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DM8168 clock settings

Other Parts Discussed in Thread: TMS320DM8168

 

After datasheet update for TMS320DM8168 we found that frequency values for TMS320DM8168CCGY--

chancged from 1.0-GHz ARM, 800-MHz DSP to 930-MHz ARM, 750-MHz DSP.

Currently we use the following frequency values:

ARM clk:      1000 MHz

DDR clk:       796 MHz

HDVICP ckl:    600 MHz

L3 fast clk:   560 MHz

HDVPSS clk:    280MHz

Ducati M3 clk: 280 MHz

DSP ckl:       800 MHz

 

Our values in clocks_ti816x.h:

/* Main PLL */

#define MAIN_N   56

#define MAIN_P   0x1

#define MAIN_INTFREQ1  15

#define MAIN_FRACFREQ1  0x1EB851

#define MAIN_MDIV1  0x1

#define MAIN_INTFREQ2  12

#define MAIN_FRACFREQ2  0x189374

#define MAIN_MDIV2  0x1

/* For IVAHD @ 600MHz*/

#define MAIN_INTFREQ3  10

#define MAIN_FRACFREQ3  0x147AE1

#define MAIN_MDIV3  0x2

#define MAIN_INTFREQ4  10

#define MAIN_FRACFREQ4  0xCCCCCC

#define MAIN_MDIV4  0x2

#define MAIN_INTFREQ5  12

#define MAIN_FRACFREQ5  0x189374

#define MAIN_MDIV5  8

#define MAIN_MDIV6  0x3F

#define MAIN_MDIV7  0x4

 

What values are recommended to set 930 for ARM and 750 for DSP ?

Do we have influence if we change ARM and DSP frequency to the other frequency values ?

Can we use the former values for DDR and the other clocks ?

Best regards Holger