Re: FT232H bandwidth

2014-06-01 Thread Warren Taylor
Simon Gornall writes: > > Hi there, > > I'm in the process of designing a VME=>USB interface, and I wanted to use the FT232H, but according to FTDI, > the throughput on Linux is only ~9MBytes/sec using current kernels. In the past, it was ~40MBytes/sec. > Sadly my Arm board is delivered runni

Re: FT232H bandwidth

2013-08-21 Thread Greg KH
On Wed, Aug 21, 2013 at 11:07:49AM -0700, Simon Gornall wrote: > >> I was hoping there was a "we changed it because..." reason. If you > >> were unaware of the problem, I guess there's little you can do to fix > >> it :) > >> > >> I'm not sure if this helps, but the driver they're talking about is

Re: FT232H bandwidth

2013-08-21 Thread Simon Gornall
On Aug 21, 2013, at 11:01 AM, Greg KH wrote: > On Wed, Aug 21, 2013 at 10:53:32AM -0700, Simon Gornall wrote: >> >> On Aug 21, 2013, at 10:39 AM, Greg KH wrote: >> >>> On Wed, Aug 21, 2013 at 10:36:18AM -0700, Simon Gornall wrote: Hi there, I'm in the process of designing a VM

Re: FT232H bandwidth

2013-08-21 Thread Greg KH
On Wed, Aug 21, 2013 at 10:53:32AM -0700, Simon Gornall wrote: > > On Aug 21, 2013, at 10:39 AM, Greg KH wrote: > > > On Wed, Aug 21, 2013 at 10:36:18AM -0700, Simon Gornall wrote: > >> Hi there, > >> > >> I'm in the process of designing a VME=>USB interface, and I wanted to > >> use the FT232H

Re: FT232H bandwidth

2013-08-21 Thread Simon Gornall
On Aug 21, 2013, at 10:39 AM, Greg KH wrote: > On Wed, Aug 21, 2013 at 10:36:18AM -0700, Simon Gornall wrote: >> Hi there, >> >> I'm in the process of designing a VME=>USB interface, and I wanted to >> use the FT232H, but according to FTDI, the throughput on Linux is only >> ~9MBytes/sec using

Re: FT232H bandwidth

2013-08-21 Thread Greg KH
On Wed, Aug 21, 2013 at 10:36:18AM -0700, Simon Gornall wrote: > Hi there, > > I'm in the process of designing a VME=>USB interface, and I wanted to > use the FT232H, but according to FTDI, the throughput on Linux is only > ~9MBytes/sec using current kernels. In the past, it was ~40MBytes/sec. > S

FT232H bandwidth

2013-08-21 Thread Simon Gornall
Hi there, I'm in the process of designing a VME=>USB interface, and I wanted to use the FT232H, but according to FTDI, the throughput on Linux is only ~9MBytes/sec using current kernels. In the past, it was ~40MBytes/sec. Sadly my Arm board is delivered running Linux 3.4.29 I don't really want