clk_get_scaled_duty_cycle
EXPORT_SYMBOL_GPL(clk_get_scaled_duty_cycle);
duty = clk_get_scaled_duty_cycle(priv->aclk, 100);
duty = clk_get_scaled_duty_cycle(priv->bclk, 100);
int clk_get_scaled_duty_cycle(struct clk *clk, unsigned int scale);