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Message-ID: <20201113101919.wega756egs7dinth@pali>
Date:   Fri, 13 Nov 2020 11:19:19 +0100
From:   Pali Rohár <pali@...nel.org>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     Marek Behún <kabel@...nel.org>,
        Gregory CLEMENT <gregory.clement@...tlin.com>,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        Terry Zhou <bjzhou@...vell.com>,
        Konstantin Porotchkin <kostap@...vell.com>
Subject: Re: [PATCH] clk: mvebu: a3700: fix the XTAL MODE pin to MPP1_9

Michael, Stephen: Could you take this clk patch?

On Friday 06 November 2020 11:51:18 Marek Behún wrote:
> Also, this is how A3720 WTMI code and ATF determines XTAL clock rate.
> No reason for kernel to do it differently.
> 
> Reviewed-by: Marek Behún <kabel@...nel.org>
> 
> On Fri,  6 Nov 2020 11:00:39 +0100
> Pali Rohár <pali@...nel.org> wrote:
> 
> > From: Terry Zhou <bjzhou@...vell.com>
> > 
> > There is an error in the current code that the XTAL MODE
> > pin was set to NB MPP1_31 which should be NB MPP1_9.
> > The latch register of NB MPP1_9 has different offset of 0x8.
> > 
> > Signed-off-by: Terry Zhou <bjzhou@...vell.com>
> > [pali: Fix pin name in commit message]
> > Signed-off-by: Pali Rohár <pali@...nel.org>
> > Fixes: 7ea8250406a6 ("clk: mvebu: Add the xtal clock for Armada 3700 SoC")
> > Cc: stable@...r.kernel.org
> > 
> > ---
> > This patch is present in Marvell SDK and also in Marvell's kernel fork:
> > https://github.com/MarvellEmbeddedProcessors/linux-marvell/commit/80d4cec4cef8282e5ac3aaf98ce3e68fb299a134
> > 
> > Konstantin Porotchkin wrote on Github that Gregory Clement was notified
> > about this patch, but as this patch is still not in mainline kernel I'm
> > sending it again for review.
> > 
> > In original commit message (only in commit message, not code) was
> > specified MPP9 pin on South Bridge, but correct is North Bridge.
> > ---
> >  drivers/clk/mvebu/armada-37xx-xtal.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/clk/mvebu/armada-37xx-xtal.c b/drivers/clk/mvebu/armada-37xx-xtal.c
> > index e9e306d4e9af..41271351cf1f 100644
> > --- a/drivers/clk/mvebu/armada-37xx-xtal.c
> > +++ b/drivers/clk/mvebu/armada-37xx-xtal.c
> > @@ -13,8 +13,8 @@
> >  #include <linux/platform_device.h>
> >  #include <linux/regmap.h>
> >  
> > -#define NB_GPIO1_LATCH	0xC
> > -#define XTAL_MODE	    BIT(31)
> > +#define NB_GPIO1_LATCH	0x8
> > +#define XTAL_MODE	    BIT(9)
> >  
> >  static int armada_3700_xtal_clock_probe(struct platform_device *pdev)
> >  {
> 

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