aboutsummaryrefslogtreecommitdiff
path: root/drivers/pwm/pwm-raspberrypi-poe.c
AgeCommit message (Collapse)AuthorFilesLines
2021-03-22pwm: Add Raspberry Pi Firmware based PWM busNicolas Saenz Julienne1-0/+206
Adds support to control the PWM bus available in official Raspberry Pi PoE HAT. Only RPi's co-processor has access to it, so commands have to be sent through RPi's firmware mailbox interface. Signed-off-by: Nicolas Saenz Julienne <[email protected]> Reviewed-by: Uwe Kleine-König <[email protected]> Acked-by: Thierry Reding <[email protected]>