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The mvebu GPIO driver can also perform PWM on some pins. Use the pwm-fan driver to control the fan of the WRT1900AC, giving us finer grained control over its speed and hence noise. Signed-off-by: Andrew Lunn <andrew@lunn.ch> URL: https://patchwork.ozlabs.org/patch/427291/ [Ralph Sennhauser: drop flags paramter from pwms, no longer used] Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com> Tested-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>