Re: [RFC V2 0/5] arm64: dts: imx8mm: Enable CSI and OV5640 Camera
From: Adam Ford <hidden>
Date: 2021-11-02 18:08:30
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On Tue, Nov 2, 2021 at 12:50 PM Tim Harvey [off-list ref] wrote:
On Mon, Nov 1, 2021 at 5:30 PM Adam Ford [off-list ref] wrote:quoted
On Mon, Nov 1, 2021 at 6:05 PM Tim Harvey [off-list ref] wrote:quoted
On Fri, Oct 29, 2021 at 4:11 AM Frieder Schrempf [off-list ref] wrote:quoted
On 28.10.21 02:39, Adam Ford wrote:quoted
On Sun, Oct 24, 2021 at 7:16 AM Fabio Estevam [off-list ref] wrote:quoted
Hi Adam, [Adding Frieder on Cc] On Sat, Oct 23, 2021 at 5:35 PM Adam Ford [off-list ref] wrote:quoted
The imx8mm appears to have both a CSI bridge and mipi-csi-2 drivers. With those enabled, both the imx8mm-evk and imx8mm-beacon boards should be able use an OV5640 camera. The mipi-csi2 driver sets the clock frequency to 333MHz, so the clock parent of the CSI1 must be reparented to a faster clock. On the custom NXP kernel, they use IMX8MM_SYS_PLL2_1000M, so that is done in the device tree to match. With the CSI and mipi_csi2 drivers pointing to an OV5640 camera, the media pipeline can be configured with the following: media-ctl --links "'ov5640 1-003c':0->'imx7-mipi-csis.0':0[1]" The camera and various nodes in the pipeline can be configured for UYVY: media-ctl -v -V "'ov5640 1-003c':0 [fmt:UYVY8_1X16/640x480 field:none]" media-ctl -v -V "'csi':0 [fmt:UYVY8_1X16/640x480 field:none]" With that, the media pipeline looks like: Media controller API version 5.15.0 Media device information ------------------------ driver imx7-csi model imx-media serial bus info platform:32e20000.csi hw revision 0x0 driver version 5.15.0 Device topology - entity 1: csi (2 pads, 2 links) type V4L2 subdev subtype Unknown flags 0 device node name /dev/v4l-subdev0 pad0: Sink [fmt:UYVY8_1X16/640x480 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:lim-range] <- "imx7-mipi-csis.0":1 [ENABLED,IMMUTABLE] pad1: Source [fmt:UYVY8_1X16/640x480 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:lim-range] -> "csi capture":0 [ENABLED,IMMUTABLE] - entity 4: csi capture (1 pad, 1 link) type Node subtype V4L flags 0 device node name /dev/video0 pad0: Sink <- "csi":1 [ENABLED,IMMUTABLE] - entity 10: imx7-mipi-csis.0 (2 pads, 2 links) type V4L2 subdev subtype Unknown flags 0 device node name /dev/v4l-subdev1 pad0: Sink [fmt:UYVY8_1X16/640x480 field:none colorspace:smpte170m xfer:709 ycbcr:601 quantization:lim-range] <- "ov5640 1-003c":0 [ENABLED] pad1: Source [fmt:UYVY8_1X16/640x480 field:none colorspace:smpte170m xfer:709 ycbcr:601 quantization:lim-range] -> "csi":0 [ENABLED,IMMUTABLE] - entity 15: ov5640 1-003c (1 pad, 1 link) type V4L2 subdev subtype Sensor flags 0 device node name /dev/v4l-subdev2 pad0: Source [fmt:UYVY8_1X16/640x480@1/30 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:full-range] -> "imx7-mipi-csis.0":0 [ENABLED] When configured, gstreamer can be used to capture 1 frame and store it to a file. gst-launch-1.0 -v v4l2src num-buffers=1 ! video/x-raw,format=UYVY,width=640,height=480,framerate=60/1 ! filesink location=test Unfortunately, the video capture never appears to happen. No errors occur, not interrupts are recorded and no errors are recorded. gst-launch-1.0 -v v4l2src num-buffers=1 ! video/x-raw,format=UYVY,width=640,height=480,framerate=60/1 ! filesink location=test Setting pipeline to PAUSED ... Pipeline is live and does not need PREROLL ... Pipeline is PREROLLED ... Setting pipeline to [ 114.819632] v4l2_get_link_freq: Link frequency estimated using pixel rate: result might be inaccurate PLAYING ... New clock: GstSystem[ 114.829203] v4l2_get_link_freq: Consider implementing support for V4L2_CID_LINK_FREQ in the transmitter driver Clock /GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = video/x-raw, format=(string)UYVY, width=(int)640, height=(int)480, framerate=(fraction)60/1, interlace-mode=(string)progressive, colorimetry=(string)bt709 /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = video/x-raw, format=(string)UYVY, width=(int)640, height=(int)480, framerate=(fraction)60/1, interlace-mode=(string)progressive, colorimetry=(string)bt709 /GstPipeline:pipeline0/GstFileSink:filesink0.GstPad:sink: caps = video/x-raw, format=(string)UYVY, width=(int)640, height=(int)480, framerate=(fraction)60/1, interlace-mode=(string)progressive, colorimetry=(string)bt709 /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = video/x-raw, format=(string)UYVY, width=(int)640, height=(int)480, framerate=(fraction)60/1, interlace-mode=(string)progressive, colorimetry=(string)bt709 If anyone has any insight as to what might be wrong, I'd like feedback. I posted a device tree that I beleive goes with the newer imx8mm-evk, but I do not have this hardware, so I cannot test it.It seems that Frieder on Cc managed to get camera capture to work on i.MX8MM here: https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kontron-electronics.de%2Fsw%2Fmisc%2Flinux%2F-%2Fcommits%2Fv5.10-mx8mm-csi&data=04%7C01%7Cfrieder.schrempf%40kontron.de%7Cfe4f7347385f4185b1c608d999ab75b5%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C0%7C637709783979195945%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=PbGqhzb2mbUA2SD44%2BosK8rNkK12m1LRd6W4tvkawno%3D&reserved=0 Hopefully, this can help to figure out what is missing in mainline to get camera capture to work on i.MX8M. I don't have access to an OV5640 camera to connect to the imx8mm-evk board to try your series.Fabio, Thanks for the heads up on that repo. I was able to use that repo and get still images to capture on an OV5640, but I noticed a fair amount of differences between that repo and what's found in linux-next. Laurent, I haven't exhausted the patch differences, but I found at least a few that appear to be missiing upstream, and I am curious to know if/what your opinion is on whether or not they're needed, since the patches on Frieder's repo appear to come from you. [1] - media: imx: imx7-media-csi: Add i.MX8MM identification [2] - media: imx: imx7_mipi_csis: Don't set reserved CLK_CTRL field on i.MX8MM [3] - media: imx: imx7_mipi_csis: Set dual pixel mode for RAW formats media: imx: imx7_mipi_csis: Set dual pixel mode for RAW formats Maybe these don't need to be applied, but they are 'some' of the differences that I see between this 5.10 branch and linux-next . I know there are more, but [1] - https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kontron-electronics.de%2Fsw%2Fmisc%2Flinux%2F-%2Fcommit%2F8ac7ec6db0c260a871038721886dbdb6660ed84c&data=04%7C01%7Cfrieder.schrempf%40kontron.de%7Cfe4f7347385f4185b1c608d999ab75b5%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C0%7C637709783979195945%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=j1iuXWljDd8wA5M44KwLCb%2F21tpdOnKZuJazl25bXbQ%3D&reserved=0 [2] - https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kontron-electronics.de%2Fsw%2Fmisc%2Flinux%2F-%2Fcommit%2F0b5727c8eba8c370f7db5eace0243f78992a4dbb&data=04%7C01%7Cfrieder.schrempf%40kontron.de%7Cfe4f7347385f4185b1c608d999ab75b5%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C0%7C637709783979205943%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=buWbZF0tYfVmibQgBbKJM1PF%2Fw7%2BVO9jhXRCI1zf7TI%3D&reserved=0 [3] - https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kontron-electronics.de%2Fsw%2Fmisc%2Flinux%2F-%2Fcommit%2F14befa6bc146b10092a6ac5d0ed4d42c87c6cf27&data=04%7C01%7Cfrieder.schrempf%40kontron.de%7Cfe4f7347385f4185b1c608d999ab75b5%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C0%7C637709783979205943%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=60iLhs0G0FtQegNp9XtVxAhvZEcltdAGGMNAm2l1cSs%3D&reserved=0 Frieder et al, Have you (or anyone) tried CSI cameras on anything newer than 5.10? I am curious to see if a regression popped in somewhere, but git bisect will make this difficult since there is a fair amount of variation between this custom repo and the upstream.No, I haven't done anything with CSI on a more recent kernel. And I only used CSI with the tree above and the ADV7280M bridge. I don't have any hardware with a sensor/camera. In case you haven't seen this already, here is a thread with some notes about my testing results: https://patchwork.kernel.org/project/linux-media/cover/20210215042741.28850-1-laurent.pinchart@ideasonboard.com/.For what it's worth I've got another test setup for IMX8MM CSI capture. I have a Raspberry Pi Camera module v2 connected to an imx8mm-venice-gw73xx board. This is a IMX219 8.28MP camera with a 4-lane CSI connection. Putting Adam's patch 'arm64: dts: imx8mm: Add CSI nodes' as well as the 'blk-ctl series on top of 5.15 and adding support to my dt via: commit 87f908a57f48bd7375113991434c2923d65506ac (HEAD -> v5.15-venice) Author: Tim Harvey [off-list ref] Date: Wed Oct 27 15:45:23 2021 -0700 arm64: dts: imx8mm-venice-gw73xx: add rpi camera module v2 Add support for rpi camera module v2 which is an IMX219 8MP module: - https://datasheets.raspberrypi.com/camera/camera-v2-schematics.pdf - has its own on-board 24MHz osc so no clock required from baseboard - pin 11 enables 1.8V and 2.8V LDO which is connected to GW73xx MIPI_GPIO4 (IMX8MM GPIO1_IO1). imx219 driver does not support powerdown-gpios and using gpio1 as reset-gpios Signed-off-by: Tim Harvey [off-list ref]diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsib/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi index 7b00b6b5bb38..b708c80d884b 100644--- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi@@ -35,6 +35,13 @@ }; }; + cam24m: cam24m { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <24000000>; + clock-output-names = "cam24m"; + }; + pcie0_refclk: pcie0-refclk { compatible = "fixed-clock"; #clock-cells = <0>;@@ -100,6 +107,19 @@ }; }; +&csi { + status = "okay"; +}; + +&imx8mm_mipi_csi_in { + remote-endpoint = <&imx219_to_mipi_csi2>; + data-lanes = <1 2>; +}; + +&mipi_csi2 { + status = "okay"; +}; + /* off-board header */ &ecspi2 { pinctrl-names = "default";@@ -132,6 +152,25 @@ pinctrl-names = "default"; pinctrl-0 = <&pinctrl_i2c3>; status = "okay"; + + imx219: sensor@10 { + compatible = "sony,imx219"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_imx219>; + reg = <0x10>; + clocks = <&cam24m>; + reset-gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>; + + port { + /* MIPI CSI-2 bus endpoint */ + imx219_to_mipi_csi2: endpoint { + remote-endpoint = <&imx8mm_mipi_csi_in>; + clock-lanes = <0>; + data-lanes = <1 2>; + link-frequencies = /bits/ 64 <456000000>; + }; + }; + }; }; &pcie_phy {@@ -297,6 +336,12 @@ >; }; + pinctrl_imx219: imx219grp { + fsl,pins = < + MX8MM_IOMUXC_GPIO1_IO01_GPIO1_IO1 0x41 + >; + }; + pinctrl_pcie0: pcie0grp { fsl,pins = < MX8MM_IOMUXC_SAI1_RXD4_GPIO4_IO6 0x41While the IMX219 supports up to 4 MIPI CSI2 lanes and a variety of resolutions up to 8MP, the IMX219 driver (drivers/media/i2c/imx219.c) currently supports only 2 lanes, and a few different resolutions including 1080p@30fps (cropped FOV), 1640x1232@30fps (2x2 binned), 640x480@30fps (cropped) with RAW8 and RAW10 formats.I am hoping to support this camera as well once I get the OV5640 working.quoted
