[PATCH v2 4/4] riscv: dts: spacemit: k1-bananapi-f3: Add vin-supply for PCIe 3.3V regulator

From: Anand Moon <linux.amoon@gmail.com>
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>, Yixun Lan <dlan@kernel.org>,
	Paul Walmsley <pjw@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>,
	devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
	FLATTENED DEVICE TREE BINDINGS),
	linux-riscv@lists.infradead.org (open list:RISC-V SPACEMIT SoC
	Support),
	spacemit@lists.linux.dev (open list:RISC-V SPACEMIT SoC Support),
	linux-kernel@vger.kernel.org (open list)
Cc: Anand Moon <linux.amoon@gmail.com>, Han Gao <gaohan@iscas.ac.cn>,
	Ze Huang <huang.ze@linux.dev>, Chukun Pan <amadeus@jmu.edu.cn>
Subject: [PATCH v2 4/4] riscv: dts: spacemit: k1-bananapi-f3: Add vin-supply for PCIe 3.3V regulator
Date: Sat,  2 May 2026 10:48:57 +0530	[thread overview]
Message-ID: <20260502051906.8160-5-linux.amoon@gmail.com> (raw)
In-Reply-To: <20260502051906.8160-1-linux.amoon@gmail.com>

The PCIe 3.3V fixed regulator node (pcie_vcc_3v3) lacked a parent
supply reference. Wire it to the 5V system rail (reg_vcc5v0_sys)
via the vin-supply property to reflect the actual board power tree.
This ensures correct regulator hierarchy in DTS and allows drivers
to resolve supply dependencies cleanly during probe.

Cc: Han Gao <gaohan@iscas.ac.cn>
Cc: Ze Huang <huang.ze@linux.dev>
Cc: Chukun Pan <amadeus@jmu.edu.cn>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
---
v2: new patch in this series.
---
 arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
index 3dbdf53b6d8e..6c06480ba100 100644
--- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
@@ -39,6 +39,7 @@ pcie_vcc_3v3: regulator-pcie-vcc3v3 {
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
 		regulator-always-on;
+		vin-supply = <&reg_vcc5v0_sys>;
 	};
 
 	reg_dc_in: regulator-dc-in-12v {
-- 
2.50.1

