From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: "Martin Povišer" <povik+lin@cutebit.org>,
"Vinod Koul" <vkoul@kernel.org>,
"Rob Herring" <robh+dt@kernel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Conor Dooley" <conor+dt@kernel.org>
Cc: asahi@lists.linux.dev, dmaengine@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/2] Apple SIO driver
Date: Wed, 12 Jul 2023 21:42:26 +0200 [thread overview]
Message-ID: <f4c19365-4006-50f7-6c4a-754c2a87c8ca@linaro.org> (raw)
In-Reply-To: <20230712133806.4450-1-povik+lin@cutebit.org>
On 12/07/2023 15:38, Martin Povišer wrote:
> Hi all,
>
> see attached a driver for the SIO coprocessor found on recent Apple
> SoCs. This coprocessor provides general DMA services, it can feed
> many peripherals but so far it seems it will only be useful for
> audio output over HDMI/DisplayPort. So the driver here only supports
> the DMA_CYCLIC mode of transactions with the focus being on audio.
> There's a downstream prototype ALSA driver the DMA driver is being
> tested against.
>
> Some of the boilerplate code in implementing the dmaengine interface
> was lifted from apple-admac.c. Among other things these two drivers
> have in common that they implement the DMA_CYCLIC regime on top of
> hardware/coprocessor layer supporting linear transactions only.
>
> The binding schema saw two RFC rounds before and has a reviewed-by
> from Rob.
> https://lore.kernel.org/asahi/167693643966.613996.10372170526471864080.robh@kernel.org
Thank you for explanation. Then this is v3, not v1.
No need for resending, but if it happens, consider naming it v4. :)
Best regards,
Krzysztof
prev parent reply other threads:[~2023-07-12 19:42 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-12 13:38 [PATCH 0/2] Apple SIO driver Martin Povišer
2023-07-12 13:38 ` [PATCH 1/2] dt-bindings: dma: apple,sio: Add schema Martin Povišer
2023-07-12 13:38 ` [PATCH 2/2] dmaengine: apple-sio: Add Apple SIO driver Martin Povišer
2023-08-01 18:14 ` Vinod Koul
2023-08-01 21:55 ` Martin Povišer
2023-08-03 8:32 ` Martin Povišer
2023-08-03 11:34 ` Vinod Koul
2023-08-24 15:25 ` Martin Povišer
2023-08-03 11:25 ` Vinod Koul
2023-08-24 15:34 ` Martin Povišer
2023-07-12 19:42 ` Krzysztof Kozlowski [this message]
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