On Ebisu the DDR0 power rail needs to be kept powered when backup mode is
enabled.  Reflect this in the "rohm,ddr-backup-power" property for the
BD9571MWV PMIC node.

The accessory power switch (SW23) is a toggle switch, hence specify
"rohm,rstbmode-level".

Based on advice from Geert Uytterhoeven.

Signed-off-by: Simon Horman <horms+rene...@verge.net.au>
---
 arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts 
b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
index 18a99d2e1ea5..0e873ccfd9e5 100644
--- a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
@@ -466,6 +466,8 @@
                #interrupt-cells = <2>;
                gpio-controller;
                #gpio-cells = <2>;
+               rohm,ddr-backup-power = <0x1>;
+               rohm,rstbmode-level;
        };
 };
 
-- 
2.11.0

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