[lkml]   [2019]   [Dec]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v6 13/15] gpio: bd71828: Initial support for ROHM BD71828 PMIC GPIOs
On Wed, Dec 11, 2019 at 10:49 AM Matti Vaittinen
<> wrote:

> ROHM BD71828 PMIC contains 4 pins which can be configured by OTP
> to be used for general purposes. First 3 can be used as outputs
> and pin can be used as input. Allow them to be controlled
> via GPIO framework.
> The driver assumes all of the pins are configured as GPIOs and
> trusts that the reserved pins in other OTP configurations are
> excluded from control using "gpio-reserved-ranges" device tree
> property (or left untouched by GPIO users).
> Typical use for pin (input) is to use it as HALL sensor
> input so that this pin state is toggled when HALL sensor detects
> LID position change (from close to open or open to close). PMIC
> HW implements some extra logic which allows PMIC to power-up the
> system when this pin is toggled. Please see the data sheet for
> details of GPIO options which can be selected by OTP settings.
> Signed-off-by: Matti Vaittinen <>
> Reviewed-by: Bartosz Golaszewski <>

Reviewed-by: Linus Walleij <>

Linus Walleij

 \ /
  Last update: 2019-12-16 09:33    [W:0.269 / U:0.076 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site