On 07/01/2020 10:39, Arnd Bergmann wrote:
On Tue, Jan 7, 2020 at 10:45 AM Linus Walleij <linus.walleij@xxxxxxxxxx> wrote:
On Wed, Dec 18, 2019 at 5:37 PM Arnd Bergmann <arnd@xxxxxxxx> wrote:
I wonder if GPIOLIB should just become mandatory when enabling the pinctrl
subsystem, or if there are still good reasons for leaving it disabled
on any machine that uses CONFIG_PINCTRL.
Hm that is a tricky question, they almost always come in pair but are
technically speaking separate subsystems.
I think there are a number of use cases for GPIOLIB drivers without PINCTRL, but
are there any examples of the reverse?
Arnd
You could have muxable pins that aren't gpios. For example muxing
between i2c/spi signals. So a pinctrl driver doesn't imply gpio.
