Hello,
We are using the pin U16 for RMII. The DTS file generated from the syscfg tool mentioned that to use this pin for this function, the bit 0 of register SMA2 should be set to 1. It also has a code snipped to do so in the board_init function. We added the code in our board.c
When we boot into u-boot and check the value of this register by using the below command:
md 0x44e11320 1
we see that the bit 0 is still 0.
What are we missing here?
DO we need to add anything to the DTS or the pinmux?
I added the below code in board_init function, but this did not help either:
static struct module_pin_mux rmii1_pin_mux[] = {
{OFFSET(gpmc_a9), MODE(3) },
{-1},
}
int board_init(void)
{
...
* This is to fix
* the issue with RMII refclock not available. ERRATA
*/
writel(0xF6, GMII_SEL_REG_ADDR);
/*
* Selection of Pin U16 for gpmc_a9.rmii2_crs_dv requires
* an additional register sma2 setting in the Control Module.
*/
writel(0x01, SMA2_REG_ADDR);
configure_module_pin_mux(rmii1_pin_mux);
return 0;
}
Appreciate any help.
Regards
