Clock settings

Xiangfu Liu xiangfu at qi-hardware.com
Sun Nov 8 10:57:32 EST 2009


Hi Bas Wijnen

here is some info:
----
root at BenNanoNote:/proc/jz# ls
cgm   emc   imem  ipu   mmc   pmc   udc

root at BenNanoNote:/proc/jz# more cgm
CPPCR          : 0x1b000520
CPCCR          : 0x40632220
PLL            : ON
m:n:o          : 56:2:1
C:H:M:P        : 1:3:3:3
PLL Freq       : 336.00 MHz
CCLK           : 336.00 MHz
HCLK           : 112.00 MHz
MCLK           : 112.00 MHz
PCLK           : 112.00 MHz
LCDCLK         :  84.00 MHz
PIXCLK         : 25846.15 KHz
I2SCLK         :  12.00 MHz
USBCLK         :  12.00 MHz
MSCCLK         :  24.00 MHz
EXTALCLK       :  12.00 MHz
RTCCLK         :   0.03 MHz

root at BenNanoNote:/proc/jz# more emc
SMCR(0-5): 0x00000080 0x094c4400 0x0fff7700 0x0fff7700 0x0fff7700
SACR(0-5): 0x00001cfc 0x000018fc 0x000014fc 0x00000cfc 0x000008fc
DMCR:      0x85aa3211
RTCSR:     0x0083
RTCOR:     0x001f

root at BenNanoNote:/proc/jz# more pmc
Low Power Mode : IDLE
Doze Mode      : off
IPU            : running
DMAC           : running
UHC            : running
UDC            : stopped
LCD            : running
CIM            : running
SADC           : running
MSC            : running
AIC1           : running
AIC2           : running
SSI            : running
I2C            : running
RTC            : running
TCU            : running
UART1          : running
UART0          : running

Bas Wijnen wrote:
> Hi,
> 
> In the Linux source, I don't see any clocks being set up.  Possibly they
> aren't, and the boot values are maintained.  However, since I have some
> trouble with my lcd driver which might be related to the clocks
> settings, I would like someone who has Linux running on the Ben to tell
> me what their clocks are set to.  This info can be found in /proc/cgm.
> While you're at it, please also tell me what's in /proc/emc and
> /proc/pmc.
> 
> Thanks,
> Bas
> 
> 
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