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Sun, 2 Aug 2020 11:53:59 -0500 Received: from DLEE104.ent.ti.com (157.170.170.34) by DLEE100.ent.ti.com (157.170.170.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Sun, 2 Aug 2020 11:53:58 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DLEE104.ent.ti.com (157.170.170.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Sun, 2 Aug 2020 11:53:58 -0500 Received: from pxplinux063.india.englab.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 072GruZj116981; Sun, 2 Aug 2020 11:53:57 -0500 From: Sekhar Nori To: Tero Kristo , Nishanth Menon Subject: [PATCH] arm64: dts: ti: k3-am65: restrict PCIe to Gen2 speed Date: Sun, 2 Aug 2020 22:23:56 +0530 Message-ID: <20200802165356.10285-1-nsekhar@ti.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200802_125400_917534_5AE9D894 X-CRM114-Status: GOOD ( 11.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Linux ARM Mailing List , Kishon Vijay Abraham I Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Per errata i2104 documented in AM65x device errata document (TI document number SPRZ452E, revised June 2019), Gen3 operation is not supported for both PCIe Root Complex and Endpoint modes of operation. See: https://www.ti.com/lit/er/sprz452e/sprz452e.pdf Restrict speed to Gen2 to address the errata. Signed-off-by: Sekhar Nori --- arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi index 61815228e230..22712d503290 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi @@ -650,7 +650,7 @@ ti,syscon-pcie-mode = <&pcie0_mode>; bus-range = <0x0 0xff>; num-viewport = <16>; - max-link-speed = <3>; + max-link-speed = <2>; dma-coherent; interrupts = ; msi-map = <0x0 &gic_its 0x0 0x10000>; @@ -664,7 +664,7 @@ ti,syscon-pcie-mode = <&pcie0_mode>; num-ib-windows = <16>; num-ob-windows = <16>; - max-link-speed = <3>; + max-link-speed = <2>; dma-coherent; interrupts = ; }; @@ -682,7 +682,7 @@ ti,syscon-pcie-mode = <&pcie1_mode>; bus-range = <0x0 0xff>; num-viewport = <16>; - max-link-speed = <3>; + max-link-speed = <2>; dma-coherent; interrupts = ; msi-map = <0x0 &gic_its 0x10000 0x10000>; @@ -696,7 +696,7 @@ ti,syscon-pcie-mode = <&pcie1_mode>; num-ib-windows = <16>; num-ob-windows = <16>; - max-link-speed = <3>; + max-link-speed = <2>; dma-coherent; interrupts = ; }; -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel