From: Tomi Valkeinen Date: Thu, 13 Mar 2014 12:33:03 +0000 (+0200) Subject: OMAPDSS: DSI: set regulator voltage to 1.8V X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=02b7a32083b9930543663720758de249b4f6a2a3;p=linux-beck.git OMAPDSS: DSI: set regulator voltage to 1.8V Set the DSI vdd regulator voltage to the required 1.8V. This is required for the case when the regulator in the DT data defines a range of allowed voltages. In this case it's required to set the voltage, as otherwise enabling the voltage fails. Signed-off-by: Tomi Valkeinen --- diff --git a/drivers/video/fbdev/omap2/dss/dsi.c b/drivers/video/fbdev/omap2/dss/dsi.c index 8be9b04d8849..57f120896b43 100644 --- a/drivers/video/fbdev/omap2/dss/dsi.c +++ b/drivers/video/fbdev/omap2/dss/dsi.c @@ -1161,6 +1161,7 @@ static int dsi_regulator_init(struct platform_device *dsidev) { struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); struct regulator *vdds_dsi; + int r; if (dsi->vdds_dsi_reg != NULL) return 0; @@ -1173,6 +1174,15 @@ static int dsi_regulator_init(struct platform_device *dsidev) return PTR_ERR(vdds_dsi); } + if (regulator_can_change_voltage(vdds_dsi)) { + r = regulator_set_voltage(vdds_dsi, 1800000, 1800000); + if (r) { + devm_regulator_put(vdds_dsi); + DSSERR("can't set the DSI regulator voltage\n"); + return r; + } + } + dsi->vdds_dsi_reg = vdds_dsi; return 0;