linux-kernel - [PATCH v2 10/14] dt-bindings: PCI: Add host mode dt-bindings for TI's J721E SoC

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Date:   Mon, 6 Jan 2020 15:50:54 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Andrew Murray <andrew.murray@....com>
CC:     <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v2 10/14] dt-bindings: PCI: Add host mode dt-bindings for TI's J721E SoC

Add host mode dt-bindings for TI's J721E SoC.

Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
 .../bindings/pci/ti,j721e-pci-host.yaml       | 119 ++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml

diff --git a/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml b/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml
new file mode 100644
index 000000000000..b78228ca0452
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml
@@ -0,0 +1,119 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/pci/ti,j721e-pci-host.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: TI J721E PCI Host (PCIe Wrapper)
+
+maintainers:
+  - Kishon Vijay Abraham I <kishon@...com>
+
+allOf:
+  - $ref: "cdns-pcie-host.yaml#"
+
+properties:
+  compatible:
+      enum:
+        - ti,j721e-pcie-host
+
+  reg:
+    maxItems: 4
+
+  reg-names:
+    items:
+      - const: intd_cfg
+      - const: user_cfg
+      - const: reg
+      - const: cfg
+
+  ti,syscon-pcie-ctrl:
+    description: Phandle to the SYSCON entry required for configuring PCIe mode
+      and link speed.
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/phandle
+
+  power-domains:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+    description: clock-specifier to represent input to the PCIe
+
+  clock-names:
+    items:
+      - const: fck
+
+  vendor-id:
+    const: 0x104c
+
+  device-id:
+    const: 0xb00d
+
+  msi-map: true
+
+  dma-coherent:
+    description: Indicates that the PCIe IP block can ensure the coherency
+
+  ranges:
+    maxItems: 2
+
+  reset-gpios:
+    description: GPIO specifier for the PERST# signal
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - ti,syscon-pcie-ctrl
+  - max-link-speed
+  - num-lanes
+  - power-domains
+  - clocks
+  - clock-names
+  - cdns,max-outbound-regions
+  - cdns,no-bar-match-nbits
+  - vendor-id
+  - device-id
+  - msi-map
+  - dma-coherent
+  - ranges
+  - reset-gpios
+  - phys
+  - phy-names
+
+examples:
+  - |
+    #include <dt-bindings/soc/ti,sci_pm_domain.h>
+    #include <dt-bindings/gpio/gpio.h>
+
+    pcie0_rc: pcie@...0000 {
+            compatible = "ti,j721e-pcie-host";
+            reg = <0x00 0x02900000 0x00 0x1000>,
+                  <0x00 0x02907000 0x00 0x400>,
+                  <0x00 0x0d000000 0x00 0x00800000>,
+                  <0x00 0x10000000 0x00 0x00001000>;
+            reg-names = "intd_cfg", "user_cfg", "reg", "cfg";
+            ti,syscon-pcie-ctrl = <&pcie0_ctrl>;
+            max-link-speed = <3>;
+            num-lanes = <2>;
+            power-domains = <&k3_pds 239 TI_SCI_PD_EXCLUSIVE>;
+            clocks = <&k3_clks 239 1>;
+            clock-names = "fck";
+            device_type = "pci";
+            #address-cells = <3>;
+            #size-cells = <2>;
+            bus-range = <0x0 0xf>;
+            cdns,max-outbound-regions = <16>;
+            cdns,no-bar-match-nbits = <64>;
+            vendor-id = /bits/ 16 <0x104c>;
+            device-id = /bits/ 16 <0xb00d>;
+            msi-map = <0x0 &gic_its 0x0 0x10000>;
+            dma-coherent;
+            reset-gpios = <&exp1 6 GPIO_ACTIVE_HIGH>;
+            phys = <&serdes0_pcie_link>;
+            phy-names = "pcie_phy";
+            ranges = <0x01000000 0x0 0x10001000  0x00 0x10001000  0x0 0x0010000>,
+                     <0x02000000 0x0 0x10011000  0x00 0x10011000  0x0 0x7fef000>;
+    };
-- 
2.17.1