Re: [PATCH v1 01/10] pinctrl: intel: Disable input and output buffer when switching to GPIO

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Jun 10, 2020 at 09:35:34PM +0300, Andy Shevchenko wrote:
> It's possible scenario that pin has been in different mode, while
> the respective GPIO register has a leftover output buffer enabled.
> In such case when we request GPIO it will switch to GPIO mode, and
> thus to output with unknown value, followed by switching to input
> mode. This can produce a glitch on the pin.
> 
> Disable input and output buffer when switching to GPIO to avoid
> potential glitches.

I'll send v2 soon with additional patches.

Also I move patch "Split intel_config_get() to three functions" closer to the
end where is seems more logical (continuation of which is IO protection).

-- 
With Best Regards,
Andy Shevchenko





[Index of Archives]     [Linux SPI]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux