linux-kernel - [RFC PATCH 2/2] arm64: dts: rockchip: drop PCIe 3v3 always-on and boot-on

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Message-ID: <aEAQMHAQU3VgTghK@geday>
Date: Wed, 4 Jun 2025 06:21:52 -0300
From: Geraldo Nascimento <geraldogabriel@...il.com>
To: linux-rockchip@...ts.infradead.org
Cc: Hugh Cole-Baker <sigmaris@...il.com>,
	Christian Hewitt <christianshewitt@...il.com>,
	Shawn Lin <shawn.lin@...k-chips.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Heiko Stuebner <heiko@...ech.de>, linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH 2/2] arm64: dts: rockchip: drop PCIe 3v3 always-on and
 boot-on

Example commit of needed dropping of regulator always-on/boot-on
declarations to make sure quirky devices known to not be working
on RK3399 are able to enumerate on second try without
assertion/deassertion of PERST# in-band PCIe reset signal.

One example only, to avoid patch-bomb.

---
 arch/arm64/boot/dts/rockchip/rk3399pro-vmarc-som.dtsi | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399pro-vmarc-som.dtsi b/arch/arm64/boot/dts/rockchip/rk3399pro-vmarc-som.dtsi
index 8ce7cee92af0..d31fd3d34cda 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399pro-vmarc-som.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399pro-vmarc-som.dtsi
@@ -25,8 +25,6 @@ vcc3v3_pcie: regulator-vcc-pcie {
 		pinctrl-names = "default";
 		pinctrl-0 = <&pcie_pwr>;
 		regulator-name = "vcc3v3_pcie";
-		regulator-always-on;
-		regulator-boot-on;
 		vin-supply = <&vcc5v0_sys>;
 	};
 
-- 
2.49.0