Messages in this thread | | | From | Linus Walleij <> | Date | Tue, 30 Oct 2018 13:08:14 +0100 | Subject | Re: [PATCH 2/2] pinctrl: pinctrl-npcm7xx: Set BGPIOF_VOLATILE_REG |
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On Wed, Oct 17, 2018 at 11:30 PM Kun Yi <kunyi@google.com> wrote:
> Indicate that the pins are both controlled by the pinctrl driver and the > generic GPIO driver, thus GPIO driver should read the register value > before updating, instead of using the stored shadow register values. > > Signed-off-by: Kun Yi <kunyi@google.com>
This is quite a rough measure, if we instead use regmap-mmio we can exercise fine control over what register are volatile and not instead of saying that all of them or some of them are.
Yours, Linus Walleij
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