linux-kernel - [PATCH RFC 1/7] dt: bindings: add qcom,qps615.yaml

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Date: Wed, 26 Jun 2024 18:07:49 +0530
From: Krishna chaitanya chundru <quic_krichai@...cinc.com>
To: Bartosz Golaszewski <brgl@...ev.pl>,
        Manivannan Sadhasivam
	<manivannan.sadhasivam@...aro.org>,
        Lorenzo Pieralisi
	<lpieralisi@...nel.org>,
        Krzysztof Wilczyński
	<kw@...ux.com>,
        Rob Herring <robh@...nel.org>, Bjorn Helgaas
	<bhelgaas@...gle.com>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konrad.dybcio@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>
CC: <quic_vbadigan@...cinc.com>, <quic_skananth@...cinc.com>,
        <quic_nitegupt@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Krishna chaitanya chundru
	<quic_krichai@...cinc.com>
Subject: [PATCH RFC 1/7] dt: bindings: add qcom,qps615.yaml

qps615 is a driver for Qualcomm PCIe switch driver which controls
power & configuration of the hardware.
Add a bindings document for the driver.

Signed-off-by: Krishna chaitanya chundru <quic_krichai@...cinc.com>
---
 .../devicetree/bindings/pci/qcom,qps615.yaml       | 73 ++++++++++++++++++++++
 1 file changed, 73 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/qcom,qps615.yaml b/Documentation/devicetree/bindings/pci/qcom,qps615.yaml
new file mode 100644
index 000000000000..f090683f9e2f
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/qcom,qps615.yaml
@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/qcom,pcie-qps615.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm QPS615 PCIe switch
+
+maintainers:
+  - Krishna chaitanya chundru <quic_krichai@...cinc.com>
+
+description: |
+  Qualcomm QPS615 PCIe switch has one upstream and three downstream
+  ports. One of the downstream ports is used as endpoint device of
+  Ethernet MAC. Other two downstream ports are supposed to connect
+  to external device.
+
+  The power controlled by the GPIO's, if we enable the GPIO's the
+  power to the switch will be on.
+
+  The QPS615 PCIe switch is configured through I2C interface before
+  PCIe link is established.
+
+properties:
+  compatible:
+    enum:
+      - pci1179,0623
+
+  reg:
+    maxItems: 1
+
+  vdd-supply:
+    description: |
+      Phandle to the vdd input voltage which are fixed regulators which
+      in are mapped to the GPIO's.
+
+  switch-i2c-cntrl:
+    description: |
+      phandle to i2c controller which is used to configure the PCIe
+      switch.
+
+required:
+  - compatible
+  - reg
+  - vdd-supply
+  - switch-i2c-cntrl
+
+additionalProperties: false
+
+examples:
+  - |
+    pcie {
+        #address-cells = <3>;
+        #size-cells = <2>;
+
+        pcie@0 {
+            device_type = "pci";
+            reg = <0x0 0x0 0x0 0x0 0x0>;
+            #address-cells = <3>;
+            #size-cells = <2>;
+            ranges;
+
+            bus-range = <0x01 0xff>;
+
+            qps615@0 {
+                compatible = "pci1179,0623";
+                reg = <0x10000 0x0 0x0 0x0 0x0>;
+
+                vdd-supply = <&vdd>;
+		switch-i2c-cntrl = <&foo>;
+            };
+        };
+    };

-- 
2.42.0