AM6412: OSPI bootmode

Hello Daniel,
AM64x GP EVM has Cypress S28HS512T, which is an xSPI compliant OSPI flash.
- BOOTMODE pins is configurd to boot from xSPI boot mode
- RBL starts booting r5-spl with xSPI boot mode (refer to 4.4.1.2 xSPI Boot of AM64x TRM)
- Once r5-spl starts to run, it is possible for u-boot to (re)configure xSPI/OSPI... as needed.
git.ti.com/gitweb
Best,
-Hong

Hello Hong, again, how should I set the bootmode pins for an OSPI Boot Flash which starts up default in x1 mode? I guess the bootmode pins should be set to OSPI, or? The interface should also start with x1 in OSPI mode, or?

Regards

Daniel

Hello Daniel,
Here is my BOOTMODE pins configured for xSPI boot mode for RBL booting r5-spl on TI AM64x GP EVM
SW2:1100 1110
SW3:0100 0000
=> md.l 0x43000030 1
43000030: 00000273
Best,
-Hong

Hi Hong,

if I use a OSPI boot Flash, which starts default in x1 mode after power-up, I have to use xSPI instead of OSPI? Is that correct?

Thanks

Regards

Daniel

Hello Daniel,
Let's use OSPI flash on AM64x GP EVM as an example.

It boots x1 by default.

=> md.l 0x43000030 1
43000030: 0273
BOOT_MODE_CONFIG = B[9:7]= 100
BOOT_MODE = B[6:3] = 1110
=> B[9]=SFPD=1 => SFDP enabled
=> B[8]=Read_cmd=0 => 0x0B Read Command
=> B[7]=Mode=0 => 1S-1S-1S mode @ 50MHz
=> B[6:3] = 1110 => xSPI

So I'd recommend to check the OSPI flash in your design.
Best,
-Hong

Hi Hong, the settings may ok for the used flash on the EVM. Could you please check if the "MX25UM25645G" from Macronix can be used with your settings provided?_MX25UM25645G.pdf

THX

Regards

Daniel