allwinner: A64: Add AXP803 PMIC support to power off the board
Boards with the Allwinner A64 SoC are mostly paired with an AXP803 PMIC,
which allows to programmatically power down the board.
Use the newly introduced RSB driver to detect and program the PMIC on
boot, then later to turn off the main voltage rails when receiving a
PSCI SYSTEM_POWER_OFF command.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/plat/allwinner/sun50i_a64/platform.mk b/plat/allwinner/sun50i_a64/platform.mk
index b032499..b46fbc2 100644
--- a/plat/allwinner/sun50i_a64/platform.mk
+++ b/plat/allwinner/sun50i_a64/platform.mk
@@ -6,3 +6,5 @@
# The differences between the platform are covered by the include files.
include plat/allwinner/common/allwinner-common.mk
+
+PLAT_BL_COMMON_SOURCES += drivers/allwinner/sunxi_rsb.c