Re: [PATCH v2 2/6] media: qcom: camss: clamp VFE clock rates to the highest level

[Bryan O'Donoghue <bryan.odonoghue@linaro.org>]

On 24/10/2026 10:40, Atanas Filipov wrote:
> The VFE fails to power on when the pixel rate exceeds the highest rate
> listed for any of its clocks. The rate tables of the VFE clocks are
> independent and need not have the same number of levels, so a clock
> with a lower top rate than the VFE core clock, such as the SC7280
> camnoc_axi clock, makes the VFE reject pixel rates the core clock
> still supports.
> 
> Clamp each clock to its highest listed rate instead, and warn that the
> pixel rate exceeds it when the clock lists more than one rate. Take the
> clamp into account when another line powers on an already running VFE,
> so that a clock running at its highest rate does not reject the
> request.
> 
> Signed-off-by: Atanas Filipov <atanas.filipov@oss.qualcomm.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>