From d496ad33e637da91257699732c46dc4eac19ff13 Mon Sep 17 00:00:00 2001 From: Maciej Strozek Date: Thu, 5 Dec 2024 11:58:19 +0000 Subject: [PATCH] mfd: cs42l43: Prepare support for updated bios patch Newer bios patch firmware versions now require use of the shadow register interface, which was previously only required by the full firmware, update the check accordingly. Signed-off-by: Maciej Strozek Signed-off-by: Charles Keepax Link: https://lore.kernel.org/r/20241205115822.2371719-1-ckeepax@opensource.cirrus.com Signed-off-by: Lee Jones --- drivers/mfd/cs42l43.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mfd/cs42l43.c b/drivers/mfd/cs42l43.c index e5f17fc430e48..11a1b7f1e121d 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) {