[PATCH 2/4] arm64: dts: allwinner: h700: Set cpusldo to always-on for RG35XX

[Chris Morgan <macroalpha82@gmail.com>]

From: Chris Morgan <macromorgan@hotmail.com>

Set the cpusldo regulator for the AXP717 to "regulator-always-on". Its
current functionality is still unknown as there are no schematics
available, however it was observed that upon reboot if this regulator
was disabled GPIO detection logic in the bootloader was inconsistent.
Keep the regulator powered on for now until it can be defined
correctly.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
---
 .../allwinner/sun50i-h700-anbernic-rg35xx-2024.dts    | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
index e2039fd76b3d..2896d51cec7d 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
@@ -342,8 +342,17 @@ reg_boost: boost {
 				regulator-name = "boost";
 			};
 
+			/*
+			 * Regulator function is unknown, but reading
+			 * GPIO values in bootloader is inconsistent
+			 * on reboot if this is disabled. Setting to
+			 * default value from regulator OTP mem.
+			 */
 			reg_cpusldo: cpusldo {
-				/* unused */
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <900000>;
 			};
 		};
 
-- 
2.43.0