riscv: dts: spacemit: define fixed regulators

Define the DC power input and the 4v power as fixed supplies in the
Banana Pi BPI-F3.

Signed-off-by: Alex Elder <elder@riscstar.com>
Link: https://lore.kernel.org/r/20250825172057.163883-7-elder@riscstar.com
Signed-off-by: Yixun Lan <dlan@gentoo.org>

diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
index b33ac47fc6bd8f94c8704073628641e3fbf9e5f1..42762f22ceb14ce18b7a0d5c9a3470ad3975d771 100644 (file)
--- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
@@ -30,6 +30,25 @@
                        default-state = "on";
                };
        };
+
+       reg_dc_in: dc-in-12v {
+               compatible = "regulator-fixed";
+               regulator-name = "dc_in_12v";
+               regulator-min-microvolt = <12000000>;
+               regulator-max-microvolt = <12000000>;
+               regulator-boot-on;
+               regulator-always-on;
+       };
+
+       reg_vcc_4v: vcc-4v {
+               compatible = "regulator-fixed";
+               regulator-name = "vcc_4v";
+               regulator-min-microvolt = <4000000>;
+               regulator-max-microvolt = <4000000>;
+               regulator-boot-on;
+               regulator-always-on;
+               vin-supply = <&reg_dc_in>;
+       };
 };
 
 &emmc {