WM831X_CHG_VSEL_SHIFT
{ 4050, 0 << WM831X_CHG_VSEL_SHIFT },
{ 4100, 1 << WM831X_CHG_VSEL_SHIFT },
{ 4150, 2 << WM831X_CHG_VSEL_SHIFT },
{ 4200, 3 << WM831X_CHG_VSEL_SHIFT },