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From: Marc Zyngier <maz@kernel.org>
To: linux-pci@vger.kernel.org, linux-rockchip@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: Rob Herring <robh@kernel.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Heiko Stuebner <heiko@sntech.de>,
	Shawn Lin <shawn.lin@rock-chips.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	kernel-team@android.com
Subject: [PATCH 2/2] arm64: dts: rockchip: Fix PCIe DT properties
Date: Sat, 15 Aug 2020 13:51:12 +0100
Message-ID: <20200815125112.462652-3-maz@kernel.org> (raw)
In-Reply-To: <20200815125112.462652-1-maz@kernel.org>

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@kernel.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 ada724b12f01..a80fc4d563b5 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -231,6 +231,7 @@ pcie0: pcie@f8000000 {
 		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>;
@@ -249,7 +250,6 @@ pcie0: pcie@f8000000 {
 				<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


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Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-15 12:51 [PATCH 0/2] PCI: rockchip: Fix PCIe probing in 5.9 Marc Zyngier
2020-08-15 12:51 ` [PATCH 1/2] PCI: rockchip: Work around missing device_type property in DT Marc Zyngier
2020-08-15 23:22   ` Bjorn Helgaas
2020-08-16 10:39     ` Marc Zyngier
2020-08-17 16:12       ` Rob Herring
2020-08-18  7:35         ` Marc Zyngier
2020-08-18 14:23           ` Rob Herring
2020-08-18 17:34             ` Marc Zyngier
2020-08-18 17:48               ` Saravana Kannan
2020-08-18 19:02                 ` Marc Zyngier
2020-08-18 19:06                   ` Rob Herring
2020-08-15 12:51 ` Marc Zyngier [this message]
2021-01-09 15:39 ` (subset) [PATCH 0/2] PCI: rockchip: Fix PCIe probing in 5.9 Heiko Stuebner

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