[PATCH 1/1] nvmem: imx-ocotp: Fix MAC address reversal for i.MX6/7 derivates

[Ahmad Fatoum]

Hello Alexander,

On 03.05.23 16:16, Alexander Stein wrote:
> Not just i.MX8M, but all i.MX6/7 (and subtypes) need to reverse the
> MAC address read from fuses. Exceptions are i.MX6SLL and i.MX7ULP which
> do not support ethernet at all.

Can't we just drop the reverse_mac_address member then and make
reversing the default for mac-address?

Cheers,
Ahmad

> 
> Fixes: d0221a780cbc ("nvmem: imx-ocotp: add support for post processing")
> Signed-off-by: Alexander Stein <alexander.stein at ew.tq-group.com>
> ---
> Looking at [1] reading MAC address from fuses in u-boot is the same for
> all i.MX. Only difference is one or two MAC addresses.
> I hit the problem on TQMa6Q (i.MX6Q) and could test this patch. For the
> others I checked which have ethernet on NXP page.
> 
> [1] https://elixir.bootlin.com/u-boot/v2023.07-rc1/source/arch/arm/mach-imx/mac.c
> 
>  drivers/nvmem/imx-ocotp.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c
> index ac0edb6398f1..93628cd756ec 100644
> --- a/drivers/nvmem/imx-ocotp.c
> +++ b/drivers/nvmem/imx-ocotp.c
> @@ -490,6 +490,7 @@ 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 = {
> @@ -497,6 +498,7 @@ static const struct ocotp_params imx6sl_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 imx6sll_params = {
> @@ -511,6 +513,7 @@ static const struct ocotp_params imx6sx_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 imx6ul_params = {
> @@ -518,6 +521,7 @@ static const struct ocotp_params imx6ul_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 imx6ull_params = {
> @@ -525,6 +529,7 @@ static const struct ocotp_params imx6ull_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 imx7d_params = {
> @@ -532,6 +537,7 @@ static const struct ocotp_params imx7d_params = {
>  	.bank_address_words = 4,
>  	.set_timing = imx_ocotp_set_imx7_timing,
>  	.ctrl = IMX_OCOTP_BM_CTRL_DEFAULT,
> +	.reverse_mac_address = true,
>  };
>  
>  static const struct ocotp_params imx7ulp_params = {

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |