linux-kernel - Re: [PATCH 0/3] qcom: spmi: add support for hierarchical IRQ chip

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Date:   Sun, 30 Dec 2018 21:11:29 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Brian Masney <masneyb@...tation.org>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <andy.gross@...aro.org>,
        Marc Zyngier <marc.zyngier@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        Doug Anderson <dianders@...omium.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Nicolas Dechesne <nicolas.dechesne@...aro.org>,
        Niklas Cassel <niklas.cassel@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "thierry.reding@...il.com" <thierry.reding@...il.com>,
        linux-arm-msm@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH 0/3] qcom: spmi: add support for hierarchical IRQ chip

On Sat, Dec 29, 2018 at 12:48 PM Brian Masney <masneyb@...tation.org> wrote:

> This patch series adds hierarchical IRQ chip support to spmi-gpio so
> that device tree consumers can request an IRQ directly from the GPIO
> block rather than having to request an IRQ from the underlying PMIC.
> The first patch in this series converts pmic-arb to use the version 2
> IRQ interface and patches 2 and 3 add support for the hierarchical
> IRQ chip to spmi-gpio.

Very nice stuff!

> The patches need to be applied in the order that I have them in order
> to allow for a proper bisection, however part of the series can be
> applied without any breakage. Maybe the spmi-arb change can go in
> for v4.21 and the spmi-gpio changes can go in for v4.22?

I'm fairly sure the SPMI maintainer (Stephen Boyd) can just ACK the
patch once he's happy with it and I can then apply it all to
the pin control tree.

> This work was tested on a LG Nexus 5 (hammerhead) phone. My status page
> at https://masneyb.github.io/nexus-5-upstream/ describes what is working
> so far with an upstream kernel.

I'm a big fan of your work. I have a few of these devices as well,
so the day I manage to create a serial cable for it, I'll gladly test
this stuff and see what I can add.

Yours,
Linus Walleij