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Commit c439b8f4 authored by Mark Brown's avatar Mark Brown Committed by Liam Girdwood
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regulator: Bootstrap wm831x DVS VSEL value from ON VSEL if not already set 



If we don't have a DVS VSEL value already set when we start up then start
it off with the value currently being used for ON.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
parent b47ba9fd

drivers/regulator/wm831x-dcdc.c

+14 −0
Original line number Diff line number Diff line
@@ -491,6 +491,20 @@ static __devinit void wm831x_buckv_dvs_init(struct wm831x_dcdc *dcdc, 
		return;

	}



	/* If DVS_VSEL is set to the minimum value then raise it to ON_VSEL

	 * to make bootstrapping a bit smoother.

	 */

	if (!dcdc->dvs_vsel) {

		ret = wm831x_set_bits(wm831x,

				      dcdc->base + WM831X_DCDC_DVS_CONTROL,

				      WM831X_DC1_DVS_VSEL_MASK, dcdc->on_vsel);

		if (ret == 0)

			dcdc->dvs_vsel = dcdc->on_vsel;

		else

			dev_warn(wm831x->dev, "Failed to set DVS_VSEL: %d\n",

				 ret);

	}



	ret = wm831x_set_bits(wm831x, dcdc->base + WM831X_DCDC_DVS_CONTROL,

			      WM831X_DC1_DVS_SRC_MASK, ctrl);

	if (ret < 0) {