linux-kernel - [PATCH 3/3] arm64: dts: rockchip: drop max-link-speed = <2> in helios64 PCIe

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Message-ID: <53332edec449b84d8a962f2b5995667766359772.1763197368.git.geraldogabriel@gmail.com>
Date: Sat, 15 Nov 2025 06:10:58 -0300
From: Geraldo Nascimento <geraldogabriel@...il.com>
To: linux-rockchip@...ts.infradead.org
Cc: Shawn Lin <shawn.lin@...k-chips.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Manivannan Sadhasivam <mani@...nel.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,
	devicetree@...r.kernel.org,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Johan Jonker <jbx6244@...il.com>,
	Geraldo Nascimento <geraldogabriel@...il.com>,
	Dragan Simic <dsimic@...jaro.org>
Subject: [PATCH 3/3] arm64: dts: rockchip: drop max-link-speed = <2> in
 helios64 PCIe

Shawn Lin from Rockchip strongly discourages attempts to use their
RK3399 PCIe core at 5.0 GT/s speed, citing concerns about catastrophic
failures that may happen. Even if the odds are low, drop from last user
of this property for the RK3399 platform, helios64.

Fixes: 755fff528b1b ("arm64: dts: rockchip: add variables for pcie completion to helios64")
Link: https://lore.kernel.org/all/ffd05070-9879-4468-94e3-b88968b4c21b@rock-chips.com/
Reported-by: Shawn Lin <shawn.lin@...k-chips.com>
Signed-off-by: Geraldo Nascimento <geraldogabriel@...il.com>
---
 arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts b/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts
index e7d4a2f9a95e..78a7775c3b22 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts
@@ -424,7 +424,6 @@ &pcie_phy {
 
 &pcie0 {
 	ep-gpios = <&gpio2 RK_PD4 GPIO_ACTIVE_HIGH>;
-	max-link-speed = <2>;
 	num-lanes = <2>;
 	pinctrl-names = "default";
 	status = "okay";
-- 
2.49.0