Re: [PATCH 2/8] tty: serial: fsl_lpuart: support suspend/resume

From: Shawn Guo
Date: Sat Jun 11 2016 - 10:04:30 EST


On Thu, Jun 09, 2016 at 08:40:33PM +0530, Bhuvanchandra DV wrote:
> From: Stefan Agner <stefan@xxxxxxxx>
>
> In order to allow wake support in STOP sleep mode, clocks are
> needed. Use imx_clk_gate2_cgr to disable automatic clock gating
> in low power mode STOP. This allows to enable wake by UART using:
> echo enabled > /sys/class/tty/ttyLP0/power/wakeup
>
> However, if wake is not enabled, the driver should disable the
> clocks explicitly to save power.
>
> Signed-off-by: Stefan Agner <stefan@xxxxxxxx>
> ---
> drivers/clk/imx/clk-vf610.c | 12 ++++++------

Please send clock driver changes in a separate patch.

Shawn

> drivers/tty/serial/fsl_lpuart.c | 16 ++++++++++++++--
> 2 files changed, 20 insertions(+), 8 deletions(-)