[PATCH 1/9] phy: samsung: Add Exynos USB DRD PHY driver

[Sam Protsenko]

On Mon, Jul 21, 2025 at 4:26 AM Mattijs Korpershoek
<mkorpershoek at kernel.org> wrote:
>
> On Sun, Jul 20, 2025 at 14:57, Sam Protsenko <semen.protsenko at linaro.org> wrote:
>
> > On Thu, Jul 17, 2025 at 1:58 AM Mattijs Korpershoek
> > <mkorpershoek at kernel.org> wrote:
> >>
> >> Hi Sam,
> >>
> >> Thank you for the patch.
> >>
> >
> > [snip]
> >
> >> > +
> >> > +#define EXYNOS850_DRD_UTMI                   0x50
> >> > +#define UTMI_FORCE_SLEEP                     BIT(0)
> >> > +#define UTMI_FORCE_SUSPEND                   BIT(1)
> >> > +#define UTMI_DM_PULLDOWN                     BIT(2)
> >> > +#define UTMI_DP_PULLDOWN                     BIT(3)
> >> > +#define UTMI_FORCE_BVALID                    BIT(4)
> >> > +#define UTMI_FORCE_VBUSVALID                 BIT(5)
> >>
> >> Comparing with the linux driver using
> >> commit cc52a697f87e ("phy: exynos5-usbdrd: support Exynos USBDRD 3.2 4nm controller")
> >>
> >> I notice that the defines are in reverse order (from 0 to 5 and linux
> >> has from 5 to 0).
> >>
> >> Is there any particular reason for this?
> >> I don't mind it too much but it makes diffing between linux and U-Boot a
> >> bit harder.
> >>
> >> Anyway, I've compared this with the linux driver and it looks good to
> >> me!
> >>
> >> Reviewed-by: Mattijs Korpershoek <mkorpershoek at kernel.org>
> >>
> >
> > Thank for reviewing this, Mattijs! Yeah, I kinda flipped the register
> > bits w.r.t. kernel's version, just because it looks better to me this
> > way (easier to read when it's sorted properly). Due to the driver
> > model API differences between kernel and U-Boot I had to rework the
> > whole structure of the driver, and I only added Exynos850 support for
> > now, so the difference between U-Boot and kernel versions is quite big
> > as it is anyway, so I figured it's not a big deal to reorder things
> > even more. Hope it's ok with you?
>
> It's ok with me. I was just curious if there was any special reason for
> re-ordering. I agree that it's easier to read with the sorting you have
> applied.
> I've noticed that only Exynos850 is supported for now. That's fine as
> well in my opinion!
>
> Feel free to pick this up through your tree.

I don't have a maintainer tree unfortunately. The easiest way for this
series would be probably to go through Samsung tree (Minkyu)?