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From: Peter Ujfalusi <peter.ujfalusi@ti.com>
To: Rob Herring <robh@kernel.org>
Cc: <vkoul@kernel.org>, <dan.j.williams@intel.com>,
	<dmaengine@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<linux-omap@vger.kernel.org>
Subject: Re: [PATCH 4/5] dt-bindings: dma: ti-edma: Add option for reserved channel ranges
Date: Fri, 30 Aug 2019 08:37:33 +0300
Message-ID: <a4c5688b-cbeb-5059-5351-11d9ae1b25d5@ti.com> (raw)
In-Reply-To: <20190829224728.GA1198@bogus>

Rob,

On 30/08/2019 1.47, Rob Herring wrote:
> On Fri, Aug 23, 2019 at 03:56:17PM +0300, Peter Ujfalusi wrote:
>> Similarly to paRAM slots, channels can be used by other cores.
>>
>> Add optional property to configure the reserved channel ranges.
>>
>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
>> ---
>>  Documentation/devicetree/bindings/dma/ti-edma.txt | 5 +++++
>>  1 file changed, 5 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/dma/ti-edma.txt b/Documentation/devicetree/bindings/dma/ti-edma.txt
>> index 4bbc94d829c8..1198682ada99 100644
>> --- a/Documentation/devicetree/bindings/dma/ti-edma.txt
>> +++ b/Documentation/devicetree/bindings/dma/ti-edma.txt
>> @@ -42,6 +42,9 @@ Optional properties:
>>  - ti,edma-reserved-slot-ranges: PaRAM slot ranges which should not be used by
>>  		the driver, they are allocated to be used by for example the
>>  		DSP. See example.
>> +- ti,edma-reserved-chan-ranges: channel ranges which should not be used by
>> +		the driver, they are allocated to be used by for example the
>> +		DSP. See example.
> 
> Based on the other thread, I think extending dma-channel-mask to a 
> uint32-array makes sense here.

Yes, that is the reason I have asked on that and I'm in progress of
converting the edma driver to use the dma-channel-mask.
Just need to do some shuffling in the driver to get the mask in a form
usable by the driver.

I'll send an updated series early next week.

- Péter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

  reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-23 12:56 [PATCH 0/5] dmaengine: ti: edma: Multicore usage related fixes Peter Ujfalusi
2019-08-23 12:56 ` [PATCH 1/5] dmaengine: ti: edma: Do not reset reserved paRAM slots Peter Ujfalusi
2019-08-23 12:56 ` [PATCH 2/5] dmaengine: ti: edma: Only reset region0 access registers Peter Ujfalusi
2019-08-23 12:56 ` [PATCH 3/5] dmaengine: ti: edma: Use bitmap_set() instead of open coded edma_set_bits() Peter Ujfalusi
2019-08-23 12:56 ` [PATCH 4/5] dt-bindings: dma: ti-edma: Add option for reserved channel ranges Peter Ujfalusi
2019-08-29 22:47   ` Rob Herring
2019-08-30  5:37     ` Peter Ujfalusi [this message]
2019-09-03 10:19       ` Peter Ujfalusi
2019-09-06 13:10         ` Rob Herring
2019-08-23 12:56 ` [PATCH 5/5] dmaengine: ti: edma: Add support for handling reserved channels Peter Ujfalusi
2019-09-04  9:49 ` [PATCH 0/5] dmaengine: ti: edma: Multicore usage related fixes Vinod Koul

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