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Message-ID: <96c1ed7e-a2b7-a9a3-f7d4-12eeb099e14b@pengutronix.de>
Date: Mon, 28 Nov 2022 09:02:16 +0100
From: Ahmad Fatoum <a.fatoum@...gutronix.de>
To: Nikolaus Voss <nikolaus.voss@...g-streit.com>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
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>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Rob Herring <robh+dt@...nel.org>, nv@...n.de
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] nvmem: imx-ocotp: reverse MAC on imx6qdl
Hello Nikolaus,
On 24.11.22 17:50, Nikolaus Voss wrote:
> Ethernet MAC on iMX6Q/DL is stored in OTP in little-endian byte order. I
> suspect that this is true for all iMX flavors. If so, we could get rid
> of the .reverse_mac_address attribute entirely.
I also think all i.MX flavors are similar here. The barebox driver has had
a MAC address parsing function for a few years[1] and it's the same for
all i.MX variants. The only different SoC is VF610, but that has a standalone
driver in Linux.
[1]: https://elixir.bootlin.com/barebox/v2022.11.0/source/drivers/nvmem/ocotp.c#L551
> Signed-off-by: Nikolaus Voss <nikolaus.voss@...g-streit.com>
Reviewed-by: Ahmad Fatoum <a.fatoum@...gutronix.de>
Cheers,
Ahmad
> ---
> drivers/nvmem/imx-ocotp.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c
> index 14284e866f26e..a39a0defb070a 100644
> --- a/drivers/nvmem/imx-ocotp.c
> +++ b/drivers/nvmem/imx-ocotp.c
> @@ -496,6 +496,7 @@ static const struct ocotp_params imx6q_params = {
> .bank_address_words = 0,
> .set_timing = imx_ocotp_set_imx6_timing,
> .ctrl = IMX_OCOTP_BM_CTRL_DEFAULT,
> + .reverse_mac_address = true,
> };
>
> static const struct ocotp_params imx6sl_params = {
--
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