tree 401a856ee6fd9b763a33c40b1067ca82c8b76488
parent 9348736d49e9c8e0f4208d7532315c4555828570
author David Wu <david.wu@rock-chips.com> 1575366593 +0800
committer Kever Yang <kever.yang@rock-chips.com> 1575561983 +0800

pwm: rk_pwm: Make PWM driver to support all Rockchip Socs

This PWM driver can be used to support pwm functions
for on all Rockchip Socs.

The previous chips than RK3288 did not support polarity,
and register layout was different from the RK3288 PWM.

The RK3288 keep the current functions.

RK3328 and the chips after it, which can support hardware lock,
configure duty, period and polarity at next same period, to
prevent the intermediate temporary state.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>