linux-kernel - [PATCH 2/2] powerpc: dts: t1040rdb: enable both CPU ports

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Date:   Fri, 24 Feb 2023 17:59:40 +0200
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Michael Ellerman <mpe@...erman.id.au>,
        linuxppc-dev@...ts.ozlabs.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Maxim Kochetkov <fido_max@...ox.ru>,
        Maxim Kiselev <bigunclemax@...il.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: [PATCH 2/2] powerpc: dts: t1040rdb: enable both CPU ports

Since commit eca70102cfb1 ("net: dsa: felix: add support for changing
DSA master") included in kernel v6.1, the driver supports 2 CPU ports,
and they can be put in a LAG, for example (see
Documentation/networking/dsa/configuration.rst for more details).

Defining the second CPU port in the device tree should not cause any
compatibility issue, because the default CPU port was &seville_port8
before this change, and still is &seville_port8 now (the numerically
first CPU port is used by default).

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 arch/powerpc/boot/dts/fsl/t1040rdb.dts      | 5 ++++-
 arch/powerpc/boot/dts/fsl/t1040si-post.dtsi | 2 ++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/boot/dts/fsl/t1040rdb.dts b/arch/powerpc/boot/dts/fsl/t1040rdb.dts
index b6733e7e6580..dd3aab81e9de 100644
--- a/arch/powerpc/boot/dts/fsl/t1040rdb.dts
+++ b/arch/powerpc/boot/dts/fsl/t1040rdb.dts
@@ -180,6 +180,9 @@ &seville_port7 {
 };
 
 &seville_port8 {
-	ethernet = <&enet0>;
+	status = "okay";
+};
+
+&seville_port9 {
 	status = "okay";
 };
diff --git a/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi b/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi
index f58eb820eb5e..ad0ab33336b8 100644
--- a/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi
@@ -686,6 +686,7 @@ seville_port7: port@7 {
 			seville_port8: port@8 {
 				reg = <8>;
 				phy-mode = "internal";
+				ethernet = <&enet0>;
 				status = "disabled";
 
 				fixed-link {
@@ -697,6 +698,7 @@ fixed-link {
 			seville_port9: port@9 {
 				reg = <9>;
 				phy-mode = "internal";
+				ethernet = <&enet1>;
 				status = "disabled";
 
 				fixed-link {
-- 
2.34.1