topic Re: Problem setting SRDS registers in PowerQUICC Processors

Problem setting SRDS registers

carlessilva — Wed, 27 May 2015 11:06:13 GMT

I'm trying to use the SATA devices in the MPC8379 evalutaion board. I'm having problems while updating the SRDS registers so it's programmed to use SATA interface.

I'm trying to set the following values:

SRDSCR0: 0x1100CC30

SRDSCR1: 0x00000040

SRDSCR2: 0x00001414

SRDSCR3: 0x15150528

SRDSCR4: 0x40000808

However this registers are always with the reset values. Should I do something else before being able to edit those registers?

Re: Problem setting SRDS registers

Pavel — Thu, 28 May 2015 05:42:34 GMT

Look at the Section 19.4 of the MPC8379 Reference Manual. This Section contains command sequence for SerDes and PHY initialization and Reset.

Test your board using this command sequence.

Have a great day,
Pavel

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Re: Problem setting SRDS registers

carlessilva — Thu, 28 May 2015 10:40:44 GMT

Pavel,

thanks for your response. This is exactly the sequence I'm following but still SATA device's are not working. I'm following the code I'm using in the MPC8315, adding the initialization of the SerDes PHY.

Any clue in what the problem may be?