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[0/4] regulator: add support for the STM32 ADC booster

Message ID 1561709289-11174-1-git-send-email-fabrice.gasnier@st.com
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Series regulator: add support for the STM32 ADC booster | expand

Message

Fabrice Gasnier June 28, 2019, 8:08 a.m. UTC 
Add support for the 3.3V booster regulator embedded in stm32h7 and stm32mp1
devices, that can be used to supply ADC analog input switches.
It's useful to reach full ADC performance when their supply is below 2.7V
(vdda by default).

Fabrice Gasnier (4):
  dt-bindings: regulator: add support for the stm32-booster
  regulator: add support for the stm32-booster
  ARM: multi_v7_defconfig: enable STM32 booster regulator
  ARM: dts: stm32: add booster for ADC analog switches on stm32mp157c

 .../bindings/regulator/st,stm32-booster.txt        |  18 +++
 arch/arm/boot/dts/stm32mp157c.dtsi                 |   6 +
 arch/arm/configs/multi_v7_defconfig                |   1 +
 drivers/regulator/Kconfig                          |  11 ++
 drivers/regulator/Makefile                         |   1 +
 drivers/regulator/stm32-booster.c                  | 132 +++++++++++++++++++++
 6 files changed, 169 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/st,stm32-booster.txt
 create mode 100644 drivers/regulator/stm32-booster.c

Comments

Mark Brown June 28, 2019, 2:32 p.m. UTC | #1 
On Fri, Jun 28, 2019 at 10:08:07AM +0200, Fabrice Gasnier wrote:
> Add support for the 3.3V booster regulator embedded in stm32h7 and stm32mp1
> devices, that can be used to supply ADC analog input switches.
> 
> This regulator is supplied by vdda. It's controlled by using SYSCFG:
> - STM32H7 has a unique register to set/clear the booster enable bit
> - STM32MP1 has separate set and clear registers to configure it.

This doesn't apply against current code, please check and resend.