Re: [U-Boot] guys, can you see some init code for davinci's chipselect bit width driving DM9000A?

yaojin liu wrote:

hi: dm9000a works as 16bit bus width. however, i have not seen any init code for the dm355's chipselect. and by default ,the cs1 is 8bit bus width at reset. how doew it work?

I think the setup is done by the UBL provided by TI. U-boot is a 3-rd stage bootloader for DM355. The RBL (Rom Bootloader) loads the UBL from storage, that sets up the required peripherals (RAM / AEMIF), and then loads u-boot.

u-boot does not set the a2cr register in the AEMIF interface, but the UBL has already configured it for 16-bit access.

Best regards, Stefano Babic