I modified it to set all HSMC bidir and outputs high.
assign HSMC_TX_D_P = 'b11111111111111111;
assign HSMC_RX_D_P = 'b11111111111111111;
assign HSMC_TX_D_N = 'b11111111111111111;
assign HSMC_RX_D_N = 'b11111111111111111;
assign SMC_CLKIN0 = 1;
assign HSMC_CLKOUT_N1 = 1;
assign HSMC_CLKOUT_N2 = 1;
assign HSMC_CLKOUT_P1 = 1;
assign HSMC_CLKOUT_P2 = 1;
assign HSMC_CLKOUT0 = 1;
And all gave about 2.44V.
When making them all 0 among others, pin
RX_D_N(16) gave 1.72V and
RX_D_N(15) gave 2.11V.
Later today I will try this with my project and post the results