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([2600:8803:e7e4:500:bd39:740e:f70f:5f7d]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7cfdf2b57e2sm2440834a34.27.2026.01.16.14.43.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 16 Jan 2026 14:43:14 -0800 (PST) Message-ID: Date: Fri, 16 Jan 2026 16:43:13 -0600 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 7/9] spi: axi-spi-engine: support SPI_MULTI_LANE_MODE_STRIPE To: Jonathan Cameron Cc: Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Marcelo Schmitt , Michael Hennerich , =?UTF-8?Q?Nuno_S=C3=A1?= , Andy Shevchenko , Sean Anderson , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org References: <20260112-spi-add-multi-bus-support-v5-0-295f4f09f6ba@baylibre.com> <20260112-spi-add-multi-bus-support-v5-7-295f4f09f6ba@baylibre.com> <20260114091617.170a9757@jic23-huawei> Content-Language: en-US From: David Lechner In-Reply-To: <20260114091617.170a9757@jic23-huawei> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 1/14/26 3:16 AM, Jonathan Cameron wrote: > On Mon, 12 Jan 2026 11:45:25 -0600 > David Lechner wrote: > >> Add support for SPI_MULTI_LANE_MODE_STRIPE to the AXI SPI engine driver. >> >> The v2.0.0 version of the AXI SPI Engine IP core supports multiple >> lanes. This can be used with SPI_MULTI_LANE_MODE_STRIPE to support >> reading from simultaneous sampling ADCs that have a separate SDO line >> for each analog channel. This allows reading all channels at the same >> time to increase throughput. >> >> Reviewed-by: Marcelo Schmitt >> Signed-off-by: David Lechner > Hi David, > > I kind of hope ADI make their versions backwards compatible (or at > least try to) so the version check might be a bit over the top. FWIW, I was the one that actually pushed for the FPGA IP block major version change. There wasn't a default value for the new bit fields that worked in every case, so there wasn't a way to make it fully backwards compatible with older drivers that don't set those bits. > > Anyhow, not my problem and the code is nice and clean. > > Reviewed-by: Jonathan Cameron