linux-kernel - Re: [PATCH v2 2/3] mtd: core: add nvmem-partitions compatible to parse mtd as nvmem cells

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Date:   Wed, 3 Mar 2021 09:01:28 +0100
From:   Rafał Miłecki <zajec5@...il.com>
To:     Ansuel Smith <ansuelsmth@...il.com>,
        Richard Weinberger <richard@....at>
Cc:     devicetree@...r.kernel.org, Vignesh Raghavendra <vigneshr@...com>,
        Boris Brezillon <bbrezillon@...nel.org>,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        linux-mtd@...ts.infradead.org,
        Miquel Raynal <miquel.raynal@...tlin.com>
Subject: Re: [PATCH v2 2/3] mtd: core: add nvmem-partitions compatible to
 parse mtd as nvmem cells

On 16.02.2021 22:26, Ansuel Smith wrote:
> Partitions that contains the nvmem-partitions compatible will register
> their direct subonodes as nvmem cells and the node will be treated as a
> nvmem provider.
> 
> Signed-off-by: Ansuel Smith <ansuelsmth@...il.com>

Tested-by: Rafał Miłecki <rafal@...ecki.pl>


I applied this patch on top of the:
[PATCH] mtd: parsers: ofpart: limit parsing of deprecated DT syntax

I succesfully used NVMEM cell defined in bootloader mtd partition for
reading device MAC address.

partitions {
	compatible = "fixed-partitions";
	#address-cells = <1>;
	#size-cells = <1>;

	partition@0 {
		compatible = "nvmem-partitions";
		label = "bootloader";
		reg = <0x0 0x100000>;
		#address-cells = <1>;
		#size-cells = <1>;
		ranges = <0 0x0 0x100000>;

		base_mac_addr: mac@...a0 {
			reg = <0x106a0 0x6>;
		};
	};
}