[PATCH v3 3/3] arm64: dts: renesas: ulcb: Add PMIC DDR Backup Power config

[Geert Uytterhoeven <geert+renesas@glider.be>]

On the R-Car Starter Kit Premier/Pro, all of the DDR0, DDR1, DDR0C, and
DDR1C power rails need 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 (SW8) is a momentary switch, hense specify
"rohm,rstbmode-pulse".

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v3:
  - Use a hex value for the bit mask,

v2:
  - New.
---
 arch/arm64/boot/dts/renesas/ulcb.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/ulcb.dtsi b/arch/arm64/boot/dts/renesas/ulcb.dtsi
index bb21ae335e8b8489..432a4e9752f2b923 100644
--- a/arch/arm64/boot/dts/renesas/ulcb.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb.dtsi
@@ -256,6 +256,8 @@
 		#interrupt-cells = <2>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		rohm,ddr-backup-power = <0xf>;
+		rohm,rstbmode-pulse;
 
 		regulators {
 			dvfs: dvfs {
-- 
2.7.4