pwm support for allwinner sun8i SOCs.

PWM support for allwinner sun8i SOCs.

This patchset adds pwm support for allwinner sun8i SOCs.

v2 Changes:
1. change sun8i-r40 symbol to sun8i.
2. change pwm0_pin, pwm0-pin to pwm_ch0_pin, pwm-ch0-pin.
3. remove clk_disable_unprepare(), check !match and IS_ERR(pwm->regmap).

hao_zhang (4):
dt-bindings: pwm: binding allwinner sun8i.
ARM: dtsi: add pwm node for sun8i.
ARM: dts: add pwm status for r40.
ARM: PWM: add allwinner sun8i pwm support.

 .../devicetree/bindings/pwm/pwm-sun8i.txt          |  18 +
 arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts  |   6 +
 arch/arm/boot/dts/sun8i-r40.dtsi                   |  13 +
 drivers/pwm/Kconfig                                |  10 +
 drivers/pwm/Makefile                               |   1 +
 drivers/pwm/pwm-sun8i.c                            | 401 +++++++++++++++++++++
 6 files changed, 449 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sun8i.txt
 create mode 100644 drivers/pwm/pwm-sun8i.c

2.7.4