[PATCH v2 0/3] Read MAC Address from SST vendor specific SFDP region

From: Manikandan Muralidharan
Date: Wed Mar 26 2025 - 03:22:36 EST


This patch series adds support to parse the SFDP SST vendor map, read and
store the EUI-48 and EUI-64 Address (if its programmed) using the
resource-managed devm_kcalloc which will be freed on driver detach.
Register EUI addresses into NVMEM framework for the net drivers to access
them using nvmem properties.
This change ensures consistent and reliable MAC address retrieval
from QSPI benefiting boards like the sama5d29 curiosity and
sam9x75 curiosity.

--------
changes in v2:

- 1/3 - parse the SST vendor table, read and store the addresses
into a resource - managed space. Register the addresses
into NVMEM framework
- 2/3 - add support to update the QSPI partition into 'fixed-partition'
binding
--------

Manikandan Muralidharan (3):
mtd: spi-nor: sfdp: parse SFDP SST vendor map and register EUI
addresses into NVMEM framework
ARM: dts: microchip: sama5d29_curiosity: update the QSPI partitions
using "fixed-partition" binding
ARM: dts: microchip: sama5d29_curiosity: Add nvmem-layout in QSPI for
EUI48 MAC Address

.../dts/microchip/at91-sama5d29_curiosity.dts | 62 ++++---
drivers/mtd/spi-nor/sfdp.c | 161 ++++++++++++++++++
include/linux/mtd/spi-nor.h | 7 +
3 files changed, 206 insertions(+), 24 deletions(-)

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2.25.1