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.edworthy@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);