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ae35496230
The ADC is typically shared with remote CPUs not running Linux. However, there is only one register to power-up/power-down. Remote CPUs aren't able to power-up the ADC, and rely in Linux doing it instead. This commit uses the adc-reserved-channels devicetree property to distinguish shared usage. In this case, the ADC is powered up at probe time. If the ADC is used only by the CPU running Linux, power-up/down at runtime, only when neeeded. Signed-off-by: Naidu Tellapati <naidu.tellapati@imgtec.com> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>