linux-kernel - [PATCH v11 4/8] arm64: dts: ti: k3-j721s2-common-proc-board: Enable SERDES0

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Date:   Fri, 24 Feb 2023 15:54:34 +0530
From:   Ravi Gunasekaran <r-gunasekaran@...com>
To:     <nm@...com>, <afd@...com>, <vigneshr@...com>, <kristo@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <s-vadapalli@...com>, <vaishnav.a@...com>, <r-gunasekaran@...com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v11 4/8] arm64: dts: ti: k3-j721s2-common-proc-board: Enable SERDES0

From: Aswath Govindraju <a-govindraju@...com>

Configure first lane to PCIe, the second lane to USB and the last two lanes
to eDP. Also, add sub-nodes to SERDES0 DT node to represent SERDES0 is
connected to PCIe.

Signed-off-by: Aswath Govindraju <a-govindraju@...com>
Signed-off-by: Matt Ranostay <mranostay@...com>
Signed-off-by: Ravi Gunasekaran <r-gunasekaran@...com>
---
I had reviewed this patch in the v5 series [0].
Since I'm taking over upstreaming this series, I removed the self
Reviewed-by tag.

[0] - https://lore.kernel.org/all/71ce4ecd-2a50-c69d-28be-f1a8d769970e@ti.com/

Changes from v10:
* Removed Link tag from commit message

Changes from v9:
* Enabled serdes related nodes

Changes from v8:
* No change

Changes from v7:
* No change

Changes from v6:
* No change

Changes from v5:
* Removed Cc tags from commit message

Changes from v4:
* No change

Changes from v3:
* No change

Changes from v2:
* No change

Changes from v1:
* No change

 .../dts/ti/k3-j721s2-common-proc-board.dts    | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
index a7aa6cf08acd..907f34ff22a5 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
@@ -9,6 +9,9 @@
 
 #include "k3-j721s2-som-p0.dtsi"
 #include <dt-bindings/net/ti-dp83867.h>
+#include <dt-bindings/phy/phy-cadence.h>
+#include <dt-bindings/phy/phy.h>
+#include <dt-bindings/mux/ti-serdes.h>
 
 / {
 	compatible = "ti,j721s2-evm", "ti,j721s2";
@@ -296,6 +299,30 @@
 	phy-handle = <&phy0>;
 };
 
+&serdes_ln_ctrl {
+	idle-states = <J721S2_SERDES0_LANE0_PCIE1_LANE0>, <J721S2_SERDES0_LANE1_USB>,
+		      <J721S2_SERDES0_LANE2_EDP_LANE2>, <J721S2_SERDES0_LANE3_EDP_LANE3>;
+};
+
+&serdes_refclk {
+	clock-frequency = <100000000>;
+};
+
+&serdes_wiz0 {
+	status = "okay";
+};
+
+&serdes0 {
+	status = "okay";
+	serdes0_pcie_link: phy@0 {
+		reg = <0>;
+		cdns,num-lanes = <1>;
+		#phy-cells = <0>;
+		cdns,phy-type = <PHY_TYPE_PCIE>;
+		resets = <&serdes_wiz0 1>;
+	};
+};
+
 &mcu_mcan0 {
 	status = "okay";
 	pinctrl-names = "default";
-- 
2.17.1