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| author | Anson Huang <b20788@freescale.com> | 2015-01-06 18:50:22 +0800 |
|---|---|---|
| committer | Eduardo Valentin <edubezval@gmail.com> | 2015-01-06 09:35:15 -0400 |
| commit | d26eef8b725da620980ee20f7812f4488a206483 (patch) | |
| tree | aa77e88d276f8a3b2451ccbba1a232de46eb1f60 | |
| parent | 5a723e81923410f0d3ae4c38974607b13befdda9 (diff) | |
| download | op-kernel-dev-d26eef8b725da620980ee20f7812f4488a206483.zip op-kernel-dev-d26eef8b725da620980ee20f7812f4488a206483.tar.gz | |
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: Anson Huang <b20788@freescale.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
| -rw-r--r-- | drivers/thermal/imx_thermal.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index c1188ac..2ccbc07 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -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); |
