66AK2H12: How to know DSP operating frequency

Hi, Snehal,

in U-boot prompt, type "getclk" it would show you the usage of it. 

Rex

Hi Rex,

Its gives the following,

-Boot
=> getclk
getclk - get clock rate

Usage:
getclk <clk index>
The indexes for clocks:
0 - core_pll_clk
1 - pass_pll_clk
2 - tetris_pll_clk
3 - ddr3a_pll_clk
4 - ddr3b_pll_clk
5 - sys_clk0_clk
6 - sys_clk0_1_clk
7 - sys_clk0_2_clk
8 - sys_clk0_3_clk
9 - sys_clk0_4_clk
10 - sys_clk0_6_clk
11 - sys_clk0_8_clk
12 - sys_clk0_12_clk
13 - sys_clk0_24_clk
14 - sys_clk1_clk
15 - sys_clk1_3_clk
16 - sys_clk1_4_clk
17 - sys_clk1_6_clk
18 - sys_clk1_12_clk
19 - sys_clk2_clk
20 - sys_clk3_clk
21 - uart_pll_clk

is core_pll_clk is DSP operating frequency?

its gives following

=> getclk 0
clock index [0] - frequency 1200000000
=>

From the board file in u-boot board_k2hk.c

What is the significance of alt_core_clk ?

[u-boot code]

unsigned int get_external_clk(u32 clk)
{
unsigned int clk_freq;

switch (clk) {
case sys_clk:
clk_freq = 122880000;
break;
case alt_core_clk:
clk_freq = 125000000;
break;

...

Regards,

Snehal

Hi, Snehal,

Yes, the core_pll_clk is the one. type "getclk 0" you should see the frequency for DSP.. I don't know what alt_core_clk is for on top of my head. I'll let you trace the code to see what that is used for. I will have to trace it myself too.

Rex