linux-kernel - Re: [PATCH 4.12 55/65] pinctrl: sunxi: add a missing function of A10/A20 pinctrl driver

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Message-ID: <20170822155115.GC10872@kroah.com>
Date:   Tue, 22 Aug 2017 08:51:15 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Ben Hutchings <ben@...adent.org.uk>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        stable@...r.kernel.org, Icenowy Zheng <icenowy@...c.io>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH 4.12 55/65] pinctrl: sunxi: add a missing function of
 A10/A20 pinctrl driver

On Tue, Aug 22, 2017 at 05:11:30PM +0800, Chen-Yu Tsai wrote:
> On Sat, Aug 19, 2017 at 4:07 AM, Ben Hutchings <ben@...adent.org.uk> wrote:
> > On Mon, 2017-08-14 at 18:19 -0700, Greg Kroah-Hartman wrote:
> >> 4.12-stable review patch.  If anyone has any objections, please let me know.
> >>
> >> ------------------
> >>
> >> From: Icenowy Zheng <icenowy@...c.io>
> >>
> >> commit d81ece747d8727bb8b1cfc9a20dbe62f09a4e35a upstream.
> >>
> >> The PH16 pin has a function with mux id 0x5, which is the DET pin of the
> >> "sim" (smart card reader) IP block.
> >>
> >> This function is missing in old versions of A10/A20 SoCs' datasheets and
> >> user manuals, so it's also missing in the old drivers. The newest A10
> >> Datasheet V1.70 and A20 Datasheet V1.41 contain this pin function, and
> >> it's discovered during implementing R40 pinctrl driver.
> >>
> >> Add it to the driver. As we now merged A20 pinctrl driver to the A10
> >> one, we need to only fix the A10 driver now.
> >
> > That happened after 4.12, so I think for stable the same change should
> > be applied in drivers/pinctrl/sunxi/pinctrl-sun7i-a20.c.
> 
> Indeed. Should we send a backported patch?

Yes, please do.

thanks,

greg k-h