lkml.org 
[lkml]   [2015]   [Jan]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH V2] Thermal: imx: add clk disable/enable for suspend/resume
On Tue, Jan 06, 2015 at 06:50:22PM +0800, Anson Huang wrote:
> 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>

adding to my -fixes branch.

> ---
> drivers/thermal/imx_thermal.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
> index 461bf3d..dc8bcd8 100644
> --- a/drivers/thermal/imx_thermal.c
> +++ b/drivers/thermal/imx_thermal.c
> @@ -600,6 +600,7 @@ 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;
> }
> @@ -609,6 +610,7 @@ 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);
> --
> 1.9.1
>
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2015-01-06 14:41    [W:0.042 / U:0.140 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site