On Sun, Jan 29, 2023 at 07:32:31PM +0200, Abel Vesa wrote:
> On 23-01-17 07:14:49, Oleksij Rempel wrote:
> > According to the "i.MX 6UltraLite Applications Processor Reference Manual,
> > Rev. 2, 03/2017", BIT(13) is ENET1_125M_EN which is not controlling root
> > of PLL6. It is controlling ENET1 separately.
> >
> > So, instead of this picture (implementation before this patch):
> > fec1 <- enet_ref (divider) <---------------------------,
> > |- pll6_enet (gate)
> > fec2 <- enet2_ref_125m (gate) <- enet2_ref (divider) <-´
> >
> > we should have this one (after this patch):
> > fec1 <- enet1_ref_125m (gate) <- enet1_ref (divider) <-,
> > |- pll6_enet
> > fec2 <- enet2_ref_125m (gate) <- enet2_ref (divider) <-´
> >
> > With this fix, the RMII reference clock will be turned off, after
> > setting network interface down on each separate interface
> > (ip l s dev eth0 down). Which was not working before, on system with both
> > FECs enabled.
> >
> > Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
>
> I'm OK with this. Maybe a fixes tag ?
Hm. Initial commit was:
Fixes: 787b4271a6a0 ("clk: imx: add imx6ul clk tree support")
but this patch will not apply on top of it.
Next possible commit would be:
Fixes: 1487b60dc2d2 ("clk: imx6ul: Switch to clk_hw based API")
But this patch didn't introduce this issue, it was just refactoring.
What do you prefer?
Regards,
Oleksij
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