linux-kernel - [PATCH v1 1/2] dt-bindings: PCI: ti,j721e-pci-host: Add optional regulator supplies

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Message-ID: <20251014112553.398845-2-ivitro@gmail.com>
Date: Tue, 14 Oct 2025 12:25:48 +0100
From: Vitor Soares <ivitro@...il.com>
To: Bjorn Helgaas <bhelgaas@...gle.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>
Cc: Vitor Soares <vitor.soares@...adex.com>,
	linux-pci@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	ivitro@...il.com
Subject: [PATCH v1 1/2] dt-bindings: PCI: ti,j721e-pci-host: Add optional regulator supplies

From: Vitor Soares <vitor.soares@...adex.com>

Add optional regulator supply properties for PCIe endpoints on TI SoCs.
Some boards provide dedicated regulators for PCIe devices, such as
1.5V (miniPCIe), 3.3V (common for M.2 or miniPCIe), or 12V
(for high-power devices). These supplies are now described as optional
properties to allow the driver to control endpoint power where supported.

Signed-off-by: Vitor Soares <vitor.soares@...adex.com>
---
 .../devicetree/bindings/pci/ti,j721e-pci-host.yaml | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml b/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml
index c704099f134b..a20b03406448 100644
--- a/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml
+++ b/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml
@@ -110,6 +110,18 @@ properties:
       interrupts:
         maxItems: 1
 
+  vpcie1v5-supply:
+    description: 1.5V regulator used to power PCIe interfaces,
+                 typically present on miniPCIe slots.
+
+  vpcie3v3-supply:
+    description: 3.3V regulator used to power PCIe interfaces
+                 or endpoint connectors such as M.2 or miniPCIe.
+
+  vpcie12v-supply:
+    description: 12V regulator used to power PCIe slots that
+                 require higher-voltage devices (e.g. full-size cards).
+
 allOf:
   - $ref: cdns-pcie-host.yaml#
   - if:
@@ -202,5 +214,7 @@ examples:
             ranges = <0x01000000 0x0 0x10001000  0x00 0x10001000  0x0 0x0010000>,
                      <0x02000000 0x0 0x10011000  0x00 0x10011000  0x0 0x7fef000>;
             dma-ranges = <0x02000000 0x0 0x0 0x0 0x0 0x10000 0x0>;
+            vpcie3v3-supply = <&pcie_3v3>;
+            vpcie12v-supply = <&pcie_12v>;
         };
     };
-- 
2.51.0