[PATCH 8/9] serial: stm32: add wakeup mechanism

From: Fabrice Gasnier 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 Signed-off-by: Bich Hemon ---

[PATCH 8/9] serial: stm32: add wakeup mechanism

From: Fabrice Gasnier 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 Signed-off-by: Bich Hemon --- drivers/tty/serial/stm32-usart.c | 90