linux-kernel - [PATCH 5/6] arm64: dts: ti: k3-j7200-common-proc-board: Configure the SERDES lane function

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Message-ID: <20200907103810.9870-6-rogerq@ti.com>
Date:   Mon, 7 Sep 2020 13:38:09 +0300
From:   Roger Quadros <rogerq@...com>
To:     <t-kristo@...com>, <nm@...com>
CC:     <robh+dt@...nel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <nsekhar@...com>,
        <kishon@...com>, Roger Quadros <rogerq@...com>
Subject: [PATCH 5/6] arm64: dts: ti: k3-j7200-common-proc-board: Configure the SERDES lane function

From: Kishon Vijay Abraham I <kishon@...com>

First two lanes of SERDES is connected to PCIe, third lane is connected
to QSGMII and the last lane is connected to USB. However Cadence torrent SERDES
doesn't support more than 2 protocols at the same time. Configure it only for
PCIe and QSGMII.

Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
Signed-off-by: Roger Quadros <rogerq@...com>
---
 arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
index 8e534ef8a3f5..0ecaba600704 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
@@ -6,6 +6,7 @@
 /dts-v1/;
 
 #include "k3-j7200-som-p0.dtsi"
+#include <dt-bindings/mux/mux-j7200-wiz.h>
 
 / {
 	chosen {
@@ -139,3 +140,8 @@
 	ti,driver-strength-ohm = <50>;
 	disable-wp;
 };
+
+&serdes_ln_ctrl {
+	idle-states = <SERDES0_LANE0_PCIE1_LANE0>, <SERDES0_LANE1_PCIE1_LANE1>,
+		      <SERDES0_LANE2_QSGMII_LANE1>, <SERDES0_LANE3_IP4_UNUSED>;
+};
-- 
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