Re: [RFC PATCH 2/8] media: v4l: Add 10-bit RGBIr formats

[Rishikesh Donadkar <r-donadkar@ti.com>]

On 26/09/26 20:10, Laurent Pinchart wrote:
> On Sat, Sep 26, 2026 at 05:30:22PM +0300, Sakari Ailus wrote:
>> Hi Rishikesh,
>>
>> On Fri, Sep 25, 2026 at 06:59:55PM +0530, Rishikesh Donadkar wrote:
>>> From: Jai Luthra <j-luthra@ti.com>
>>>
>>> Some camera sensors now use an expanded CFA pattern to capture near-IR
>>> light along with the visible spectrum (R,G,B). This allows capturing
>>> light in both low-light and day-light scenarios using the same sensor.
>>>
>>> Instead of having a 2x2 repetition of B,G,R like in older bayer formats,
>>> here we have a 4x4 repetition of B,G,R,Ir where the number of G pixels
>>> are the same, but half the B and R pixels are replaced with Ir. Thus
>>> instead of having 4 total phases, we now have 8 total phases or
>>> re-arrangements of this pattern.
>>>
>>> Co-developed-by: Rahul T R <r-ravikumar@ti.com>
>>> Signed-off-by: Rahul T R <r-ravikumar@ti.com>
>>> Signed-off-by: Jai Luthra <j-luthra@ti.com>
>>> Co-developed-by: Rishikesh Donadkar <r-donadkar@ti.com>
>>> Signed-off-by: Rishikesh Donadkar <r-donadkar@ti.com>
>>
>> I think we need to use the common raw mbus and pixel formats for the
>> patterns that have IR pixels. See
>> <URL:https://git.linuxtv.org/sailus/media_tree.git/log/?h=metadata>.
> 
> That's right, we shouldn't add new CFA-specific media bus codes. They
> just don't scale.

Okay

> 
>> That's mostly pending on userspace support now.
>>
>> Can the sensor output Bayer pattern as well?
>