REV) || + (bios_rev >= CS42L43_BIOS_SHADOW_REGS_REQUIRED_REV); ret = regmap_read(cs42l43->regmap, CS42L43_BOOT_CONTROL, &secure_cfg); if (ret) { |