[PATCH AUTOSEL 5.10 30/53] MIPS: mscc: ocelot: disable all switch ports by default

Sasha Levin
2021-09-10T00:55:27Z

From: Vladimir Oltean <vladimir.oltean@nxp.com>

[ Upstream commit 0181f6f19c6c35b24f1516d8db22f3bbce762633 ]

The ocelot switch driver used to ignore ports which do not have a
phy-handle property and not probe those, but this is not quite ok since
it is valid to not have a phy-handle property if there is a fixed-link.

It seems that checking for a phy-handle was a proxy for the proper check
which is for the status, but that doesn't make a lot of sense, since the
ocelot driver already iterates using for_each_available_child_of_node
which skips the disabled ports, so I have no idea.

Anyway, a widespread pattern in device trees is for a SoC dtsi to
disable by default all hardware, and let board dts files enable what is
used. So let's do that and enable only the ports with a phy-handle in
the pcb120 and pcb123 device tree files.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/mips/boot/dts/mscc/ocelot.dtsi | 11 +++++++++++
arch/mips/boot/dts/mscc/ocelot_pcb120.dts | 8 ++++++++
arch/mips/boot/dts/mscc/ocelot_pcb123.dts | 4 ++++
3 files changed, 23 insertions(+)

diff --git a/arch/mips/boot/dts/mscc/ocelot.dtsi b/arch/mips/boot/dts/mscc/ocelot.dtsi
index 535a98284dcb..e51db651af13 100644
--- a/arch/mips/boot/dts/mscc/ocelot.dtsi
+++ b/arch/mips/boot/dts/mscc/ocelot.dtsi
@@ -150,36 +150,47 @@ ethernet-ports {

port0: port@0 {
reg = <0>;
+ status = "disabled";
};
port1: port@1 {
reg = <1>;
+ status = "disabled";
};
port2: port@2 {
reg = <2>;
+ status = "disabled";
};
port3: port@3 {
reg = <3>;
+ status = "disabled";
};
port4: port@4 {
reg = <4>;
+ status = "disabled";
};
port5: port@5 {
reg = <5>;
+ status = "disabled";
};
port6: port@6 {
reg = <6>;
+ status = "disabled";
};
port7: port@7 {
reg = <7>;
+ status = "disabled";
};
port8: port@8 {
reg = <8>;
+ status = "disabled";
};
port9: port@9 {
reg = <9>;
+ status = "disabled";
};
port10: port@10 {
reg = <10>;
+ status = "disabled";
};
};
};
diff --git a/arch/mips/boot/dts/mscc/ocelot_pcb120.dts b/arch/mips/boot/dts/mscc/ocelot_pcb120.dts
index 897de5025d7f..d2dc6b3d923c 100644
--- a/arch/mips/boot/dts/mscc/ocelot_pcb120.dts
+++ b/arch/mips/boot/dts/mscc/ocelot_pcb120.dts
@@ -69,40 +69,48 @@ phy4: ethernet-phy@3 {
};

&port0 {
+ status = "okay";
phy-handle = <&phy0>;
};

&port1 {
+ status = "okay";
phy-handle = <&phy1>;
};

&port2 {
+ status = "okay";
phy-handle = <&phy2>;
};

&port3 {
+ status = "okay";
phy-handle = <&phy3>;
};

&port4 {
+ status = "okay";
phy-handle = <&phy7>;
phy-mode = "sgmii";
phys = <&serdes 4 SERDES1G(2)>;
};

&port5 {
+ status = "okay";
phy-handle = <&phy4>;
phy-mode = "sgmii";
phys = <&serdes 5 SERDES1G(5)>;
};

&port6 {
+ status = "okay";
phy-handle = <&phy6>;
phy-mode = "sgmii";
phys = <&serdes 6 SERDES1G(3)>;
};

&port9 {
+ status = "okay";
phy-handle = <&phy5>;
phy-mode = "sgmii";
phys = <&serdes 9 SERDES1G(4)>;
diff --git a/arch/mips/boot/dts/mscc/ocelot_pcb123.dts b/arch/mips/boot/dts/mscc/ocelot_pcb123.dts
index ef852f382da8..7d7e638791dd 100644
--- a/arch/mips/boot/dts/mscc/ocelot_pcb123.dts
+++ b/arch/mips/boot/dts/mscc/ocelot_pcb123.dts
@@ -47,17 +47,21 @@ &mdio0 {
};

&port0 {
+ status = "okay";
phy-handle = <&phy0>;
};

&port1 {
+ status = "okay";
phy-handle = <&phy1>;
};

&port2 {
+ status = "okay";
phy-handle = <&phy2>;
};

&port3 {
+ status = "okay";
phy-handle = <&phy3>;
};
--
2.30.2