Hi Jaehoon Chung, On 25 May 2017 14:50 Jaehoon Chung wrote: > Hi, > > On 05/24/2017 10:54 PM, Phil Edworthy wrote: > > The code currently defaults to the slowest clock speed that can be > > achieved, which can be significantly lower than the SD spec. > > Is there any problem..As i know, it should be changed from 1 to min_clk. The only problem is that the initial SD clock can be very slow so it increases the time to start SD. Admittedly, it's a very small increase in time, but we should use the correct initial clock speed.
Thanks Phil > > > > Signed-off-by: Phil Edworthy <phil.edwor...@renesas.com> > > --- > > drivers/mmc/mmc.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index > > 72fc177..dff1be3 100644 > > --- a/drivers/mmc/mmc.c > > +++ b/drivers/mmc/mmc.c > > @@ -1676,7 +1676,7 @@ int mmc_start_init(struct mmc *mmc) #endif > > mmc->ddr_mode = 0; > > mmc_set_bus_width(mmc, 1); > > - mmc_set_clock(mmc, 1); > > + mmc_set_clock(mmc, 400000); > > > > /* Reset the Card */ > > err = mmc_go_idle(mmc); > > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
