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

[Alexander Stein]

Hello Ahmad,

Am Mittwoch, 3. Mai 2023, 16:24:13 CEST schrieb 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?

That's a nice idea. Thanks

Regards
Alexander

> 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/m
> > ac.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 = {


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