> But 125 kHz is a bad default (and my math and datasheet show a default
> of 24 MHz / 256 = 93.75 kHz... Khali where did you get 125 kHz?)
>From the datasheet !
Power on default [7:0] = 0000,0001 b
Bit Name Read/Write Description
7 PWM_CLK_SEL2 Read/Write PWM 2 Input Clock Select. This bit select Fan 2 input
clock to pre-scale divider.
0: 1 MHz
1: 125 KHz
6-0 PRE_SCALE2[6:0] Read/Write Fan 2 Input Clock Pre-Scale. The divider of input
clock is the number defined by pre-scale. Thus, writing
0 transfers the input clock directly to counter. The
maximum divider is 128 (7Fh).
01h : divider is 1
02h : divider is 2
03h : divider is 3
PWM frequency = (Input Clock / Pre-scale) / 256
Now it seems that I read it wrong, the default would be 1MHz not 125kHz.
Where do YOU get your 93.75 kHz from? :)
--
Jean Delvare
http://khali.linux-fr.org/
