linux-kernel - [PATCH V2 0/3] nvmem: support post read for U-Boot's "ethaddr"

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Message-Id: <20230318171356.29515-1-zajec5@gmail.com>
Date:   Sat, 18 Mar 2023 18:13:53 +0100
From:   Rafał Miłecki <zajec5@...il.com>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Michael Walle <michael@...le.cc>, gregkh@...uxfoundation.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, u-boot@...ts.denx.de,
        Rafał Miłecki <rafal@...ecki.pl>
Subject: [PATCH V2 0/3] nvmem: support post read for U-Boot's "ethaddr"

From: Rafał Miłecki <rafal@...ecki.pl>

This change is required for NVMEM consumers to get expected MAC address
from U-Boot env data variable "ethaddr".

To address some previous concerns:
1. Yes, U-Boot env binding & driver should be converted to NVMEM layout
2. My priority is to get working MAC rather than fancy DT syntax
3. I AM going to convert U-Boot env into layout later
4. This work DOESN'T conflict with layout migration
5. This code WILL stay during / after layout migration

My brain limitations don't allow me to handle everything at once, please
let's review what I already have here.

Rafał Miłecki (3):
  dt-bindings: nvmem: u-boot,env: add MAC's #nvmem-cell-cells
  nvmem: core: support specifying both: cell raw data & post read
    lengths
  nvmem: u-boot-env: post-process "ethaddr" env variable

 .../devicetree/bindings/nvmem/u-boot,env.yaml |  7 ++++-
 drivers/nvmem/Kconfig                         |  1 +
 drivers/nvmem/core.c                          | 11 +++++---
 drivers/nvmem/u-boot-env.c                    | 26 +++++++++++++++++++
 include/linux/nvmem-provider.h                |  2 ++
 5 files changed, 42 insertions(+), 5 deletions(-)

-- 
2.34.1