On Fri, Jul 7, 2023 at 7:28 PM Tim Harvey <tharvey@xxxxxxxxxxxxx> wrote: > > Greetings, > > I have an imx219 camera connected to an imx8mp-venice-gw74xx via the > following details: > - camera is a RaspberryPi Camera v2 - > https://datasheets.raspberrypi.com/camera/camera-v2-schematics.pdf > - has its own on-board 24MHz osc so no clock is required from the baseboard > - pin 11 on the camera enables 1.8V and 2.8V LDO which is connected to > IMX8MP GPIO1_IO1 so we use that as a gpio regulator > - MIPI_CSI1 lanes 0 and 1 are used > > I'm using Linux 6.4 with Laurent's pending patch to add the MIPI CSI > DT nodes to imx8mp.dtsi [1] as follows: > > #include <dt-bindings/gpio/gpio.h> > #include "imx8mp-pinfunc.h" > > /dts-v1/; > /plugin/; > > &{/} { > compatible = "gw,imx8mp-gw74xx", "fsl,imx8mp"; > > reg_cam: regulator-cam { > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_reg_cam>; > compatible = "regulator-fixed"; > regulator-name = "reg_cam"; > gpio = <&gpio1 1 GPIO_ACTIVE_HIGH>; > enable-active-high; > regulator-min-microvolt = <1800000>; > regulator-max-microvolt = <1800000>; > }; > > cam24m: cam24m { > compatible = "fixed-clock"; > #clock-cells = <0>; > clock-frequency = <24000000>; > clock-output-names = "cam24m"; > }; > }; > > &i2c3 { > #address-cells = <1>; > #size-cells = <0>; > > imx219: sensor@10 { > compatible = "sony,imx219"; > reg = <0x10>; > clocks = <&cam24m>; > VDIG-supply = <®_cam>; > > port { > /* MIPI CSI-2 bus endpoint */ > imx219_to_mipi_csi2: endpoint { > remote-endpoint = <&mipi_csi_0_in>; > clock-lanes = <0>; > data-lanes = <1 2>; > link-frequencies = /bits/ 64 <456000000>; > }; > }; > }; > }; > > &mipi_csi_0 { > status = "okay"; > > ports { > port@0 { > mipi_csi_0_in: endpoint { > remote-endpoint = <&imx219_to_mipi_csi2>; > data-lanes = <1 2>; > }; > }; > }; > }; > > &iomuxc { > pinctrl_reg_cam: regcamgrp { > fsl,pins = < > MX8MP_IOMUXC_GPIO1_IO01__GPIO1_IO01 0x41 > >; > }; > }; > > imx-mipi-csis fails to probe due to a missing port1 endpoint and I'm > not clear what to do with that: > imx-mipi-csis 32e40000.csi: Unable to retrieve endpoint for port@1 > imx-mipi-csis: probe of 32e40000.csi failed with error -2 > > Any suggestions? I think the port needs to point to an ISI node or a ISP node. Linux-next shows port@1 pointing to isi_in_0. In the patch you're referencing, it appears that node@1 is missing. Check out: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/arch/arm64/boot/dts/freescale/imx8mp.dtsi?h=next-20230707&id=9da15c4c850dd53309e07d5611f33655f8f8c05d See if that helps. adam > > Best regards, > > Tim > [1] https://patchwork.linuxtv.org/project/linux-media/patch/20230418153104.21337-2-laurent.pinchart@xxxxxxxxxxxxxxxx/
