Re: [PATCH 1/1] mmc: Set optimal I/O size when mmc_setip_queue

[Shawn Lin]

On 2023/8/25 16:39, Sharp.Xia@xxxxxxxxxxxx wrote:
> On Fri, 2023-08-25 at 16:11 +0800, Shawn Lin wrote:
> >   	
> >   Hi Sharp,

...

> > > 1024
> Hi Shawn,
>
> What is your readahead value before and after applying this patch?

The original readahead is 128, and after applying the patch is 1024


cat /d/mmc0/ios
clock:          200000000 Hz
actual clock:   200000000 Hz
vdd:            18 (3.0 ~ 3.1 V)
bus mode:       2 (push-pull)
chip select:    0 (don't care)
power mode:     2 (on)
bus width:      3 (8 bits)
timing spec:    10 (mmc HS400 enhanced strobe)
signal voltage: 1 (1.80 V)
driver type:    0 (driver type B)

The driver I used is sdhci-of-dwcmshc.c with a KLMBG2JETDB041 eMMC chip.