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From:   Kishon Vijay Abraham I <kishon@ti.com>
To:     Nishanth Menon <nm@ti.com>, Tero Kristo <kristo@kernel.org>,
        Rob Herring <robh+dt@kernel.org>
CC:     <linux-arm-kernel@lists.infradead.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        Kishon Vijay Abraham I <kishon@ti.com>,
        Lokesh Vutla <lokeshvutla@ti.com>, <a-govindraju@ti.com>
Subject: [PATCH v4 3/5] arm64: dts: ti: k3-am642-evm: Enable PCIe and SERDES
Date:   Thu, 3 Jun 2021 19:52:49 +0530
Message-ID: <20210603142251.14563-4-kishon@ti.com>
In-Reply-To: <20210603142251.14563-1-kishon@ti.com>
References: <20210603142251.14563-1-kishon@ti.com>
MIME-Version: 1.0
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Precedence: bulk

AM642 EVM has a x4 lane PCIe connector. Enable PCIe in RC mode here.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am642-evm.dts | 30 +++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index dad0efa961ed..8c27f563a390 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -5,6 +5,8 @@
 
 /dts-v1/;
 
+#include <dt-bindings/phy/phy.h>
+#include <dt-bindings/mux/ti-serdes.h>
 #include <dt-bindings/leds/common.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/net/ti-dp83867.h>
@@ -466,3 +468,31 @@
 &mailbox0_cluster7 {
 	status = "disabled";
 };
+
+&serdes_ln_ctrl {
+	idle-states = <AM64_SERDES0_LANE0_PCIE0>;
+};
+
+&serdes0 {
+	serdes0_pcie_link: phy@0 {
+		reg = <0>;
+		cdns,num-lanes = <1>;
+		#phy-cells = <0>;
+		cdns,phy-type = <PHY_TYPE_PCIE>;
+		resets = <&serdes_wiz0 1>;
+	};
+};
+
+&pcie0_rc {
+	reset-gpios = <&exp1 5 GPIO_ACTIVE_HIGH>;
+	phys = <&serdes0_pcie_link>;
+	phy-names = "pcie-phy";
+	num-lanes = <1>;
+};
+
+&pcie0_ep {
+	phys = <&serdes0_pcie_link>;
+	phy-names = "pcie-phy";
+	num-lanes = <1>;
+	status = "disabled";
+};
-- 
2.17.1