[U-Boot] [PATCH v2] net/designware: Consecutive writes to the same register to be avoided

Joe Hershberger joe.hershberger at gmail.com
Wed Jul 11 20:27:58 CEST 2012


Hi Dinh Nguyen,

On Fri, Jun 8, 2012 at 10:26 AM, Dinh Nguyen <gills702 at gmail.com> wrote:
> This commit is an add-on to f6c4191f. There are a few registers where
> consecutive writes to the same location should be avoided or have a delay.
>
> According to Synopsys, here is a list of the registers and bit(s) where
> consecutive writes should be avoided or a delay is required:
>
> DMA Registers:
> Register 0        Bit 7
> Register 6        All bits except for 24, 16-13, 2-1.
>
> GMAC Registers:
> Registers 0-3     All bits
> Registers 6-7     All bits
> Register 10       All bits
> Register 11       All bits except for 5-6.
> Registers 16-47   All bits
> Register 48       All bits except for 18-16, 14.
> Register 448      Bit 4.
> Register 459      Bits 0-3.
>
> Reviewd-by: Matthew Gerlach <mgerlach at altera.com>
> Signed-off-by: Dinh Nguyen <dinguyen at altera.com>
> ---

Applied to next, thanks.

-Joe


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