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([2600:8803:e7e4:500:3ad0:4082:8242:2d72]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7e944007d74sm1994044a34.5.2026.06.20.08.55.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 20 Jun 2026 08:55:07 -0700 (PDT) Message-ID: <1d4092c4-5d28-4f92-96a5-c337bfd27093@baylibre.com> Date: Sat, 20 Jun 2026 10:55:06 -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 RFC 2/3] dt-bindings: iio: adc: Add excitation current sources properties To: Kurt Borja , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: =?UTF-8?Q?Nuno_S=C3=A1?= , Andy Shevchenko , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260618-new-channel-props-v1-0-963c1b5cf40a@gmail.com> <20260618-new-channel-props-v1-2-963c1b5cf40a@gmail.com> <073b0a89-65af-4a21-837d-851d35e3e294@baylibre.com> Content-Language: en-US From: David Lechner In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 6/19/26 11:44 AM, Kurt Borja wrote: > On Fri Jun 19, 2026 at 9:27 AM -05, David Lechner wrote: >> On 6/18/26 7:33 PM, Kurt Borja wrote: >>> Some ADCs incorporate current sources that provide excitation current to >>> resistive temperature devices (RTDs), thermistors diodes and other >>> resistive sensors that require constant current biasing. >>> >>> The maxItems constraint of 16 is arbitrary but should be big enough for >>> most devices. >> >> I wouldn't put an arbitrary limit here. The bindings that include it >> can extend it to add a limit that makes sense instead. > > I agree. > > This was partly a misunderstanding. I thought -microamp properties fall > back to uint32 not uint32-array but it's the other way around right? > Standard units are uint32-array. Defined in [1]. [1]: https://github.com/devicetree-org/dt-schema/blob/main/dtschema/schemas/property-units.yaml