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Groups > linux.kernel > #1586566
| From | Steve Longerbeam <slongerbeam@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver |
| Date | 2017-02-23 01:10 +0100 |
| Message-ID | <tdP8S-1kb-5@gated-at.bofh.it> (permalink) |
| References | <tbjZv-8cO-3@gated-at.bofh.it> <tbjZv-8cO-17@gated-at.bofh.it> <tbOqD-3eL-27@gated-at.bofh.it> <tbOJY-3B2-23@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 02/17/2017 03:06 AM, Russell King - ARM Linux wrote:
> On Fri, Feb 17, 2017 at 11:47:59AM +0100, Philipp Zabel wrote:
>> On Wed, 2017-02-15 at 18:19 -0800, Steve Longerbeam wrote:
>>> +static void csi2_dphy_init(struct csi2_dev *csi2)
>>> +{
>>> + /*
>>> + * FIXME: 0x14 is derived from a fixed D-PHY reference
>>> + * clock from the HSI_TX PLL, and a fixed target lane max
>>> + * bandwidth of 300 Mbps. This value should be derived
>>
>> If the table in https://community.nxp.com/docs/DOC-94312 is correct,
>> this should be 850 Mbps. Where does this 300 Mbps value come from?
>
> I thought you had some code to compute the correct value, although
> I guess we've lost the ability to know how fast the sensor is going
> to drive the link.
>
> Note that the IMX219 currently drives the data lanes at 912Mbps almost
> exclusively, as I've yet to finish working out how to derive the PLL
> parameters. (I have something that works, but it currently takes on
> the order of 100k iterations to derive the parameters. gcd() doesn't
> help you in this instance.)
Hi Russell,
As I mentioned, I've added code to imx6-mipi-csi2 to determine the
sources link frequency via V4L2_CID_LINK_FREQ. If you were to implement
this control and return 912 Mbps-per-lane, the D-PHY will be programmed
correctly for the IMX219 (at least, that is the theory anyway).
Alternatively, I could up the default in imx6-mipi-csi2 to 950
Mbps. I will have to test that to make sure it still works with
OV5640 and tc358743.
Steve
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[PATCH v4 00/36] i.MX Media Driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
[PATCH v4 05/36] ARM: dts: imx6qdl-sabrelite: remove erratum ERR006687 workaround Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
[PATCH v4 17/36] media: Add userspace header file for i.MX Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
Re: [PATCH v4 17/36] media: Add userspace header file for i.MX Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-16 12:40 +0100
Re: [PATCH v4 17/36] media: Add userspace header file for i.MX Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-23 01:00 +0100
[PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-16 11:30 +0100
Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 19:10 +0100
Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-17 12:00 +0100
Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-17 12:20 +0100
Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-17 12:40 +0100
Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-23 00:50 +0100
Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-23 00:50 +0100
Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-23 01:10 +0100
Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-23 01:20 +0100
Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-17 15:20 +0100
Re: [PATCH v4 23/36] media: imx: Add MIPI CSI-2 Receiver subdev driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-17 19:30 +0100
[PATCH v4 28/36] media: imx: csi: fix crop rectangle changes in set_fmt Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
Re: [PATCH v4 28/36] media: imx: csi: fix crop rectangle changes in set_fmt Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-16 12:10 +0100
Re: [PATCH v4 28/36] media: imx: csi: fix crop rectangle changes in set_fmt Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 19:20 +0100
[PATCH v4 35/36] media: imx: csi: fix crop rectangle reset in sink set_fmt Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
[PATCH v4 27/36] media: imx: csi: add support for bayer formats Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
[PATCH v4 33/36] media: imx: redo pixel format enumeration and negotiation Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
Re: [PATCH v4 33/36] media: imx: redo pixel format enumeration and negotiation Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-16 12:40 +0100
Re: [PATCH v4 33/36] media: imx: redo pixel format enumeration and negotiation Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-23 01:00 +0100
Re: [PATCH v4 33/36] media: imx: redo pixel format enumeration and negotiation Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-23 10:20 +0100
Re: [PATCH v4 33/36] media: imx: redo pixel format enumeration and negotiation Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-24 02:50 +0100
[PATCH v4 26/36] media: imx: add support for bayer formats Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
[PATCH v4 07/36] ARM: dts: imx6-sabresd: add OV5642 and OV5640 camera sensors Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
Re: [PATCH v4 07/36] ARM: dts: imx6-sabresd: add OV5642 and OV5640 camera sensors Fabio Estevam <festevam@gmail.com> - 2017-02-17 02:00 +0100
Re: [PATCH v4 07/36] ARM: dts: imx6-sabresd: add OV5642 and OV5640 camera sensors Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-17 02:00 +0100
[PATCH v4 10/36] ARM: dts: imx6-sabreauto: add pinctrl for gpt input capture Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
[PATCH v4 06/36] ARM: dts: imx6-sabrelite: add OV5642 and OV5640 camera sensors Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
[PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-18 02:20 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-18 10:30 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-18 18:30 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-18 19:20 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Steve Longerbeam <steve_longerbeam@mentor.com> - 2017-02-18 02:20 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Sakari Ailus <sakari.ailus@iki.fi> - 2017-02-20 23:10 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-21 00:00 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-21 00:50 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Sakari Ailus <sakari.ailus@iki.fi> - 2017-02-21 13:20 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-21 23:30 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-22 00:40 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-21 01:20 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-21 10:00 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-21 01:20 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Sakari Ailus <sakari.ailus@iki.fi> - 2017-02-21 13:40 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-21 14:30 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Sakari Ailus <sakari.ailus@iki.fi> - 2017-02-21 16:40 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-21 17:10 +0100
Re: [PATCH v4 29/36] media: imx: mipi-csi2: enable setting and getting of frame rates Sakari Ailus <sakari.ailus@iki.fi> - 2017-02-21 17:20 +0100
[PATCH v4 13/36] [media] v4l2: add a frame timeout event Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
[PATCH v4 31/36] media: imx: csi: add __csi_get_fmt Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
[PATCH v4 12/36] add mux and video interface bridge entity functions Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
Re: [PATCH v4 12/36] add mux and video interface bridge entity functions Pavel Machek <pavel@ucw.cz> - 2017-02-19 22:40 +0100
Re: [PATCH v4 12/36] add mux and video interface bridge entity functions Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-22 18:30 +0100
[PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Pavel Machek <pavel@ucw.cz> - 2017-02-19 23:00 +0100
[PATCH v4 15/36] platform: add video-multiplexer subdevice driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
Re: [PATCH v4 15/36] platform: add video-multiplexer subdevice driver Pavel Machek <pavel@ucw.cz> - 2017-02-19 23:20 +0100
Re: [PATCH v4 15/36] platform: add video-multiplexer subdevice driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-21 10:20 +0100
Re: [PATCH v4 15/36] platform: add video-multiplexer subdevice driver Pavel Machek <pavel@ucw.cz> - 2017-02-24 21:10 +0100
Re: [PATCH v4 15/36] platform: add video-multiplexer subdevice driver Rob Herring <robh@kernel.org> - 2017-02-27 15:50 +0100
Re: [PATCH v4 15/36] platform: add video-multiplexer subdevice driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-01 01:30 +0100
[PATCH v4 21/36] media: imx: Add VDIC subdev driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
[PATCH v4 32/36] media: imx: csi/fim: add support for frame intervals Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
Re: [PATCH v4 32/36] media: imx: csi/fim: add support for frame intervals Steve Longerbeam <steve_longerbeam@mentor.com> - 2017-02-16 03:40 +0100
[PATCH v4 09/36] ARM: dts: imx6-sabreauto: add reset-gpios property for max7310_b Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:30 +0100
[PATCH v4 01/36] [media] dt-bindings: Add bindings for i.MX media driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:40 +0100
Re: [PATCH v4 01/36] [media] dt-bindings: Add bindings for i.MX media driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-16 13:00 +0100
Re: [PATCH v4 01/36] [media] dt-bindings: Add bindings for i.MX media driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 20:30 +0100
Re: [PATCH v4 01/36] [media] dt-bindings: Add bindings for i.MX media driver Rob Herring <robh@kernel.org> - 2017-02-27 15:50 +0100
Re: [PATCH v4 01/36] [media] dt-bindings: Add bindings for i.MX media driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-01 01:40 +0100
[PATCH v4 04/36] ARM: dts: imx6qdl: add capture-subsystem device Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 03:40 +0100
Re: [PATCH v4 18/36] media: Add i.MX media core driver Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-16 11:30 +0100
Re: [PATCH v4 18/36] media: Add i.MX media core driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 19:00 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-16 12:40 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 19:40 +0100
Re: [PATCH v4 18/36] media: Add i.MX media core driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-16 14:10 +0100
Re: [PATCH v4 18/36] media: Add i.MX media core driver Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-16 14:50 +0100
Re: [PATCH v4 18/36] media: Add i.MX media core driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-17 02:40 +0100
Re: [PATCH v4 18/36] media: Add i.MX media core driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-17 09:40 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-16 23:30 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-17 00:10 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-17 11:50 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-17 12:00 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-17 12:30 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-02-18 18:40 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-17 12:50 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Sakari Ailus <sakari.ailus@iki.fi> - 2017-02-17 13:30 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-17 13:40 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Philipp Zabel <p.zabel@pengutronix.de> - 2017-02-17 16:10 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Sakari Ailus <sakari.ailus@iki.fi> - 2017-02-18 13:10 +0100
Re: [PATCH v4 00/36] i.MX Media Driver Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-02-16 23:30 +0100
Re: [PATCH v4 24/36] [media] add Omnivision OV5640 sensor driver Rob Herring <robh@kernel.org> - 2017-02-27 15:50 +0100
Re: [PATCH v4 24/36] [media] add Omnivision OV5640 sensor driver Steve Longerbeam <slongerbeam@gmail.com> - 2017-03-01 01:50 +0100
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