linux-kernel - Re: [PATCH 6/7] hwrng: exynos: Enable Exynos850 support

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Date: Tue, 18 Jun 2024 15:25:23 -0500
From: Sam Protsenko <semen.protsenko@...aro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Łukasz Stelmach <l.stelmach@...sung.com>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Rob Herring <robh@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Olivia Mackall <olivia@...enic.com>, Herbert Xu <herbert@...dor.apana.org.au>, 
	Alim Akhtar <alim.akhtar@...sung.com>, linux-samsung-soc@...r.kernel.org, 
	linux-crypto@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/7] hwrng: exynos: Enable Exynos850 support

On Tue, Jun 18, 2024 at 1:39 AM Krzysztof Kozlowski <krzk@...nel.org> wrote:
>
> On 18/06/2024 02:37, Sam Protsenko wrote:
> > Add Exynos850 compatible and its driver data. It's only possible to
> > access TRNG block via SMC calls in Exynos850, so specify that fact using
> > QUIRK_SMC in the driver data.
> >
> > Signed-off-by: Sam Protsenko <semen.protsenko@...aro.org>
> > ---
> >  drivers/char/hw_random/exynos-trng.c | 3 +++
> >  1 file changed, 3 insertions(+)
> >
> > diff --git a/drivers/char/hw_random/exynos-trng.c b/drivers/char/hw_random/exynos-trng.c
> > index 98b7a8ebb909..3368a08df9ce 100644
> > --- a/drivers/char/hw_random/exynos-trng.c
> > +++ b/drivers/char/hw_random/exynos-trng.c
> > @@ -333,6 +333,9 @@ static DEFINE_SIMPLE_DEV_PM_OPS(exynos_trng_pm_ops, exynos_trng_suspend,
> >  static const struct of_device_id exynos_trng_dt_match[] = {
> >       {
> >               .compatible = "samsung,exynos5250-trng",
> > +     }, {
> > +             .compatible = "samsung,exynos850-trng",
> > +             .data = (void *)QUIRK_SMC,
>
> Probably this (and in previous patch) should be called flags, not
> quirks. Quirks are for work-arounds.
>

Thanks for the quick review! Will submit v2 soon with all the comments
addressed.


> Best regards,
> Krzysztof
>