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Message-Id: <20211103184939.45263-3-jim2101024@gmail.com>
Date:   Wed,  3 Nov 2021 14:49:32 -0400
From:   Jim Quinlan <jim2101024@...il.com>
To:     linux-pci@...r.kernel.org,
        Nicolas Saenz Julienne <nsaenz@...nel.org>,
        Rob Herring <robh@...nel.org>, Mark Brown <broonie@...nel.org>,
        bcm-kernel-feedback-list@...adcom.com, jim2101024@...il.com,
        james.quinlan@...adcom.com
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Saenz Julienne <nsaenzjulienne@...e.de>,
        linux-rpi-kernel@...ts.infradead.org (moderated list:BROADCOM
        BCM2711/BCM2835 ARM ARCHITECTURE),
        linux-arm-kernel@...ts.infradead.org (moderated list:BROADCOM
        BCM2711/BCM2835 ARM ARCHITECTURE),
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v7 2/7] dt-bindings: PCI: Add bindings for Brcmstb EP voltage regulators

Similar to the regulator bindings found in "rockchip-pcie-host.txt", this
allows optional regulators to be attached and controlled by the PCIe RC
driver.  That being said, this driver searches in the DT subnode (the EP
node, eg pci-ep@0,0) for the regulator property.

The use of a regulator property in the pcie EP subnode such as
"vpcie12v-supply" depends on a pending pullreq to the pci-bus.yaml
file at

https://github.com/devicetree-org/dt-schema/pull/63

Signed-off-by: Jim Quinlan <jim2101024@...il.com>
---
 .../bindings/pci/brcm,stb-pcie.yaml           | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
index 508e5dce1282..ef2427320b7d 100644
--- a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
@@ -158,5 +158,28 @@ examples:
                                  <0x42000000 0x1 0x80000000 0x3 0x00000000 0x0 0x80000000>;
                     brcm,enable-ssc;
                     brcm,scb-sizes =  <0x0000000080000000 0x0000000080000000>;
+
+                    /* PCIe bridge */
+                    pci@0,0 {
+                            #address-cells = <3>;
+                            #size-cells = <2>;
+                            reg = <0x0 0x0 0x0 0x0 0x0>;
+                            compatible = "pciclass,0604";
+                            device_type = "pci";
+                            vpcie3v3-supply = <&vreg7>;
+                            ranges;
+
+                            /* PCIe endpoint */
+                            pci-ep@0,0 {
+                                    assigned-addresses =
+                                        <0x82010000 0x0 0xf8000000 0x6 0x00000000 0x0 0x2000>;
+                                    reg = <0x0 0x0 0x0 0x0 0x0>;
+                                    compatible = "pci14e4,1688";
+                                    #address-cells = <3>;
+                                    #size-cells = <2>;
+
+                                    ranges;
+                            };
+                    };
             };
     };
-- 
2.17.1

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