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pwm: rockchip: document RK3288 SoC compatible
Document new compatible for PWM founding on RK3288 SoC Signed-off-by: Caesar Wang <caesar.wang@rock-chips.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Rockchip PWM controller
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Required properties:
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- compatible: should be "rockchip,rk2928-pwm"
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- compatible: should be "rockchip,<name>-pwm"
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"rockchip,rk2928-pwm": found on RK29XX,RK3066 and RK3188 SoCs
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"rockchip,rk3288-pwm": found on RK3288 SoC
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"rockchip,vop-pwm": found integrated in VOP on RK3288 SoC
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- reg: physical base address and length of the controller's registers
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- clocks: phandle and clock specifier of the PWM reference clock
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- #pwm-cells: should be 2. See pwm.txt in this directory for a
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