On Mon, Feb 22, 2021 at 8:34 PM ha ppay <andocn...@gmail.com> wrote:
>
> Hi RobertCNelson,
>
> Thank you for checking the relevant part.
> the description of the Device tree is as follows. Is this overwriting the
> setting? In fact, when I set this part to
> bus-width = <0x08>
> , the Boot time did not change much.
> Could you tell me if there is a way to check the current transfer bit mode?
>
>
> mmc@48060000 {
> compatible = "ti,omap4-hsmmc";
> ti,hwmods = "mmc1";
> ti,dual-volt;
> ti,needs-special-reset;
> ti,needs-special-hs-handling;
> dmas = < 0x2d 0x18 0x00 0x00 0x2d 0x19 0x00 0x00 >;
> dma-names = "tx\0rx";
> interrupts = < 0x40 >;
> reg = < 0x48060000 0x1000 >;
> status = "okay";
> bus-width = < 0x04 >; <=======
> pinctrl-names = "default";
> pinctrl-0 = < 0x2e >;
> cd-gpios = < 0x2f 0x06 0x01 >;
> vmmc-supply = < 0x30 >;
> phandle = < 0x288 >;
> };
Well, mmc@48060000 -> is the microSD on the BBBW -> which only has 4
data wires hooked up...
So, yeah, that won't change the eMMC..
PS, the factory default eMMC on these boards isn't known for speed,
the version used is more for reliability..
You can buy pretty cheap fast microSD on a 4-bit bus that will outpace
the factory default eMMC on a 8-bit bus..
Regards,
--
Robert Nelson
https://rcn-ee.com/
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups
"BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to beagleboard+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/beagleboard/CAOCHtYivJYXQnYQgmRUm5LV37D6jpSUhuLZtXcwJ7t_ySERURA%40mail.gmail.com.
