Re: linux booting

On Thu, Feb 18, 2010 at 3:44 AM, Kalpesh Rathod kalpeshrat...@gmail.comwrote: Hi, bootm 0xaddr What is the significance of this address ? Is this has any correlation with lds file ? or i can use any random address ? This is the entry point of the uImage. You can find it by

linux booting

Hi , I have a doubt regarding u-boot command when booting linux bootm 0xaddr What is the significance of this address ? Is this has any correlation with lds file ? or i can use any random address ? Regards, Shankar

frame buffer driver

Hi , I am adding new frame buffer driver for my custom platform and while while registering framebuffer ,[ register_framebuffer() ], the system hangs in the following call, in fbmem.c fb_notifier_call_chain(FB_EVENT_FB_REGISTERED, event); Please kindly advice on potential flaws in my registration

Re: Console Handover

On Thu, Nov 26, 2009 at 2:25 AM, Xiangfu Liu xian...@qi-hardware.comwrote: Hi Shankar what is your kernel command line? there should something like: console=ttyS0,57600n8 in your command line. Hi Xiangfu Liu, Thanks for your help. Here is my command line option. Yes, there is no console

Re: JTAG debugger for MIPS platform

Thanks a lot On Wed, Nov 4, 2009 at 2:44 AM, Daniel (Youngwhan) Song breadn...@gmail.com wrote: I have used Lauterbach, and it seems to work well. Best Regards, Daniel (Youngwhan) Song On Tue, Nov 3, 2009 at 11:34 PM, Shankar Ganesh shankargane...@gmail.comwrote: Hi Friends, I am

JTAG debugger for MIPS platform

Hi Friends, I am new to MIPS Linux. I would like to know the JTAG debuggers used for MIPS platform. Please share your flavour of debuggers used for MIPS linux . PS : Apologies if this query is not relevant to this mailing list. Thanks, Shankar

Re: KHz representation in Linux kernel

only 32000 ticks per second , not 32768 ticks 2009/9/30 Shankar Ganesh shankargane...@gmail.com: Hi all, In linux kernel, all the places i found ,for ex 32KHz clock is represented as 32768 Hz, not as 32 x 1000 Hz . Could you please help to understand why 2 ^ x is used instead

Re: KHz representation in Linux kernel

The 32768 Hz is a special value used for Real Time Clocks (RTCs). Check it out here: http://en.wikipedia.org/wiki/Quartz_clock#Mechanism Thanks a lot . Regards, Shankar

KHz representation in Linux kernel

Hi all, In linux kernel, all the places i found ,for ex 32KHz clock is represented as 32768 Hz, not as 32 x 1000 Hz . Could you please help to understand why 2 ^ x is used instead of 10 ^ y ? Regards, Shankar

DEVFS permissions

Hi , When we create a node under devfs , hwcdev_class = class_create(THIS_MODULE, DRVNAME); device_create(hwcdev_class, NULL, MKDEV(dev_major, 0), dev, DEVNAME); the node is created with default permission of 600 (root=rw, others nil) , crw root

PMEM device

Hi , I have an use-case where i need to reserve high volume memory buffer - (Video buffer) and it has to be shared between user-space and kernel space. Please help me how to we achieve this using /dev/pmem device ? When registering platform device - PMEM device, we are supplying base

Building Modules

Hi , I am trying to build the driver as module . And my driver file includes a header files placed in current working directory. -- /* driver.c */ #include head.h . And there are macros defined under header

Re: Building Modules - PLEASE IGNORE

Hi, Please ignore as i solved this foolish-issue On Mon, Sep 7, 2009 at 5:21 AM, Shankar Ganesh shankargane...@gmail.comwrote: Hi , I am trying to build the driver as module . And my driver file includes a header files placed in current working directory

Re: Building Modules

On Mon, Sep 7, 2009 at 5:44 AM, Mulyadi Santosa mulyadi.sant...@gmail.comwrote: On Mon, Sep 7, 2009 at 4:21 PM, Shankar Ganeshshankargane...@gmail.com wrote: Hi , I am trying to build the driver as module . And my driver file includes a header files placed in current working

Non-blocking IO

Hi Friends, I have an interrupt handler in my driver which is supposed to wake-up/intimate user process to proceed . How do Linux supports this mechanism ? I have a choice of using select/poll in user space and implementing poll fops in my driver. Is there any alternative better approach

error in sysfs node create

Hi Friends , When the driver try to create node under sysfs during boot-up , i am getting following error. sysfs: duplicate filename '254:0' can not be created . Can you help me out to resolve this error ? Trace attached below . Thanks, Shankar [ cut here ] WARNING:

POLL in char drivers

Hi , I have a doubt regarding poll function in char driver . Let us consider following code -- static unsigned int random_poll(struct file *file, poll_table * wait) { unsigned int mask; * poll_wait(file,

Re: POLL in char drivers

On Thu, Aug 13, 2009 at 5:23 PM, Daniel Baluta daniel.bal...@gmail.comwrote: On Thu, Aug 13, 2009 at 2:17 PM, Shankar Ganeshshankargane...@gmail.com wrote: Hi , I have a doubt regarding poll function in char driver . Let us consider following code