WM8580_PLLB4
reg = snd_soc_component_read(component, WM8580_PLLB4);
snd_soc_component_write(component, WM8580_PLLB4, reg);
reg = snd_soc_component_read(component, WM8580_PLLB4);
snd_soc_component_write(component, WM8580_PLLB4, reg);