Other Parts Discussed in Thread: TIDEP-01002, DRA722, DS90C189-Q1
Hi all experts,
my custom board is based on the TIDEP-01002 EVM board, and SOC is dra722_es, Kernel version is 4.14. my LCD video path is :
SOC -> VOUT2 -> DS90C189-Q1 -> LCD.
GPIO pinmux as following:
vout2_clk is vin2a_fld0 pinmux to M4. the others pinmux be config in mux_data.h in uboot.
i also use omapconf to check the register of CTRL_CORE_PAD_VIN2A_FLD0, the value is 0x000010004, it is correct.
but use oscilloscope to check VOUT2_CLK pin, it is not working. VOUT2_D0~VOUT2_D24 have digital signal. so there is nothing show on the screen.
could any one help me figure out the problem?
best regards!