Hi,
I'm currently working on some functions checking the status of the used hardware-interfaces. I already achieved to spin an attached SSD up, read and write one sector and to execute DEVICE DIAGNOSTIC and IDENTIFY DEVICE. This is sufficient for me in any cases a device is attached to the SATA-port.
Additionally it is also necessary to check the SATA interface without the need of any SATA-device attached to the port. So for this hardware test I detach the SSD, ran some hardware inits (pinmuxConfig, GIOP_setDir, GPIO_setOutput, pllInit, setFocedmode, enable_LPSC_SATACLK, power_LJCB_RCD) and tried to set the NEALB bit of the BISTCR register. But unfortunately I can change any element of BISTCR without NEALB (NEALB simply doesn’t change from ‘0’ -> ‘1’). I already tried to put the device to the SLUMBER / PARTIAL mode before writing NEALB but this was also useless. Is there any additional condition which protects the NEALB bit? What do I have to do so that I can set the NEALB bit respectively performing a near-end analog loopback?
Further information:
I use the LOGICPD board wit OMAP-L138
the CCS5 Version: 5.1.0.07001
and the XDS100 Ver 2.0
The code of the the hardware-inits befor writing to NEALB:
// clear the buffer enable to start the sata clock.
EVMOMAPL138_pinmuxConfig(PINMUX_GPIO_BUFF_OE_REG, PINMUX_GPIO_BUFF_OE_MASK, PINMUX_GPIO_BUFF_OE_VAL);
GPIO_setDir(GPIO_BUFF_OE_BANK, GPIO_BUFF_OE_PIN, GPIO_OUTPUT);
GPIO_setOutput(GPIO_BUFF_OE_BANK, GPIO_BUFF_OE_PIN, OUTPUT_LOW);
//Used by DV only and doing PLL initalization
pllInit();
// setting force mode to bypass clock acknowledge from module
pscRegs->MDCTL[LPSC_SATA] |= CSL_PSC_MDCTL_FORCE_MASK;
//Enable the LPSC
//Enable SATA Clk
EVMOMAPL138_lpscTransition(PSC1, DOMAIN0, LPSC_SATA, PSC_ENABLE);
// powerup LJCB & RCD modules
*(Uint32 *)SATACLK_PWRDN=0x0;
Thanks in advance
Stefan Hittmeyer
