[uClinux-dev] cpu requirements for usb2-to-vga

2009-01-14 Thread Andrew Kohlsmith (lists)
Good afternoon, I've been asked about designing a board which can handle three USB2-to-VGA adapters. I would be running X11 and just using the adapters as displays, but I'm unsure about the actual bandwidth requirements for these things. Has anyone used them before? They'd only be displaying

Re: [uClinux-dev] RAM size autodetection

2008-12-09 Thread Andrew Kohlsmith (lists)
On December 9, 2008 05:29:11 am Frédéric DUBOIS wrote: > We plan to double up the SDRAM size of our 5272-based board. It would be > more convenient for us that the kernel automagically detects the size of > the installed RAM instead of managing two different kernels or bootloaders; > it would also

Re: [uClinux-dev] MCF528x interrupts

2008-11-25 Thread Andrew Kohlsmith (lists)
On November 25, 2008 12:39:52 pm Allon Stern wrote: > I have a device driver which works just fine on the pxa270 (2.6.26 > linux) > In trying to get it working on the MCF5282, I find I get a bunch of > interrupts recorded when in reality I should only have one. > I see 44 interrupts instead of 1 (w

Re: [uClinux-dev] RS485 and the standard serial driver - How to command RTS

2008-07-17 Thread Andrew Kohlsmith (lists)
On July 9, 2008 01:06:47 pm Chris Doré wrote: > I've never used MCFUART_UOP_RTS. You have to reset it every time you > transmit? Yes. > In the case of the netarm, you need only set RTSTX once and it will toggle > RTS active/inactive as necessary. It's been over 2 years, but I don't think that t

Re: [uClinux-dev] RS485 and the standard serial driver - How to command RTS

2008-07-09 Thread Andrew Kohlsmith (lists)
On July 8, 2008 11:53:32 am Chris Doré wrote: > I'd probably just add an IOCTL allowing the feature to be enabled/disabled > by an app. You may have to worry about other code touching that register > and wiping out your RTSTX bit, depending on if that code blindly writes > values to the reg or if

Re: [uClinux-dev] RS485 and the standard serial driver - How to command RTS

2008-07-07 Thread Andrew Kohlsmith (lists)
On July 7, 2008 11:41:05 am Daniel Berenguer wrote: > I'm trying to send/receive messages via RS485 using a simple MAX485 IC > connected to a Netarm processor (Digi Connect-ME). The problem is that I > need to enable/disable the transmit option through the UART RTS line but > RTS remains high after

Re: [uClinux-dev] execute in place - yes or no?

2008-04-17 Thread Andrew Kohlsmith (lists)
On April 17, 2008 12:43:37 pm Jamie Lokier wrote: > > Video streaming i would consider a large scale system. Why was a non > > MMU processor selected for a video streaming application? > > Price and availability of a chip that did good video (HDTV even), and > we didn't know the no-MMU penalty at

Re: [uClinux-dev] dist-20070130 for Palm V

2008-03-28 Thread Andrew Kohlsmith (lists)
On March 28, 2008 12:13:57 pm David Harel wrote: > When compiling for 3com (Vendor: 3com, Product to target: Xcopilot) I get: > arch/m68knommu/platform/68328/ints.c:128: error: conflicting types for > 'request_irq' > include/linux/interrupt.h:82: error: previous declaration of > 'request_irq' was h