The device tree overlay for the IMX219 sensor requires three voltage supplies to be defined: VANA (analog), VDIG (digital core), and VDDL (digital I/O). Add the corresponding voltage supply definitions to avoid dtbs_check warnings.
Fixes: f767eb918096 ("arm64: dts: ti: k3-j721e-sk: Add overlay for IMX219") Cc: stable@vger.kernel.org Signed-off-by: Yemike Abhilash Chandra y-abhilashchandra@ti.com --- .../dts/ti/k3-j721e-sk-csi2-dual-imx219.dtso | 33 +++++++++++++++++++ 1 file changed, 33 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-sk-csi2-dual-imx219.dtso b/arch/arm64/boot/dts/ti/k3-j721e-sk-csi2-dual-imx219.dtso index 4a395d1209c8..4eb3cffab032 100644 --- a/arch/arm64/boot/dts/ti/k3-j721e-sk-csi2-dual-imx219.dtso +++ b/arch/arm64/boot/dts/ti/k3-j721e-sk-csi2-dual-imx219.dtso @@ -19,6 +19,33 @@ clk_imx219_fixed: imx219-xclk { #clock-cells = <0>; clock-frequency = <24000000>; }; + + reg_2p8v: regulator-2p8v { + compatible = "regulator-fixed"; + regulator-name = "2P8V"; + regulator-min-microvolt = <2800000>; + regulator-max-microvolt = <2800000>; + vin-supply = <&vdd_sd_dv>; + regulator-always-on; + }; + + reg_1p8v: regulator-1p8v { + compatible = "regulator-fixed"; + regulator-name = "1P8V"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + vin-supply = <&vdd_sd_dv>; + regulator-always-on; + }; + + reg_1p2v: regulator-1p2v { + compatible = "regulator-fixed"; + regulator-name = "1P2V"; + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1200000>; + vin-supply = <&vdd_sd_dv>; + regulator-always-on; + }; };
&csi_mux { @@ -34,6 +61,9 @@ imx219_0: imx219-0@10 { reg = <0x10>;
clocks = <&clk_imx219_fixed>; + VANA-supply = <®_2p8v>; + VDIG-supply = <®_1p8v>; + VDDL-supply = <®_1p2v>;
port { csi2_cam0: endpoint { @@ -55,6 +85,9 @@ imx219_1: imx219-1@10 { reg = <0x10>;
clocks = <&clk_imx219_fixed>; + VANA-supply = <®_2p8v>; + VDIG-supply = <®_1p8v>; + VDDL-supply = <®_1p2v>;
port { csi2_cam1: endpoint {
On 4/9/2025 7:11 PM, Yemike Abhilash Chandra wrote:
The link to the schematics seems to need updation, would like to see where these regulators are mentioned, can't find them in [0] which I assume is the latest link.
[0] https://datasheets.raspberrypi.com/camera/camera-module-2-schematics.pdf
Hi Neha,
On 11/04/25 19:08, Francis, Neha wrote:
Yes, It seems that the link to the schematics has been changed. I will submit a separate patch to fix that.
While the regulators are not clearly documented in the schematics, the voltage levels can be observed in the top-right corner of the schematics.
However, the required regulators are explicitly described in the device tree bindings. Please refer: ./Documentation/devicetree/bindings/media/i2c/imx219.yaml
Thanks and Regards Yemike Abhilash Chandra
linux-stable-mirror@lists.linaro.org
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Francis, Neha -
Yemike Abhilash Chandra