AM3352: Why delay is required

Hi

It's related to

     https://e2e.ti.com/support/processors/f/processors-forum/983903/am3352-dd3-initialization-at-u-boot/3636026?tisearch=e2e-sitesearch&keymatch=%252525252520user%25252525253A74227#3636026

At line131 in https://git.ti.com/cgit/ti-u-boot/ti-u-boot/tree/arch/arm/mach-omap2/am33xx/ddr.c

there is the following codes and comment

      /* Wait 1ms because of L3 timeout error */

           udelay(1000);

Why this delay is required?

I ask it because, I cannot find such kind of delay at bootloader of 「AM335X_StarterWare_02_00_01_01」

Thanks and Best regards,

HaTa