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Message-Id: <20210916155811.574166844@linuxfoundation.org>
Date:   Thu, 16 Sep 2021 17:59:37 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Vidya Sagar <vidyas@...dia.com>,
        Jon Hunter <jonathanh@...dia.com>,
        Thierry Reding <treding@...dia.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.13 220/380] arm64: tegra: Fix Tegra194 PCIe EP compatible string

From: Vidya Sagar <vidyas@...dia.com>

[ Upstream commit bf2942a8b7c38e8cc2d5157b4f0323d7f4e5ec71 ]

The initialization sequence performed by the generic platform driver
pcie-designware-plat.c for a DWC based implementation doesn't work for
Tegra194. Tegra194 has a different initialization sequence requirement
which can only be satisfied by the Tegra194 specific platform driver
pcie-tegra194.c. So, remove the generic compatible string "snps,dw-pcie-ep"
from Tegra194's endpoint controller nodes.

Signed-off-by: Vidya Sagar <vidyas@...dia.com>
Reviewed-by: Jon Hunter <jonathanh@...dia.com>
Signed-off-by: Thierry Reding <treding@...dia.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/boot/dts/nvidia/tegra194.dtsi | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index 2e40b6047283..203318aa660f 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -2005,7 +2005,7 @@ pcie@...a0000 {
 	};
 
 	pcie_ep@...60000 {
-		compatible = "nvidia,tegra194-pcie-ep", "snps,dw-pcie-ep";
+		compatible = "nvidia,tegra194-pcie-ep";
 		power-domains = <&bpmp TEGRA194_POWER_DOMAIN_PCIEX4A>;
 		reg = <0x00 0x14160000 0x0 0x00020000>, /* appl registers (128K)      */
 		      <0x00 0x36040000 0x0 0x00040000>, /* iATU_DMA reg space (256K)  */
@@ -2037,7 +2037,7 @@ pcie_ep@...60000 {
 	};
 
 	pcie_ep@...80000 {
-		compatible = "nvidia,tegra194-pcie-ep", "snps,dw-pcie-ep";
+		compatible = "nvidia,tegra194-pcie-ep";
 		power-domains = <&bpmp TEGRA194_POWER_DOMAIN_PCIEX8B>;
 		reg = <0x00 0x14180000 0x0 0x00020000>, /* appl registers (128K)      */
 		      <0x00 0x38040000 0x0 0x00040000>, /* iATU_DMA reg space (256K)  */
@@ -2069,7 +2069,7 @@ pcie_ep@...80000 {
 	};
 
 	pcie_ep@...a0000 {
-		compatible = "nvidia,tegra194-pcie-ep", "snps,dw-pcie-ep";
+		compatible = "nvidia,tegra194-pcie-ep";
 		power-domains = <&bpmp TEGRA194_POWER_DOMAIN_PCIEX8A>;
 		reg = <0x00 0x141a0000 0x0 0x00020000>, /* appl registers (128K)      */
 		      <0x00 0x3a040000 0x0 0x00040000>, /* iATU_DMA reg space (256K)  */
-- 
2.30.2



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