linux-kernel - [PATCH v2 6/7] riscv: dts: spacemit: add a PCIe regulator

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Message-ID: <20251013153526.2276556-7-elder@riscstar.com>
Date: Mon, 13 Oct 2025 10:35:23 -0500
From: Alex Elder <elder@...cstar.com>
To: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	bhelgaas@...gle.com,
	lpieralisi@...nel.org,
	kwilczynski@...nel.org,
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	vkoul@...nel.org,
	kishon@...nel.org
Cc: dlan@...too.org,
	guodong@...cstar.com,
	pjw@...nel.org,
	palmer@...belt.com,
	aou@...s.berkeley.edu,
	alex@...ti.fr,
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	namcao@...utronix.de,
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	devicetree@...r.kernel.org,
	linux-pci@...r.kernel.org,
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	spacemit@...ts.linux.dev,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 6/7] riscv: dts: spacemit: add a PCIe regulator

Define a 3.3v fixed voltage regulator to be used by PCIe on the
Banana Pi BPI-F3.  On this platform, this regulator is always on.

Signed-off-by: Alex Elder <elder@...cstar.com>
---
v2: - New patch, for a newly-added regulator

 arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
index 2aaaff77831e1..046ad441b7b4e 100644
--- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
@@ -30,6 +30,14 @@ led1 {
 			default-state = "on";
 		};
 	};
+
+	pcie_vcc_3v3: pcie-vcc3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "PCIE_VCC3V3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
 };
 
 &emmc {
-- 
2.48.1