serial: stm32: add wakeup mechanism

Add support for wake-up from low power modes. This extends stm32f7.
Introduce new compatible for stm32h7 to manage wake-up capability.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Bich Hemon <bich.hemon@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fabrice Gasnier 2017-07-13 15:08:30 +00:00 • committed by Greg Kroah-Hartman
commit 270e5a74fe
2 changed files with 118 additions and 1 deletions