From: Linus Walleij <linus.walleij@linaro.org>
To: Samuel Holland <samuel@sholland.org>
Cc: Chen-Yu Tsai <wens@csie.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Andre Przywara <andre.przywara@arm.com>,
Maxime Ripard <mripard@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-sunxi@lists.linux.dev
Subject: Re: [PATCH 0/3] pinctrl: sunxi: Remove non-existent reset line references
Date: Wed, 15 Jun 2022 15:26:36 +0200 [thread overview]
Message-ID: <CACRpkdas0MEu5ShkdJr-5rrM2i5LkrwARmC6J=X_UQGkRrc7EA@mail.gmail.com> (raw)
In-Reply-To: <20220531053623.43851-1-samuel@sholland.org>
On Tue, May 31, 2022 at 7:36 AM Samuel Holland <samuel@sholland.org> wrote:
> I assume these properties came from a lack of documentation, and the
> very reasonable assumption that where there's a clock gate bit in the
> CCU, there's a reset bit. But the pin controllers are special and don't
> have a module reset line. The only way to reset the pin controller is to
> reset the whole VDD_SYS power domain.
>
> This series is preparation for converting the PRCM MFD and legacy clock
> drivers to a CCU clock/reset driver like all of the other Allwinner
> SoCs. I don't plan to add reset lines that don't actually exist to the
> new CCU driver. So we might as well get rid of the references now.
> Technically this breaks devicetree compatibility, since the old drivers
> expect the reset. But the CCU conversion will be a compatibility break
> anyway, so it's a bit of a moot point.
>
>
> Samuel Holland (3):
> pinctrl: sunxi: Remove reset controller consumers
> ARM: dts: sunxi: Drop resets from r_pio nodes
> dt-bindings: pinctrl: sunxi: Disallow the resets property
Patches applied for v5.20!
Yours,
Linus Walleij
prev parent reply other threads:[~2022-06-15 13:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-31 5:36 [PATCH 0/3] pinctrl: sunxi: Remove non-existent reset line references Samuel Holland
2022-05-31 5:36 ` [PATCH 1/3] pinctrl: sunxi: Remove reset controller consumers Samuel Holland
2022-05-31 5:36 ` [PATCH 2/3] ARM: dts: sunxi: Drop resets from r_pio nodes Samuel Holland
2022-05-31 5:36 ` [PATCH 3/3] dt-bindings: pinctrl: sunxi: Disallow the resets property Samuel Holland
2022-06-05 21:25 ` Rob Herring
2022-05-31 15:22 ` [PATCH 0/3] pinctrl: sunxi: Remove non-existent reset line references Jernej Škrabec
2022-06-01 4:42 ` Samuel Holland
2022-06-01 15:24 ` Jernej Škrabec
2022-06-15 13:26 ` Linus Walleij [this message]
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