linux-kernel - Re: [PATCH V2 RESEND] clk: mxs: Fix invalid 32-bit access to frac registers

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Date:	Tue, 10 Feb 2015 19:54:52 -0200
From:	Fabio Estevam <festevam@...il.com>
To:	Stefan Wahren <stefan.wahren@...e.com>
Cc:	Sascha Hauer <kernel@...gutronix.de>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Shawn Guo <shawn.guo@...aro.org>,
	Mike Turquette <mturquette@...aro.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Marek Vasut <marex@...x.de>, Zhi Li <lznuaa@...il.com>
Subject: Re: [PATCH V2 RESEND] clk: mxs: Fix invalid 32-bit access to frac registers

Hi Stefan,

On Tue, Feb 10, 2015 at 7:24 PM, Stefan Wahren <stefan.wahren@...e.com> wrote:

> thanks this is very helpful. I built the linux-next for my Duckbill and add the
> SSP2 section from imx28-evk.dts into imx28-duckbill.dts.
>
> Without my patch i get the following for HW_CLKCTRL_FRAC0:
>
> ./memwatch -a 0x800401B0
>
> 0x800401b0: 0x5e5b5513
>
> With my patch i get:
>
> ./memwatch -a 0x800401B0
>
> 0x800401b0: 0x5e1b5513
>
> So it looks like a problem in my patch.

Yes, let's try to get the same value HW_CLKCTRL_FRAC0.

> I orded such a flash chip, but it will take some time until i can use it with my
> hardware.

Thanks for doing this.

Maybe if you find out a way to fix the calculation of
HW_CLKCTRL_FRAC0, then I can test it on my board.

Regards,

Fabio Estevam
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