[PATCH v2 1/2] clk: rockchip: add bindings for the mmc clock phases

Alexandru Stan amstan at chromium.org
Mon Nov 17 11:50:51 PST 2014

Sorry for my previous mail, I sent it as HTML and also top posted.
Here it goes again:

On Mon, Nov 17, 2014 at 11:39 AM, Mike Turquette <mturquette at linaro.org> wrote:
> It looks like you are adding new clocks to handle the phase requirement.
> Is that the right thing to do? Don't these clks already exist (e.g.
I actually need to control 2 phases, one of them is used when
outputting data, the other when sampling. Sunxi does something
similar: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-July/273273.html

Another reason it wouldn't work is because the upstream clock(eg
SCLK_SDMMC) is twice as fast as the real clock(see RK3288_CLKGEN_DIV
in drivers/mmc/host/dw_mmc-rockchip.c), since that clock goes to a /2
divider to be able to do the 90 degree clock phases.

Alexandru Stan

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