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arm64: dts: allwinner: h700: Set cpusldo to always-on for RG35XX

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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>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://patch.msgid.link/20241018160617.157083-3-macroalpha82@gmail.com
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
This commit is contained in:
Chris Morgan 2024-10-18 11:06:15 -05:00 committed by Chen-Yu Tsai
parent 6e085e64a2
commit 52b14fb18c
1 changed files with 10 additions and 1 deletions
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11
arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
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@ -328,8 +328,17 @@ 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>;
};
};