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Date: Thu, 10 Jun 2010 13:42:02 +0200
From: Sascha Hauer <s.hauer@pengutronix.de>
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Subject: Re: [PATCH] Add support for Eukrea CPUIMX35
To: Eric =?iso-8859-15?Q?B=E9nard?= <eric@eukrea.com>
Cc: barebox@lists.infradead.org

Hi Eric,

On Thu, Jun 10, 2010 at 09:43:02AM +0200, Eric B=E9nard wrote:
> +
> +#define MPCTL_PARAM_399     (IMX_PLL_PD(0) | IMX_PLL_MFD(15) | IMX_PLL_M=
FI(8) | IMX_PLL_MFN(5))
> +#define MPCTL_PARAM_532     ((1 << 31) | IMX_PLL_PD(0) | IMX_PLL_MFD(11)=
 | IMX_PLL_MFI(11) | IMX_PLL_MFN(1))
> +
> +static int do_cpufreq(struct command *cmdtp, int argc, char *argv[])
> +{
> +	unsigned long freq;
> +
> +	if (argc !=3D 2)
> +		return COMMAND_ERROR_USAGE;
> +
> +	freq =3D simple_strtoul(argv[1], NULL, 0);
> +
> +	switch (freq) {
> +	case 399:
> +		writel(MPCTL_PARAM_399, IMX_CCM_BASE + CCM_MPCTL);
> +		break;
> +	case 532:
> +		writel(MPCTL_PARAM_532, IMX_CCM_BASE + CCM_MPCTL);
> +		break;
> +	default:
> +		return COMMAND_ERROR_USAGE;
> +	}
> +
> +	printf("Switched CPU frequency to %dMHz\n", freq);
> +
> +	return 0;
> +}

I originally added this to the phyCORE i.MX35 board because we had
problems running it at 532 MHz. If you do not have it you probably don't
need it. Though I can keep it if you wish.

Sascha

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