Thread (15 messages) 15 messages, 2 authors, 2020-02-28
STALE2342d
Revisions (4)
  1. v5 [diff vs current]
  2. v6 current
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  4. v8 [diff vs current]

[PATCH v6 6/6] MIPS: DTS: CI20: make DM9000 Ethernet controller use NVMEM to find the default MAC address

From: H. Nikolaus Schaller <hidden>
Date: 2020-02-26 11:16:29
Also in: linux-mips, lkml
Subsystem: ingenic jz47xx socs, mips, the rest · Maintainers: Paul Cercueil, Thomas Bogendoerfer, Linus Torvalds

There is a unique MAC address programmed into the eFuses
of the JZ4780 chip in the CI20 factory. By using this
for initializing the DM9000 Ethernet controller, every
CI20 board has an individual - but stable - MAC address
and DHCP can assign stable IP addresses.

Signed-off-by: H. Nikolaus Schaller <redacted>
---
 arch/mips/boot/dts/ingenic/ci20.dts | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 37b93166bf22..6dc1f9eeff00 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -355,6 +355,9 @@
 
 		interrupt-parent = <&gpe>;
 		interrupts = <19 4>;
+
+		nvmem-cells = <&eth0_addr>;
+		nvmem-cell-names = "mac-address";
 	};
 };
 
-- 
2.23.0
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