linux-kernel - [PATCH 2/8] dts: espressobin: Define max-link-speed for pcie0

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Date:   Wed, 15 Apr 2020 18:00:48 +0200
From:   Pali Rohár <pali@...nel.org>
To:     Jason Cooper <jason@...edaemon.net>, Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Andrew Murray <amurray@...goodpenguin.co.uk>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Remi Pommarel <repk@...plefau.lt>,
        Marek Behún <marek.behun@....cz>,
        Tomasz Maciej Nowak <tmn505@...il.com>,
        Xogium <contact@...ium.me>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org
Subject: [PATCH 2/8] dts: espressobin: Define max-link-speed for pcie0

Previously aardvark PCI controller set speed to gen2. Now it reads speed
from Device Tree and as default use maximal possible speed which is gen3.

Because Espressobin has advertised only PCI Express 2.0 capability and
previous value was gen2, define max-link-speed to 2, so there would not be
any configuration change.

Signed-off-by: Pali Rohár <pali@...nel.org>
---
 arch/arm64/boot/dts/marvell/armada-3720-espressobin.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dtsi b/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dtsi
index 42e992f9c8a5..6705618162d5 100644
--- a/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dtsi
@@ -47,6 +47,7 @@
 	phys = <&comphy1 0>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pcie_reset_pins &pcie_clkreq_pins>;
+	max-link-speed = <2>;
 };
 
 /* J6 */
-- 
2.20.1