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Message-ID: <CAGkQfmOZBi4tzUSEAD7J+w_v+pZ_yFgPRBaYaLnW-ptFZO0rvg@mail.gmail.com> Date: Thu, 14 Sep 2017 09:41:36 +0200 From: romain izard <romain.izard@...ile-devices.fr> To: Alexandre Belloni <alexandre.belloni@...e-electrons.com> Cc: Nicolas Ferre <nicolas.ferre@...rochip.com>, Boris Brezillon <boris.brezillon@...e-electrons.com>, Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...eaurora.org>, Ludovic Desroches <ludovic.desroches@...rochip.com>, Jonathan Cameron <jic23@...nel.org>, Wenyou Yang <wenyou.yang@...el.com>, Josh Wu <rainyfeeling@...look.com>, David Woodhouse <dwmw2@...radead.org>, Brian Norris <computersforpeace@...il.com>, Marek Vasut <marek.vasut@...il.com>, Cyrille Pitchen <cyrille.pitchen@...ev4u.fr>, Thierry Reding <thierry.reding@...il.com>, Richard Genoud <richard.genoud@...il.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Alan Stern <stern@...land.harvard.edu>, linux-clk@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>, linux-iio@...r.kernel.org, linux-mtd <linux-mtd@...ts.infradead.org>, linux-pwm@...r.kernel.org, linux-serial@...r.kernel.org, linux-usb@...r.kernel.org, linux-arm-kernel <linux-arm-kernel@...ts.infradead.org> Subject: Re: [PATCH v1 03/10] clk: at91: pmc: Support backup for programmable clocks 2017-09-13 19:03 GMT+02:00 Alexandre Belloni <alexandre.belloni@...e-electrons.com>: > On 13/09/2017 at 14:29:35 +0200, Nicolas Ferre wrote: >> On 08/09/2017 at 17:35, Romain Izard wrote: >> > From: Romain Izard <romain.izard@...ile-devices.fr> >> > >> > Save and restore the System Clock and Programmable Clock register for >> > the backup use case. >> >> "System Clock" seems to be handled in another patch. >> >> > Signed-off-by: Romain Izard <romain.izard.pro@...il.com> >> > --- >> > drivers/clk/at91/pmc.c | 5 +++++ >> > 1 file changed, 5 insertions(+) >> > >> > diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c >> > index 07dc2861ad3f..5421b03553ec 100644 >> > --- a/drivers/clk/at91/pmc.c >> > +++ b/drivers/clk/at91/pmc.c >> > @@ -66,6 +66,7 @@ static struct >> > u32 pcr[PMC_MAX_IDS]; >> > u32 audio_pll0; >> > u32 audio_pll1; >> > + u32 pckr[3]; >> >> Some products have different numbers of PCK (only 2 on at91sam9x5 for >> instance)... >> > > My opinion is that it will be time to change that when multiple SoCs will > need to save their registers. > For the next version, I'll add a #define. But as this code requires a device tree node with the compatible string "atmel,sama5d2-pmc", I believe that we can ignore other chips for now. -- Romain Izard
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