On Tue, Mar 07, 2023 at 02:41:16PM +0100, Linus Walleij wrote: > On Mon, Mar 6, 2023 at 10:00 AM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote: > > > Add a simple sysfs interface to the generic pinctrl framework > > for configuring pins for output disable operation. > > > > /sys/class/pinctrl/ > > `-- output-disable/ > > |-- configure (w/o) ask the kernel to configure a pin group > > for output disable operation. > > > > echo "<group-name function-name 0 1>" > configure > > > > The existing "pinmux-functions" debugfs file lists the pin functions > > registered for the pin controller. For example: > > > > function 0: usb0, groups = [ usb0 ] > > function 1: usb1, groups = [ usb1 ] > > function 2: gpt4-pins, groups = [ gpt4-pins ] > > function 3: scif0, groups = [ scif0 ] > > function 4: scif2, groups = [ scif2 ] > > function 5: spi1, groups = [ spi1 ] > > > > To configure gpt4-pins for output disable activation by user: > > > > echo "gpt4-pins gpt4-pins 0 1" > configure That is not what sysfs is for (multiple values per file.) Why not use configfs for this as that is exactly what this is designed for? thanks, greg k-h
