This patch adds a driver for the PWM controller found on Phytium SoCs.
source from Phytium commit 1a1d6db9a1e4e60f80e9c5360056ef0c84f446b1.
Reviewed-by: Hongbo Mao <maohongbo@phytium.com.cn>
(cherry picked from commit 14f5c0b48c)
Signed-off-by: Alex Shi <alexsshi@tencent.com>
Malloy Liu