linux-kernel - Re: [PATCH 1/2] pinctrl: qcom: spmi-gpio: correct parent irqspec translation

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Date:   Mon, 16 Aug 2021 14:08:11 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Linus Walleij <linus.walleij@...aro.org>, skakit@...eaurora.org
Cc:     Rob Herring <robh+dt@...nel.org>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        David Collins <collinsd@...eaurora.org>,
        Kiran Gunda <kgunda@...eaurora.org>,
        linux-gpio@...r.kernel.org,
        linux-kernel <linux-kernel@...r.kernel.org>,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 1/2] pinctrl: qcom: spmi-gpio: correct parent irqspec translation

Quoting skakit@...eaurora.org (2021-08-15 23:50:37)
> Hi Linus,
>
> On 2021-08-13 14:27, Linus Walleij wrote:
> > Hi Satya/David,
> >
> > nice work on identifying this bug!
> >
> > On Fri, Aug 13, 2021 at 6:56 AM satya priya <skakit@...eaurora.org>
> > wrote:
> >>
> >> From: David Collins <collinsd@...eaurora.org>
> >>
> >> pmic_gpio_child_to_parent_hwirq() and
> >> gpiochip_populate_parent_fwspec_fourcell() translate a pinctrl-
> >> spmi-gpio irqspec to an SPMI controller irqspec.  When they do
> >> this, they use a fixed SPMI slave ID of 0 and a fixed GPIO
> >> peripheral offset of 0xC0 (corresponding to SPMI address 0xC000).
> >> This translation results in an incorrect irqspec for secondary
> >> PMICs that don't have a slave ID of 0 as well as for PMIC chips
> >> which have GPIO peripherals located at a base address other than
> >> 0xC000.
> >>
> >> Correct this issue by passing the slave ID of the pinctrl-spmi-
> >> gpio device's parent in the SPMI controller irqspec and by
> >> calculating the peripheral ID base from the device tree 'reg'
> >> property of the pinctrl-spmi-gpio device.
> >>
> >> Signed-off-by: David Collins <collinsd@...eaurora.org>
> >> Signed-off-by: satya priya <skakit@...eaurora.org>

Can you please add an appropriate Fixes tag?

> >
> > Is this a regression or is it fine if I just apply it for v5.15?
> > I was thinking v5.15 since it isn't yet used in device trees.
> >
>
> Without this fix, [2/2] Vol+ support is failing. If possible please
> merge it on current branch.
>

Are there any boards supported upstream that have a gpio block that
isn't at 0xc000?