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([2600:8803:e7e4:500:1cf0:fc72:ac61:29db]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7f41c0f4a10sm4330412a34.22.2026.08.18.08.02.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 18 Aug 2026 08:02:51 -0700 (PDT) Message-ID: <9841fd2e-434f-48f3-90c1-d62718d6d4d2@baylibre.com> Date: Tue, 18 Aug 2026 10:02:50 -0500 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 v3 1/6] dt-bindings: iio: adc: ad7768-1: Document multidevice support To: Jonathan Santos , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: nuno.sa@analog.com, michael.hennerich@analog.com, broonie@kernel.org, jonath4nns@gmail.com, marcelo.schmitt1@gmail.com, andriy.shevchenko@intel.com References: Content-Language: en-US From: David Lechner In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 8/17/26 6:32 PM, Jonathan Santos wrote: > The AD7768-1 family supports aggregating up to four devices on a single > SPI controller, with each device occupying a dedicated CS line and a > single data lane. > > Extend the `reg` property to accept up to 4 entries (one per device). > > Add `spi-rx-bus-width` property to declare the per-device lane count. > Since each lane is bound to one CS, the number of entries must match > `reg`. Make it required when `reg` has more than one entry. > I don't see why we should have to require the spi-rx-bus-width property. It seems logical that if it is not present, then we would assume one lane per CS. This is already how bindings work. For example, adi,ad4080 and ge,achc have multiple CS lines and don't require any bus width properties.