This is a note to let you know that I've just added the patch titled
regulator: rk808: Add apply_bit for BUCK3 on RK809
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
regulator-rk808-add-apply_bit-for-buck3-on-rk809.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 14f49023a77d40bda341f0cb4567925c2ed3a177
Author: Mikhail Rudenko <mike.rudenko@xxxxxxxxx>
Date: Thu Oct 17 21:37:28 2024 +0300
regulator: rk808: Add apply_bit for BUCK3 on RK809
[ Upstream commit 5e53e4a66bc7430dd2d11c18a86410e3a38d2940 ]
Currently, RK809's BUCK3 regulator is modelled in the driver as a
configurable regulator with 0.5-2.4V voltage range. But the voltage
setting is not actually applied, because when bit 6 of
PMIC_POWER_CONFIG register is set to 0 (default), BUCK3 output voltage
is determined by the external feedback resistor. Fix this, by setting
bit 6 when voltage selection is set. Existing users which do not
specify voltage constraints in their device trees will not be affected
by this change, since no voltage setting is applied in those cases,
and bit 6 is not enabled.
Signed-off-by: Mikhail Rudenko <mike.rudenko@xxxxxxxxx>
Link: https://patch.msgid.link/20241017-rk809-dcdc3-v1-1-e3c3de92f39c@xxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/regulator/rk808-regulator.c b/drivers/regulator/rk808-regulator.c
index e926c1a858460..e3b9d5ce8dbbf 100644
--- a/drivers/regulator/rk808-regulator.c
+++ b/drivers/regulator/rk808-regulator.c
@@ -944,6 +944,8 @@ static const struct regulator_desc rk809_reg[] = {
.n_linear_ranges = ARRAY_SIZE(rk817_buck1_voltage_ranges),
.vsel_reg = RK817_BUCK3_ON_VSEL_REG,
.vsel_mask = RK817_BUCK_VSEL_MASK,
+ .apply_reg = RK817_POWER_CONFIG,
+ .apply_bit = RK817_BUCK3_FB_RES_INTER,
.enable_reg = RK817_POWER_EN_REG(0),
.enable_mask = ENABLE_MASK(RK817_ID_DCDC3),
.enable_val = ENABLE_MASK(RK817_ID_DCDC3),
