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IMX708 ccs and link frequency changes - #7605

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naushir wants to merge 4 commits into
raspberrypi:rpi-6.18.yfrom
naushir:imx708_ccs_link_freq
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IMX708 ccs and link frequency changes#7605
naushir wants to merge 4 commits into
raspberrypi:rpi-6.18.yfrom
naushir:imx708_ccs_link_freq

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@naushir

@naushir naushir commented Sep 4, 2026

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jailuthra and others added 4 commits September 4, 2026 08:45
When the PLL is configured in DUAL_MODE (separate VT and OP trees) and
the sensor's FIFOs allow derating and/or overrating, the VT pixel rate
might be higher or lower than OP pixel rate.

Support such usecases by allowing an optional input for the target VT
pixel rate.

Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
Replace the PLL dividers and multipliers hard coded into the mode and link
frequency register lists with a call to the CCS PLL calculator.

The pre-PLL dividers match values those currently in use, and the CCS PLL
calculator generates the same register values as what's in the current
mode list.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Give each mode an array of timings rather than one fixed set, so that
a mode can run faster when the link has the bandwidth for it. The
entry a mode lists first is its default, used for any link frequency
it has no timing for, which leaves every existing mode behaving as
before.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Add timings for a 960MHz link frequency, which gives the full resolution
mode enough bandwidth to reach 30fps in 2-lane mode, and roughly doubles
the rate of the binned modes.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
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2 participants