linux-kernel - [PATCH AUTOSEL 4.19 01/14] arm64: dts: rockchip: Fix PCIe DT properties on rk3399

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Message-Id: <20210208175926.2092211-1-sashal@kernel.org>
Date:   Mon,  8 Feb 2021 12:59:13 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Marc Zyngier <maz@...nel.org>, Heiko Stuebner <heiko@...ech.de>,
        Sasha Levin <sashal@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org
Subject: [PATCH AUTOSEL 4.19 01/14] arm64: dts: rockchip: Fix PCIe DT properties on rk3399

From: Marc Zyngier <maz@...nel.org>

[ Upstream commit 43f20b1c6140896916f4e91aacc166830a7ba849 ]

It recently became apparent that the lack of a 'device_type = "pci"'
in the PCIe root complex node for rk3399 is a violation of the PCI
binding, as documented in IEEE Std 1275-1994. Changes to the kernel's
parsing of the DT made such violation fatal, as drivers cannot
probe the controller anymore.

Add the missing property makes the PCIe node compliant. While we
are at it, drop the pointless linux,pci-domain property, which only
makes sense when there are multiple host bridges.

Signed-off-by: Marc Zyngier <maz@...nel.org>
Link: https://lore.kernel.org/r/20200815125112.462652-3-maz@kernel.org
Signed-off-by: Heiko Stuebner <heiko@...ech.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/boot/dts/rockchip/rk3399.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index f4ee7c4f83b8b..b1c1a88a1c20c 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -198,6 +198,7 @@ pcie0: pcie@...00000 {
 		reg = <0x0 0xf8000000 0x0 0x2000000>,
 		      <0x0 0xfd000000 0x0 0x1000000>;
 		reg-names = "axi-base", "apb-base";
+		device_type = "pci";
 		#address-cells = <3>;
 		#size-cells = <2>;
 		#interrupt-cells = <1>;
@@ -216,7 +217,6 @@ pcie0: pcie@...00000 {
 				<0 0 0 2 &pcie0_intc 1>,
 				<0 0 0 3 &pcie0_intc 2>,
 				<0 0 0 4 &pcie0_intc 3>;
-		linux,pci-domain = <0>;
 		max-link-speed = <1>;
 		msi-map = <0x0 &its 0x0 0x1000>;
 		phys = <&pcie_phy 0>, <&pcie_phy 1>,
-- 
2.27.0