From: Krzysztof Kozlowski <krzk@kernel.org>
To: Alexander Stein <alexander.stein@ew.tq-group.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Frank Li <Frank.Li@nxp.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Magnus Damm <magnus.damm@gmail.com>,
Shawn Guo <shawnguo@kernel.org>
Cc: Markus Niebel <Markus.Niebel@ew.tq-group.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux@ew.tq-group.com, linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH 2/3] arm64: dts: add tqma9596la-mba95xxca
Date: Mon, 16 Mar 2026 16:52:44 +0100 [thread overview]
Message-ID: <05f294c3-ce68-4b9e-9d1d-b4bde4d5986f@kernel.org> (raw)
In-Reply-To: <20260316150535.786122-2-alexander.stein@ew.tq-group.com>
On 16/03/2026 16:04, Alexander Stein wrote:
> +
> + reg_3v3a_10g: regulator-3v3a-10g {
> + compatible = "regulator-fixed";
> + regulator-name = "3V3A_10G";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + gpio = <&expander2 15 GPIO_ACTIVE_HIGH>;
> + startup-delay-us = <2000>;
> + enable-active-high;
> + vin-supply = <®_5v0>;
> + };
> +
> + reg_5v0: regulator-5v0 {
> + compatible = "regulator-fixed";
> + regulator-name = "5V0";
> + regulator-min-microvolt = <5000000>;
> + regulator-max-microvolt = <5000000>;
> + regulator-always-on;
> + };
This is a pointless regulator, unused. Defining non-controlalble
supplies for fixed regulators brings no benefits. It has only drawbacks:
bigger DT, slower boot times. We do not define in DTS every transistor,
every non-controllable IC on the board.
Best regards,
Krzysztof
next prev parent reply other threads:[~2026-03-16 15:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-16 15:04 [PATCH 1/3] dt: bindings: arm: add bindings for TQMa95xxLA Alexander Stein
2026-03-16 15:04 ` [PATCH 2/3] arm64: dts: add tqma9596la-mba95xxca Alexander Stein
2026-03-16 15:52 ` Krzysztof Kozlowski [this message]
2026-03-16 15:04 ` [PATCH 3/3] arm64: defconfig: enable EMC2305 driver Alexander Stein
2026-03-16 15:53 ` Krzysztof Kozlowski
2026-03-17 7:48 ` [PATCH 1/3] dt: bindings: arm: add bindings for TQMa95xxLA Krzysztof Kozlowski
2026-03-25 15:49 ` (subset) " Frank Li
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