linux-kernel - Re: [PATCH 3/8] pinctrl: msm: Add ability for drivers to supply a reserved GPIO list

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Message-ID: <20190610075730.GH4797@dell>
Date:   Mon, 10 Jun 2019 08:57:30 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Linus Walleij <linus.walleij@...aro.org>, alokc@...eaurora.org,
        Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Felipe Balbi <balbi@...nel.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        jlhugo@...il.com, linux-i2c@...r.kernel.org,
        MSM <linux-arm-msm@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH 3/8] pinctrl: msm: Add ability for drivers to supply a
 reserved GPIO list

On Fri, 07 Jun 2019, Bjorn Andersson wrote:

> On Fri 07 Jun 16:02 PDT 2019, Linus Walleij wrote:
> 
> > On Wed, Jun 5, 2019 at 1:43 PM Lee Jones <lee.jones@...aro.org> wrote:
> > 
> > > When booting MSM based platforms with Device Tree or some ACPI
> > > implementations, it is possible to provide a list of reserved pins
> > > via the 'gpio-reserved-ranges' and 'gpios' properties respectively.
> > > However some ACPI tables are not populated with this information,
> > > thus it has to come from a knowledgable device driver instead.
> > >
> > > Here we provide the MSM common driver with additional support to
> > > parse this informtion and correctly populate the widely used
> > > 'valid_mask'.
> > >
> > > Signed-off-by: Lee Jones <lee.jones@...aro.org>
> > 
> > Exactly how we should use of the API, so if Björn can supply an
> > ACK to patches 3 and 4 I'm happy to apply them.
> > 
> > Björn?
> > 
> 
> I'm waiting for a version that does not specify the reserved_gpios for
> struct msm_pinctrl_soc_data sdm845_pinctrl {}, as this would override
> the ability of getting these from DT.
> 
> I haven't seen such revision yet, will review it once I find it.

Just testing it now.  It should be on the list by the time you start.

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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