I'm setting up the pipeline like this: media-ctl --links "'imx219 2-0010':0->'imx7-mipi-csis.0':0[1]" media-ctl -v -V "'imx219 2-0010':0 [fmt:SRGGB10/640x480 field:none]" media-ctl -v -V "'csi':0 [fmt:SRGGB10/640x480 field:none]" and capture: gst-launch-1.0 -v v4l2src num-buffers=1 ! video/x-bayer,format=rggb,width=640,height=480,framerate=30/1 ! filesink location=test The above hangs after: Setting pipeline to PAUSED ... Pipeline is live and does not need PREROLL ... Setting pipeline to PLAYING ... /GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = video/x-bayer, format=(string)rggb, width=(int)640, height=(int)480, framerate=(fraction)30/1, interlace-mode=(string)progressive New clock: GstSystemClock /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = video/x-bayer, format=(string)rggb, width=(int)640, height=(int)480, framerate=(fraction)30/1, interlace-mode=(string)progressive /GstPipeline:pipeline0/GstFileSink:filesink0.GstPad:sink: caps = video/x-bayer, format=(string)rggb, width=(int)640, height=(int)480, framerate=(fraction)30/1, interlace-mode=(string)progressive /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = video/x-bayer, format=(string)rggb, width=(int)640, height=(int)480, framerate=(fraction)30/1, interlace-mode=(string)progressive I've tried Laurent's 'media: imx: imx7_mipi_csis: Set dual pixel mode for RAW formats' patch with the same results.Same here.quoted
Let me know if any of you have some ideas here.Tim, Can you check /proc/interrupts? I assume that you've got no interrupts either.Adam, like your setup I see: 52: 0 0 0 0 GICv3 48 Level csi 53: 0 0 0 0 GICv3 49 Level 32e30000.mipi-csi Err: 0 clk_summary: enable prepare protect duty hardware clock count count count rate accuracy phase cycle enable ------------------------------------------------------------------------------------------------------- sys_pll2 6 6 0 1000000000 0 0 50000 Y sys_pll2_out 1 1 0 1000000000 0 0 50000 Y sys_pll2_1000m 3 3 0 1000000000 0 0 50000 Y csi1_phy_ref 2 2 0 1000000000 0 0 50000 Y csi1_core 1 1 0 333333334 0 0 50000 Y csi1_root_clk 3 3 0 333333334 0 0 50000 Yquoted
I've added a bunch of debug code to the 5.10 NXP kernel and dumped a bunch of the regisgters and compared it to the ov5640 running on the beacon board. As of now, I think the issue is somewhere in the CSI Bridge driver. I've made a few changes to make the CSI bridge registers match that of the 5.10 NXP kernel, but I haven't found the magic register yet. In my setup, I can get the CSIS driver registers to match the NXP kernel, so I'm leaning toward either the CSI bridge driver or an order of operations difference between the mainline kernel and NXP's. I'm working on this in my spare time, so I'll keep you posted if I make any progress.Sounds good, let me know if you need more testing. I also have an imx8mm-evk here with the ov5640 camera so can do some testing there as well. I'm not clear how to use the imx8mm-evk with NXP's lf-5.10.y downstream vendor kernel in order to compare as it uses their proprietary platform capture driver instead of using the media controller API and I'm not clear how to set that device up for capture. However if I test that board using the 5.15 with your series (adjusted for the ov5640 camera on i2c3 for the imx8mm-evk) I get the same results as you do also - no interrupts.
I have put together a list of registers that are set (and in what order). I'll try to clean it up and post them. I think there are a few registers being set differently, but I am not a CSI-2 expert, so I do not necessarily know what the 'right' register setting is. I also noticed that there is a CSIS driver [1] that's not in the staging area that seems to be similar to that of the iMX8M Mini, so I've been tempted to review those register settings to see if it could be adapted to fit the imx7 and the 8MM, but I think the area to focus is the CSI Bridge and not the CSIS. I could be wrong, but my CSIS registers are nearly identical to a working register set from an older NXP kernel. adam [1] - https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/media/platform/exynos4-is/mipi-csis.c?h=v5.15
Best regards, Tim
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