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[v3,0/2] Enable VBUS current boost on pm8150b platforms

Message ID 20210427130712.2005456-1-bryan.odonoghue@linaro.org
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Series Enable VBUS current boost on pm8150b platforms | expand

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Bryan O'Donoghue April 27, 2021, 1:07 p.m. UTC 
V3:
- Drop the SoC regulator constraints for
  regulator-min-microamp
  regulator-max-microamp
  These will be applied on a per-board basis - Mark Brown

V2:
The first version of this patch set the current limit to 3 amps as was done
in downstream. Mark indicated a preference to set this on a per-system
basis instead of blitzing it, as in downstream.

Looking at what was upstream versus what was in my working tree I saw that
in fact the VBUS boost driver had been upstreamed minus accompanying DTS in
pm8150b.

So there's no need for a fixes as this driver doesn't appear to be in use.
A subsequent patchset will enable the VBUS boost for the two relevant
upstream platforms.

First thing though, is the driver + dts change.

- Use regulator_set_current_limit_regmap/regulator_get_current_limit_regmap
  with a relevant current-to-bitmap lookup.

- Add a parallel DTS entry to the pm8150b
  It looks like this was submitted upstream but not followed up on

  I've add regulator-min-microamp/regulator-max-microamp to Wesley's
  original work.

I've made sure to test that its possible to set the current to anything in
the range of 500 mA to 3 A and confirmed the output on a scope.

Once these two patches are in, I'll send out board enablement for the
sm8150-mtp and qrb5165-rb5.

https://lore.kernel.org/linux-arm-msm/8687acdb-75e9-5fc5-dd3e-9a19615676b5@linaro.org/T/#t

Bryan O'Donoghue (1):
  regulator: Add a routine to set the current limit for QCOM PMIC VBUS

Wesley Cheng (1):
  arm64: boot: dts: qcom: pm8150b: Add DTS node for PMIC VBUS booster

 arch/arm64/boot/dts/qcom/pm8150b.dtsi       |  6 ++++++
 drivers/regulator/qcom_usb_vbus-regulator.c | 12 ++++++++++++
 2 files changed, 18 insertions(+)