On Tue, Mar 30, 2010 at 4:14 AM, Feng Tang wrote:
> On Mon, 29 Mar 2010 20:55:51 +0800
> DW controller driver don't need max3110 driver to use big spi transfer,
> the early version of our max3110 is also one word per spi transfer mode,
> and the 2 drivers work fine, though the rx performance is n
On Tue, 30 Mar 2010 14:49:57 +0800
christian pellegrin wrote:
> On Tue, Mar 30, 2010 at 4:14 AM, Feng Tang
> wrote:
> > On Mon, 29 Mar 2010 20:55:51 +0800
> >
> > When the HW works at 230400 bps, when we copy bulk data to the
> > console, max3110 will probably receive about 20K characters, so th
On Tue, Mar 30, 2010 at 9:19 AM, Feng Tang wrote:
> No words in my last email suggested to use dynamic SPI clock speed,
> I admited that method is brutal and not mature when my driver was
> reviewed. In early version of our 3110 driver, we don't use dynamic
> clock speed, but the maxim clock supp
> 1) latency on rx chars becomes very high because we can process
> incoming transfers only after a full 8 byte (or whatever the spi
> transfer dimension is). For a 9600 this is too much.
There I would partly disagree. Fixing the spi driver clearly makes sense
but the serial driver should be batch
[Self]
> This is a fourth iteration of the PrimeCell DMA API on top of the
> generic DMA devices (sibling to the DMA engine). It's based on
> the suggestion from Russell to try and define a specific extension
> subset for DMA devices.
Russell & Grant can you give some hint on the direction you
se
On Tue, Mar 30, 2010 at 10:46 AM, Alan Cox wrote:
>
> There I would partly disagree. Fixing the spi driver clearly makes sense
> but the serial driver should be batching better. Is there a reason the
> driver couldn't adjust the size based upon the tty speed when getting a
> termios request ?
Jus
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On Tue, Mar 30, 2010 at 6:03 AM, christian pellegrin wrote:
> On Tue, Mar 30, 2010 at 10:46 AM, Alan Cox wrote:
>>
>> There I would partly disagree. Fixing the spi driver clearly makes sense
>> but the serial driver should be batching better. Is there a reason the
>> driver couldn't adjust the si
