tree a4894bbb432668d2e5229c3659b6a310881fa31a
parent 3bee2a8f468b471ad0e5c5bd8e6986485056483c
author Yann Gautier <yann.gautier@st.com> 1559664394 +0200
committer Yann Gautier <yann.gautier@st.com> 1567437908 +0200

stm32mp1: add watchdog support

Introduce driver for STM32 IWDG peripheral (Independent Watchdog).
It is configured according to device tree content and should be enabled
from there.
The watchdog is not started by default. It can be started after an HW
reset if the dedicated OTP is fused.

The watchdog also needs to be frozen if a debugger is attached.
This is done by configuring the correct bits in DBGMCU.
This configuration is allowed by checking BSEC properties.

An increase of BL2 size is also required when adding this new code.

Change-Id: Ide7535d717885ce2f9c387cf17afd8b5607f3e7f
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>