AM3703 sys_clkout2

Other Parts Discussed in Thread: AM3703

Dear,

  Here I get an issue to enable clock output from sys_clkout2 on a customerized AM3703 module.

The operation system is WINCE6.

First I change the pad configuration on bsp_padcfg.h, and use this configuration in eboot.

    PAD_ENTRY(SYS_CLKOUT2,         INPUT_DISABLED |  PULL_RESISTOR_DISABLED | MUXMODE(0))      /* GPIO 186  : sys_clkout2*/    \

Then the procedure below has been implemented in eboot
    OMAP_PRCM_CLOCK_CONTROL_CM_REGS* pCmRegs = OALPAtoUA(OMAP_PRCM_CLOCK_CONTROL_CM_REGS_PA);
    OMAP_PRCM_GLOBAL_CM_REGS* pPolRegs = OALPAtoUA(OMAP_PRCM_GLOBAL_CM_REGS_PA);
    REG32 cmreg = INREG32(&pCmRegs->CM_CLKOUT_CTRL);
    cmreg &= ~(1<<7); //mask CLKOUT2_EN
    cmreg &= ~(3<<0); //mask CLKOUT2SOURCE
    cmreg |= (1<<0); //enable sys_clkout2 output
    cmreg |= (1<<7); //use cm_sys_clk as clock source
    SETREG32(&pCmRegs->CM_CLKOUT_CTRL, cmreg);
    SETREG32(&pPolRegs->CM_POLCTRL, 1); //gated high when inactive

I don't see clock output after the setting is applied.

Is anything procedure I have missed?

Thanks in advance.

Angus