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[2003:f6:ef02:2700:7684:3ff1:6790:3866]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5c88640fe9asm3469538a12.82.2024.09.30.06.10.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Sep 2024 06:10:50 -0700 (PDT) Message-ID: <6ce76f0a7c503cc800b4795e682f91c8bfc0bb7a.camel@gmail.com> Subject: Re: [PATCH v3 02/10] dt-bindings: iio: dac: axi-dac: add ad3552r axi variant From: Nuno =?ISO-8859-1?Q?S=E1?= To: Angelo Dureghello , Jonathan Cameron Cc: Lars-Peter Clausen , Michael Hennerich , Nuno Sa , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Olivier Moysan , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, dlechner@baylibre.com, Mark Brown , linux-spi@vger.kernel.org Date: Mon, 30 Sep 2024 15:15:03 +0200 In-Reply-To: References: <20240919-wip-bl-ad3552r-axi-v0-iio-testing-v3-0-a17b9b3d05d9@baylibre.com> <20240919-wip-bl-ad3552r-axi-v0-iio-testing-v3-2-a17b9b3d05d9@baylibre.com> <20240929114606.7500ba7e@jic23-huawei> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.0 Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Mon, 2024-09-30 at 14:52 +0200, Angelo Dureghello wrote: > On 29.09.2024 11:46, Jonathan Cameron wrote: > > On Thu, 19 Sep 2024 11:19:58 +0200 > > Angelo Dureghello wrote: > >=20 > > > From: Angelo Dureghello > > >=20 > > > Add a new compatible and related bindigns for the fpga-based > > > "ad3552r" AXI IP core, a variant of the generic AXI DAC IP. > > >=20 > > > The AXI "ad3552r" IP is a very similar HDL (fpga) variant of the > > > generic AXI "DAC" IP, intended to control ad3552r and similar chips, > > > mainly to reach high speed transfer rates using an additional QSPI > >=20 > > I'd drop the word additional as I assume it is an 'either/or' situation > > for the interfaces. > >=20 > > Do we have other devices using this same IP?=C2=A0 I.e. does it make > > sense to provide a more generic compatible as a fallback for this one > > so that other devices would work without the need for explicit support? > >=20 > >=20 > no, actually ad3552r-axi is only interfacing to ad3552r. > I could eventually set adi,axi-dac-9.1.b as a fallback, since it > is the "gneric" AXI implementation. Yes but the generic IP does not have this spi bus implementation so the dev= ice would be unusable (unless I'm missing something) - Nuno S=C3=A1