what is /proc/interrupts /proc/irq/*/spurious mean?

Hi All, i have a board shipped with Linux kernel 2.6.27. i have some problems in interrupts but while i was gathering some info about the interrupts on my board by cat /proc/interrupts CPU0 16: 2525 OpenPIC Level enet_tx 17: 5606 OpenPIC Level enet_rx

Re: Missing some interrupts

wael showair wrote: You cannot really rely on getting the exact same number of edge interrupts that were emitted. At least not unless you have a hard RT system and can guarantee that you'll always dequeue them fast enough. Yes, my system is a hard RT i want to receive all

Missing some interrupts

Hi All, i have a freescale board, that contains MPC8555 processor DSP-core there is a GPIO connecting the DSP-core into an input pin of the OpenPIC of the MPC8555 processor. i test one interrupt from the DSP-core to the MPC8555 processor where i configure this interrupt line to be

Re: Missing some interrupts

Benjamin Herrenschmidt wrote: On Sat, 2009-06-06 at 06:17 -0700, wael showair wrote: Hi All, i have a freescale board, that contains MPC8555 processor DSP-core there is a GPIO connecting the DSP-core into an input pin of the OpenPIC of the MPC8555 processor. i test one interrupt

Re: Missing some interrupts

You cannot really rely on getting the exact same number of edge interrupts that were emitted. At least not unless you have a hard RT system and can guarantee that you'll always dequeue them fast enough. Yes, my system is a hard RT i want to receive all the interrupts that have been

Re: how can i send real-time signal?

Am Fri, 5 Jun 2009 10:41:56 -0700 (PDT) schrieb wael showair showair2...@yahoo.com: My aim is : Each time the DSP-core interrupts the MPC8555 processor, a process in the user space will be informed by the arrival of this each interrupt. You should have a look at drivers/uio... So i decided

how can i send real-time signal?

Hi All, i m using linux-kernel 2.6.27 a board of MPC8555 processor. i have also DSP-core on the same board. My aim is : Each time the DSP-core interrupts the MPC8555 processor, a process in the user space will be informed by the arrival of this each interrupt. So i decided to use sw signals,

is the resolution of do_gettimeofday in usec?

Hi All, i have board that contains MPC8555 processor with linux 2.6.27 ported to it. i want to use an accurate function to measure the time. i searched the kernel code i found several functions but i read that the do_gettimeofday is the most accurate one since it has a timer resolution of usec.

Testing DMA on MPC8555 board

Hi All, i have an evaluation board with MPC8555 processor with kernel 2.6.27 the board contains DMA engine. I want to test the DMA on my board by transferring data from a source to destination. I dont know can i do this using the module of dmatest? i have inserted it but i did not get any sign

Re: using dma engine on MPC8555 processor

-in or not built. is there something i should write in the command line to let fsldma works tests the DMA engine i have on my board. also i want to know the module dmatest,what does it test exactly? can it test the DMA engine or not? thanks for your help wael showair wrote: Hi All, i have

using dma engine on MPC8555 processor

Hi All, i have an evaluation board with MPC8555 processor. linux kernel 2.6.27 i have read the Documentation of my board, i found that it contains DMA engine. i know that there fsldma.c fsldma.h all my target is that i want to test the DMA on my board. i want to transfer data from source to

Re: eth0: Could not attach to PHY

; }; }; }; * Heiko Schocher wrote: Hello wael, wael showair showair2...@yahoo.com wrote: i have a board with MPC8555 processor uboot version 1.1.6 linux kernel 2.6.19-rc5 ltib version: 6.2.2-sv gcc 3.4.3 it boots successfully i want to upgrade my linux kernel

eth0: Could not attach to PHY

Hi All, i have a board with MPC8555 processor uboot version 1.1.6 linux kernel 2.6.19-rc5 ltib version: 6.2.2-sv gcc 3.4.3 it boots successfully i want to upgrade my linux kernel to 2.6.27 i upgraded the following: ltib version 8.1.2-sv gcc 4.1 linux kernel 2.6.27 i kept the uboot with the same

Internal assembler error for instruction icbt

hi All, i have LTIB version 6.2.2 with which i have built linux kernel 2.6.19-rc5 for my board where its processor is MPC8555.i built the kernel Image successfuly without any problems But Now i want to upgrade the linux kernel to 2.6.27 but unfortunately i got the following error:

Re: When do i need to allocate DMA buffer

seems rather portable ! Best regards. -- sj 2009/1/12 wael showair showair2...@yahoo.com: Hi All, i have MPC8555 processor, also i have linux-kernel 2.6.19-rc5 on my board.i want to use the DMA on my board, just a simple example is enough for me but during my reading on how to use

When do i need to allocate DMA buffer

Hi All, i have MPC8555 processor, also i have linux-kernel 2.6.19-rc5 on my board.i want to use the DMA on my board, just a simple example is enough for me but during my reading on how to use the DMA i have some questions: 1. The DMA buffer is always needed for all kind of buses or not? (I think

How to add my device node in the device tree

Hi all, My board processor is MPC8555, it is an AMC board. i want to add a node for my device to the device tree. simply here is the old device tree : *** / { model = MPC8555AMC; compatible = mpc85xx; #address-cells = 1;