On 3/8/24 00:20, E Shattow wrote:
On Sun, Mar 3, 2024 at 5:02 AM Heinrich Schuchardt <heinrich.schuchardt@canonical.com mailto:heinrich.schuchardt@canonical.com> wrote: ...
+The board provides the DIP switches MSEL[1:0] to select the boot device out of +SPI flash, eMMC, SD-card, UART. To select booting from SD-card set the DIP +switches MSEL[1:0] to 10.This does not match the [Milk-V Mars vendor documentation](https://milkv.io/docs/mars/getting-started/bootloader https://milkv.io/docs/mars/getting-started/bootloader). Maybe you have a different board revision?
Thank you for reviewing.
My board revision is V1.21 according to the silk screen.
The Milk-V Mars has DIP switches for the boot selection as shown in https://gist.github.com/xypron/e28f95b1ed6911aeb9699ba63ae1a885
If you look at the photo https://milkv.io/assets/images/mars-icon-04-e8814f18158a0e9d4387f4fa330693f1... in the https://milkv.io/mars page, it also shows DIP switches (in the SPI-Flash position) on a rev 1.2 board.
Did you see a board without DIP switches being sold?
The silk screen markings on the board and the switch don't match. The same confusion exists on the VisionFive2.
So maybe I should better write in a table:
SPI-Flash: GPIO0=L GPIO1=L
SD-Card: GPIO0=H GPIO1=L
eMMC: GPIO0=L GPIO1=H
UART: GPIO0=H GPIO1=H
Best regards
Heinrich