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Commit d26eef8b authored by Anson Huang's avatar Anson Huang Committed by Eduardo Valentin
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Thermal: imx: add clk disable/enable for suspend/resume 



Thermal sensor's clk is from pll3_usb_otg, per hardware
design requirement, need to make sure pll3_usb_otg is disabled
before STOP mode is entered, otherwise, all PFDs under it may
enter incorrect state, this patch disables pll3_usb_otg before
suspend and enables it after resume.

Signed-off-by: default avatarAnson Huang <b20788@freescale.com>
Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
parent 5a723e81

drivers/thermal/imx_thermal.c

+2 −0
Original line number Diff line number Diff line
@@ -608,6 +608,7 @@ static int imx_thermal_suspend(struct device *dev) 
	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP);

	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN);

	data->mode = THERMAL_DEVICE_DISABLED;

	clk_disable_unprepare(data->thermal_clk);



	return 0;

}
@@ -617,6 +618,7 @@ static int imx_thermal_resume(struct device *dev) 
	struct imx_thermal_data *data = dev_get_drvdata(dev);

	struct regmap *map = data->tempmon;



	clk_prepare_enable(data->thermal_clk);

	/* Enabled thermal sensor after resume */

	regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);

	regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);