[U-Boot,v1,13/15] aspeed: Add support for Clocks needed by MACs

Tom Rini trini at konsulko.com
Tue May 9 05:43:04 AEST 2017

On Mon, Apr 17, 2017 at 12:00:32PM -0700, maxims at google.com wrote:

> Add support for clocks needed by MACs to ast2500 clock driver.
> The clocks are D2-PLL, which is used by both MACs and PCLK_MAC1 and
> PCLK_MAC2 for MAC1 and MAC2 respectively.
> The rate of D2-PLL is hardcoded to 250MHz -- the value used in Aspeed
> SDK. It is not entirely clear from the datasheet how this clock is used
> by MACs, so not clear if the rate would ever need to be different. So,
> for now, hardcoding it is probably safer.
> The rate of PCLK_MAC{1,2} is chosen based on MAC speed selected through
> hardware strapping.
> So, the network driver would only need to enable these clocks, no need
> to configure the rate.
> Signed-off-by: Maxim Sloyko <maxims at google.com>
> Reviewed-by: Simon Glass <sjg at chromium.org>

Applied to u-boot/master, thanks!

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