linux-kernel - Re: [PATCH v3] ppc44x:PHY fixup for USB on canyonlands board

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Date:	Fri, 26 Nov 2010 15:23:42 +0100
From:	Wolfgang Denk <wd@...x.de>
To:	Rupjyoti Sarmah <rsarmah@...c.com>
cc:	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org,
	rsarmah@....com
Subject: Re: [PATCH v3] ppc44x:PHY fixup for USB on canyonlands board

Dear Rupjyoti Sarmah,

In message <201011261110.oAQBANZL012455@...c.com> you wrote:
>
> +				cpld@2,0 {
> +					#address-cells = <1>;
> +					#size-cells = <1>;
> +					compatible = "apm,ppc460ex-bcsr";

This results in a mix of "amcc," and "apm," strings.

Are there any plans to unify this?


> diff --git a/arch/powerpc/platforms/44x/canyonlands.c b/arch/powerpc/platforms/44x/canyonlands.c
> new file mode 100644
> index 0000000..61e80ce
> --- /dev/null
> +++ b/arch/powerpc/platforms/44x/canyonlands.c
> @@ -0,0 +1,120 @@
> +/*
> + * This contain platform specific code for Canyonlands board based on
> + * APM ppc44x series of processors.

Canyonlands is always PPC460EX, or does it ever come with other
processors as well?

> +static int __init ppc44x_probe(void)
> +{
> +	unsigned long root = of_get_flat_dt_root();
> +		if (of_flat_dt_is_compatible(root, "amcc,canyonlands")) {
> +			ppc_pci_set_flags(PPC_PCI_REASSIGN_ALL_RSRC);
> +			return 1;
> +		}
> +	return 0;
> +}

Bad indentation.

> +	/* Disable USB, through the BCSR7 bits */
> +	setbits8(&bcsr[7], BCSR_USB_EN);
> +
> +	/* Wait for a while after reset */
> +	msleep(100);
> +
> +	/* Enable USB here */
> +	clrbits8(&bcsr[7], BCSR_USB_EN);
> +
> +	/*
> +	 * Configure multiplexed gpio16 and gpio19 as alternate1 output
> +	 * source after USB reset.This configuration is done through GPIO0_TSRH
> +	 * and GPIO0_OSRH bits 0:1 and 6:7.
> +	 */

Earlier versions of the patch included a delay after the clrbits8()
call as well. Is it intentional that you dropped this now?


Best regards,

Wolfgang Denk

-- 
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