From: Grygorii Strashko <grygorii.strashko@ti.com>
To: Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>,
Lokesh Vutla <lokeshvutla@ti.com>,
Tero Kristo <kristo@kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
Grygorii Strashko <grygorii.strashko@ti.com>
Subject: [PATCH] arm64: dts: ti: k3-am642-main: fix ports mac properties
Date: Tue, 8 Jun 2021 21:49:40 +0300 [thread overview]
Message-ID: <20210608184940.25934-1-grygorii.strashko@ti.com> (raw)
The current device tree CPSW3g node adds non-zero "mac-address" property to
the ports, which prevents random MAC address assignment to network devices
if bootloader failed to update DT. This may cause more then one host to
have the same MAC in the network.
mac-address = [00 00 de ad be ef];
mac-address = [00 01 de ad be ef];
In addition, there is one MAC address available in eFuse registers which
can be used for default port 1.
Hence, fix ports MAC properties by:
- resetting "mac-address" property to 0
- adding ti,syscon-efuse = <&main_conf 0x200> to Port 1
Fixes: 3753b12877b6 ("arm64: dts: ti: k3-am64-main: Add CPSW DT node")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
index effb9d2e3c25..7f7178a7a055 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
@@ -514,7 +514,8 @@
ti,mac-only;
label = "port1";
phys = <&phy_gmii_sel 1>;
- mac-address = [00 00 de ad be ef];
+ mac-address = [00 00 00 00 00 00];
+ ti,syscon-efuse = <&main_conf 0x200>;
};
cpsw_port2: port@2 {
@@ -522,7 +523,7 @@
ti,mac-only;
label = "port2";
phys = <&phy_gmii_sel 2>;
- mac-address = [00 01 de ad be ef];
+ mac-address = [00 00 00 00 00 00];
};
};
--
2.17.1
next reply other threads:[~2021-06-08 18:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-08 18:49 Grygorii Strashko [this message]
2021-06-09 5:12 ` [PATCH] arm64: dts: ti: k3-am642-main: fix ports mac properties Vignesh Raghavendra
2021-06-11 19:01 ` Nishanth Menon
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