linux-kernel - Re: [PATCH v4 1/6] dt-bindings: gpio-mmio: Add opencores GPIO

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Message-ID: <aWZzZWTjctHasCHh@antec>
Date: Tue, 13 Jan 2026 16:31:33 +0000
From: Stafford Horne <shorne@...il.com>
To: Bartosz Golaszewski <brgl@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
	Linux OpenRISC <linux-openrisc@...r.kernel.org>,
	devicetree <devicetree@...r.kernel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Linus Walleij <linusw@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	linux-gpio@...r.kernel.org
Subject: Re: [PATCH v4 1/6] dt-bindings: gpio-mmio: Add opencores GPIO

On Tue, Jan 13, 2026 at 05:20:28PM +0100, Bartosz Golaszewski wrote:
> On Tue, Jan 13, 2026 at 5:15 PM Stafford Horne <shorne@...il.com> wrote:
> >
> > Add a device tree binding for the opencores GPIO controller.
> >
> > On FPGA Development boards with GPIOs the OpenRISC architecture uses the
> > opencores gpio verilog rtl which is compatible with the MMIO GPIO driver.
> >
> > Link: https://opencores.org/projects/gpio
> > Signed-off-by: Stafford Horne <shorne@...il.com>
> > Reviewed-by: Linus Walleij <linusw@...nel.org>
> > Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
> > ---
> > Since v3:
> >  - Removed example.
> >  - Re-order this patch to be before adding compatible string to driver as per
> >    device tree binding patch rules.
> >  - Add Reviewed-by's.
> > Since v2:
> >  - Fixup (replace) patch to simply add opencores,gpio and add an example.
> >    (It was incorrect to specifying opencores,gpio with brcm,bcm6345-gpio
> >     as opencores,gpio is not the same hardware, its 8-bit vs 32-bit)
> > Since v1:
> >  - Fix schema to actually match the example.
> >
> >  Documentation/devicetree/bindings/gpio/gpio-mmio.yaml | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml b/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml
> > index ee5d5d25ae82..a8823ca65e78 100644
> > --- a/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml
> > +++ b/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml
> > @@ -23,6 +23,7 @@ properties:
> >        - ni,169445-nand-gpio
> >        - wd,mbl-gpio # Western Digital MyBook Live memory-mapped GPIO controller
> >        - intel,ixp4xx-expansion-bus-mmio-gpio
> > +      - opencores,gpio
> >
> >    big-endian: true
> >
> > --
> > 2.51.0
> >
> 
> This is not a follow-up patch. Please rebase your fix on top of
> linux-next. I already have the previous patch in my tree and will not
> be rebasing the entire for-next branch.

OK, understood, I wasn't aware you would not rebase. I will rework this rebasing
on linux-next reberting my previous dt-binding: patch first.

Thanks for the clarification.

-Stafford