AM3354: 36MHz SPI clock

Hi,

The McSPI functional clock is 48MHz, generated by the fixed /4 divider in the PRCM from the 192MHz Peripheral PLL output clock (AM335x TRM Rev. P section 8.1.6.8). To change to 36MHz, you will need to set the Peripheral PLL to 144MHz, which will affect the proper functioning of all other peripherals clocked by it. In short, this is not possible.