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Date: Wed, 21 Feb 2024 19:39:08 +0000
From: Conor Dooley <conor@kernel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Alex Soo <yuklin.soo@starfivetech.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Bartosz Golaszewski <bartosz.golaszewski@linaro.org>,
	Hal Feng <hal.feng@starfivetech.com>,
	Ley Foon Tan <leyfoon.tan@starfivetech.com>,
	Jianlong Huang <jianlong.huang@starfivetech.com>,
	Emil Renner Berthing <kernel@esmil.dk>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Drew Fustini <drew@beagleboard.org>, linux-gpio@vger.kernel.org,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	linux-riscv@lists.infradead.org,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>
Subject: Re: [RFC PATCH v2 1/6] dt-bindings: pinctrl: starfive: Add JH8100
 pinctrl
Message-ID: <20240221-overstep-degrading-f0aec67f1221@spud>
References: <20240220064246.467216-1-yuklin.soo@starfivetech.com>
 <20240220064246.467216-2-yuklin.soo@starfivetech.com>
 <1a11cee2-2ef1-4ce0-8cc1-63c6cc97863f@linaro.org>
 <20240220-bottling-reverence-e0ee08f48ccc@spud>
 <cafccf8d-b8f7-44cb-bc41-3c7a908fd1e4@linaro.org>
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On Wed, Feb 21, 2024 at 08:24:26AM +0100, Krzysztof Kozlowski wrote:
> On 20/02/2024 20:10, Conor Dooley wrote:
> > On Tue, Feb 20, 2024 at 09:11:43AM +0100, Krzysztof Kozlowski wrote:
> >> On 20/02/2024 07:42, Alex Soo wrote:
> >>> Add documentation and header file for JH8100 pinctrl driver.
> >>>
> >>> Signed-off-by: Alex Soo <yuklin.soo@starfivetech.com>
> >>> ---
> >>
> >>
> >> RFC? Why isn't this patch ready for review?
> >=20
> > The TL;DR is that Emil and I didn't want to apply the dts patches to
> > support a platform that hadn't actually been taped out yet.=20
> > For an SoC in that state, at least the bindings for, clock and pinctrl
> > could be subject to changes before tapeou. I think putting RFC on those
> > patches is a good idea, but of course the rationale should be mentioned.
>=20
> That would be useful information. We also could mark some bindings
> unstable and accept breaking ABI under certain conditions, like that it
> is early work without users for long time.

I don't want to discourage a vendor that's clearly doing a good job of
working on things before they've even taped things out, which is why I
suggested sending clocks/pinctrl as RFC until things are finalised.
I'm not sure what a good way to mention this in the bindings would be,
particularly for clock/pinctrl definitions where things could change
"behind the back" of a user - I'm thinking things like U-Boot here.

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