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[87.197.115.191]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a0280c8bb0sm367261625e9.11.2026.10.05.03.46.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Oct 2026 03:46:49 -0700 (PDT) From: Robert Bozik To: sakari.ailus@linux.intel.com Cc: linux-media@vger.kernel.org, mchehab@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, antti.laakso@linux.intel.com Subject: Re: [PATCH v4 2/3] media: i2c: Add driver for OmniVision OV32C4 Date: Mon, 5 Oct 2026 12:46:48 +0200 Message-ID: <20261005104648.16362-1-robertbozik@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: <20261005071010.7191-1-robertbozik@gmail.com> <20261005071010.7191-3-robertbozik@gmail.com> <20261005101447.15264-1-robertbozik@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Sakari, On Mon, Oct 05, 2026 at 01:36:00PM +0300, Sakari Ailus wrote: > > Agreed, that is better. For v5 I'd give ipu-bridge a small table of > > sensors whose second I2C address belongs to the sensor itself, > > { "OVTI32C4", 0x3e }; for a sensor in it the bridge adds reg = > aon> to the sensor's software node and does not instantiate the VCM > > from SSDB - so the no-VCM exception of patch 3 folds into the same > > table. The driver reads reg with device_property_read_u32_array() on > > both DT and ACPI and the _CRS walk goes away with its CONFIG_ACPI > > guard. The property fits into the existing dev_properties slot that > > lens-focus uses when there is a VCM, so no change to the header. > > You shouldn't assume there won't be a VCM; please do add an array entry for > reg instead. OK - a separate entry for reg, independent of the VCM. For the VCM I won't assume either way then. The bridge instantiates it from the second I2C resource of _CRS, so v5 skips it only when that resource's address is the sensor's AON address from the table, as it is on this machine; a module with a real VCM there is handled as before. Thanks, Robert