linux-kernel - [PATCH 2/6] Documetation: dt-bindings: add the samsung,exynos-pcie binding

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Date:   Mon, 19 Oct 2020 11:47:11 +0200
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     linux-samsung-soc@...r.kernel.org, linux-pci@...r.kernel.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Rob Herring <robh+dt@...nel.org>
Subject: [PATCH 2/6] Documetation: dt-bindings: add the samsung,exynos-pcie
 binding

From: Jaehoon Chung <jh80.chung@...sung.com>

Add dt-bindings for the Samsung Exynos PCIe controller (Exynos5433
variant).

Signed-off-by: Jaehoon Chung <jh80.chung@...sung.com>
[mszyprow: updated the binding to latest driver changes, rewrote it in yaml,
	   rewrote commit message]
Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
---
 .../bindings/pci/samsung,exynos-pcie.yaml     | 106 ++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml

diff --git a/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml b/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml
new file mode 100644
index 000000000000..48fb569c238c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml
@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/samsung,exynos-pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung SoC series PCIe Host Controller Device Tree Bindings
+
+maintainers:
+  - Jaehoon Chung <jh80.chung@...sung.com>
+
+description: |+
+  Exynos5433 SoC PCIe host controller is based on the Synopsys DesignWare
+  PCIe IP and thus inherits all the common properties defined in
+  designware-pcie.txt.
+
+allOf:
+  - $ref: /schemas/pci/pci-bus.yaml#
+
+properties:
+  compatible:
+    enum:
+      - samsung,exynos5433-pcie
+
+  reg:
+    items:
+      - description: External Local Bus interface (ELBI) registers.
+      - description: Data Bus Interface (DBI) registers.
+      - description: PCIe configuration space region.
+
+  reg-names:
+    items:
+      - const: elbi
+      - const: bdi
+      - const: config
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: PCIe bridge clock
+      - description: PCIe bus clock
+
+  clock-names:
+    items:
+      - const: pcie
+      - const: pcie_bus
+
+  phys:
+    maxItems: 1
+
+  phy-names:
+    const: pcie-phy
+
+  vdd10-supply:
+    description:
+      Phandle to a regulator that provides 1.0V power to the PCIe block.
+
+  vdd18-supply:
+    description:
+      Phandle to a regulator that provides 1.8V power to the PCIe block.
+
+required:
+  - reg
+  - reg-names
+  - interrupts
+  - interrupt-names
+  - clocks
+  - clock-names
+  - phys
+  - phy-names
+  - vdd10-supply
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/exynos5433.h>
+
+    pcie: pcie@...00000 {
+        compatible = "samsung,exynos5433-pcie";
+        reg = <0x156b0000 0x1000>, <0x15700000 0x1000>, <0x0c000000 0x1000>;
+        reg-names = "elbi", "dbi", "config";
+        #address-cells = <3>;
+        #size-cells = <2>;
+        #interrupt-cells = <1>;
+        device_type = "pci";
+        interrupts = <GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&cmu_fsys CLK_PCIE>, <&cmu_fsys CLK_PCLK_PCIE_PHY>;
+        clock-names = "pcie", "pcie_bus";
+        phys = <&pcie_phy>;
+        phy-names = "pcie-phy";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pcie_bus &pcie_wlanen>;
+        num-lanes = <1>;
+        bus-range = <0x00 0xff>;
+        ranges = <0x81000000 0 0	  0x0c001000 0 0x00010000>,
+                 <0x82000000 0 0x0c011000 0x0c011000 0 0x03feefff>;
+        vdd10-supply = <&ldo6_reg>;
+        vdd18-supply = <&ldo7_reg>;
+        iterrupt-map-mask = <0 0 0 0>;
+        interrupt-map = <0 0 0 0 &gic GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>;
+    };
-- 
2.17.1