linux-kernel - Re: [PATCH v2 0/9] iio: add support for the ad3552r AXI DAC IP

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Message-ID: <dc0e45c4-3876-4d45-b5dd-60f89c9d09e1@baylibre.com>
Date: Thu, 5 Sep 2024 14:46:53 -0500
From: David Lechner <dlechner@...libre.com>
To: Angelo Dureghello <adureghello@...libre.com>,
 Lars-Peter Clausen <lars@...afoo.de>,
 Michael Hennerich <Michael.Hennerich@...log.com>,
 Nuno Sá <nuno.sa@...log.com>,
 Jonathan Cameron <jic23@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Olivier Moysan <olivier.moysan@...s.st.com>
Cc: linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/9] iio: add support for the ad3552r AXI DAC IP

On 9/5/24 10:17 AM, Angelo Dureghello wrote:
> The serie comes from the previously discussed RFC, that i
> converted to a normal patch from this v2.
> 
> Purpose is to add ad3552r AXI DAC (fpga-based) support.
> 
> The fpga DAC IP has been created to reach the maximum speed
> (33MUPS) supported from the ad3552r. To obtain the maximum
> transfer rate, the custom module has been implemented using
> the QSPI lines in DDR mode, using a dma buffer.
> 
> The design is actually using the DAC backend since the register
> map is the same of the generic DAC IP, except for some customized
> bitfields. For this reason, a new "compatible" has been added
> in adi-axi-dac.c.
> 
> Also, backend has been extended with all the needed functions
> needed for this use case, keeping the names gneric.
> 
> Note: the following patch is actually for linux-iio/testing
> ---
> Changes in v2: 
> - use unsigned int on bus_reg_read/write
> - add a compatible in axi-dac backend for the ad3552r DAC IP
> - minor code alignment fixes
> - fix a return value not checked
> - change devicetree structure setting ad3552r-axi as a backend
>   subnode
> - add synchronous_mode_available in the ABI doc
> 
> Signed-off-by: Angelo Dureghello <adureghello@...libre.com>
> Co-developed-by: David Lechner <dlechner@...libre.com>
> Co-developed-by: Nuno Sá <nuno.sa@...log.com>
> 
We didn't actually write any of the code, so I don't think
Co-developed-by: is the right way to give us credit. But we
can give our Reviewed-by: tags when this is ready to be merged.