Hi Henrik,
On 28.04.23 16:39, Henrik Grimler wrote:
On Fri, Apr 28, 2023 at 01:30:11AM +0200, Jakob Hauser wrote:
...
+ regulators:
+ description:
+ The regulators of RT5033 have to be instantiated under a sub-node named
+ "regulators". For SAFE_LDO voltage there is only one value of 4.9 V. LDO
Is only 4.9 V valid for SAFE_LDO? If I am reading driver found in
vendor kernel for SM-A500F it seems to to allow values between 3.3 and
4.95 V [1]. Same range is also written in the devicetree for the
device [2].
[1] https://github.com/msm8916-mainline/linux-downstream/blob/SM-A500F/drivers/regulator/rt5033_regulator.c#L109-L114
[2] https://github.com/msm8916-mainline/linux-downstream/blob/SM-A500F/arch/arm/boot/dts/samsung/msm8916/msm8916-sec-a5u-eur-r01.dtsi#L148-L149
You're right, the RT5033 regulator SAFE_LDO is capable of more than one
voltage.
In the mainline rt5033-regulator driver, however, for SAFE_LDO only the
one voltage at 4.9 V is implemented so far.
https://github.com/torvalds/linux/blob/v6.3/include/linux/mfd/rt5033-private.h#L211-L212
https://github.com/torvalds/linux/blob/v6.3/drivers/regulator/rt5033-regulator.c#L83
For the charger driver this seems sufficient.
Kind regards,
Jakob
