[U-Boot] [PATCH] powerpc/mpc83xx: set TXEQA/TXEQE value for mpc837XE sata

[Kim Phillips]

On Wed, 16 Nov 2011 15:36:25 +0800
<Chang-Ming.Huang at freescale.com> wrote:

> From: Jerry Huang <Chang-Ming.Huang at freescale.com>
> 
> In the current u-boot code, the value of these fields are the reserved
> value (0b100), through the signal integrity measurement on freescale's
> board with these reserved setting, the signal eye is out of the recommended
> spec for non-transition amplitude at 500mV nominal.
> According to the errata for MPC8379E, we should make a change to the
> recommended setting from essentially nothing at this time to 0b001 for SATA.

what erratum #?  How am I supposed to know this won't break the 8308
boards that share this file?

> +		/* Configure SRDSCR0 */
> +		tmp = in_be32(regs + FSL_SRDSCR0_OFFS);
> +		tmp &= ~FSL_SRDSCR0_TXEQA_MASK;
> +		tmp |= FSL_SRDSCR0_TXEQA_SATA;
> +		tmp &= ~FSL_SRDSCR0_TXEQE_MASK;
> +		tmp |= FSL_SRDSCR0_TXEQE_SATA;
> +		out_be32(regs + FSL_SRDSCR0_OFFS, tmp);
> +

use clrsetbits_be32

Kim