On 09/11/2020 14.23, Vinod Koul wrote:
> HI Peter,
>
> On 09-11-20, 14:09, Peter Ujfalusi wrote:
>> Hi Vinod,
>>
>> On 09/11/2020 13.45, Vinod Koul wrote:
Without a channel number I can not do anything.
It is close to a chicken and egg problem.
>>>
>>> We get 'channel' in xlate, so
HI Peter,
On 09-11-20, 14:09, Peter Ujfalusi wrote:
> Hi Vinod,
>
> On 09/11/2020 13.45, Vinod Koul wrote:
> >> Without a channel number I can not do anything.
> >> It is close to a chicken and egg problem.
> >
> > We get 'channel' in xlate, so wont that help? I think I am still missing
> >
Hi Vinod,
On 09/11/2020 13.45, Vinod Koul wrote:
>> Without a channel number I can not do anything.
>> It is close to a chicken and egg problem.
>
> We get 'channel' in xlate, so wont that help? I think I am still missing
> something here :(
Yes, we get channel in xlate, but we get the channel
Hey Peter,
On 28-10-20, 11:56, Peter Ujfalusi wrote:
> Hi Vinod,
>
> On 28/10/2020 7.55, Vinod Koul wrote:
>
> >> To summarize:
> >> In of_dma_route_allocate() the router does not yet know the channel we
> >> are going to get.
> >> In of_dma_xlate() the DMA driver does not yet know if the
Hi Vinod,
On 28/10/2020 7.55, Vinod Koul wrote:
>> To summarize:
>> In of_dma_route_allocate() the router does not yet know the channel we
>> are going to get.
>> In of_dma_xlate() the DMA driver does not yet know if the channel will
>> use router or not.
>> I need to tell the router the event
On 08-10-20, 09:41, Peter Ujfalusi wrote:
>
>
> On 07/10/2020 18.55, Vinod Koul wrote:
> > On 07-10-20, 11:08, Peter Ujfalusi wrote:
> >
> >> Not really. In DT an event triggered channel can be requested via router
> >> (when this is used) for example:
> >>
> >> dmas = <_l2g a b c>;
> >> a -
On 07/10/2020 8.44, Vinod Koul wrote:
> Hi Peter,
>
> On 30-09-20, 12:13, Peter Ujfalusi wrote:
>> Additional configuration for the DMA event router might be needed for a
>> channel which can not be done during device_alloc_chan_resources callback
>> since the router information is not yet
On 07/10/2020 18.55, Vinod Koul wrote:
> On 07-10-20, 11:08, Peter Ujfalusi wrote:
>
>> Not really. In DT an event triggered channel can be requested via router
>> (when this is used) for example:
>>
>> dmas = <_l2g a b c>;
>> a - the input number of the DMA request in l2g
>> b - edge or level
On 07-10-20, 11:08, Peter Ujfalusi wrote:
> Not really. In DT an event triggered channel can be requested via router
> (when this is used) for example:
>
> dmas = <_l2g a b c>;
> a - the input number of the DMA request in l2g
> b - edge or level trigger to be selected
> c - ASEL number for the
Hi Peter,
On 30-09-20, 12:13, Peter Ujfalusi wrote:
> Additional configuration for the DMA event router might be needed for a
> channel which can not be done during device_alloc_chan_resources callback
> since the router information is not yet present for the drivers.
>
> If there is a need for
Additional configuration for the DMA event router might be needed for a
channel which can not be done during device_alloc_chan_resources callback
since the router information is not yet present for the drivers.
If there is a need for additional configuration for the channel if DMA
router is in
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