linux-kernel - [PATCH v8 1/4] PCI: hisi: Add DT binding for PCIe of Kirin SoC series

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Message-ID: <20170526015333.92482-2-songxiaowei@hisilicon.com>
Date:   Fri, 26 May 2017 09:53:30 +0800
From:   Xiaowei Song <songxiaowei@...ilicon.com>
To:     <bhelgaas@...gle.com>, <kishon@...com>, <jingoohan1@...il.com>,
        <arnd@...db.de>, <tn@...ihalf.com>, <keith.busch@...el.com>,
        <niklas.cassel@...s.com>, <dhdang@....com>,
        <liudongdong3@...wei.com>, <gabriele.paoloni@...wei.com>,
        <robh+dt@...nel.org>, <mark.rutland@....com>,
        <catalin.marinas@....com>, <will.deacon@....com>
CC:     <chenyao11@...wei.com>, <puck.chen@...ilicon.com>,
        <songxiaowei@...ilicon.com>, <guodong.xu@...aro.org>,
        <wangbinghui@...ilicon.com>, <suzhuangluan@...ilicon.com>,
        <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v8 1/4] PCI: hisi: Add DT binding for PCIe of Kirin SoC series

Signed-off-by: Xiaowei Song <songxiaowei@...ilicon.com>
---
 .../devicetree/bindings/pci/kirin-pcie.txt         | 49 ++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/kirin-pcie.txt

diff --git a/Documentation/devicetree/bindings/pci/kirin-pcie.txt b/Documentation/devicetree/bindings/pci/kirin-pcie.txt
new file mode 100644
index 000000000000..2dd0e7a368ad
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/kirin-pcie.txt
@@ -0,0 +1,49 @@
+HiSilicon Kirin SoCs PCIe host DT description
+
+Kirin PCIe host controller is based on Designware PCI core.
+It shares common functions with PCIe Designware core driver
+and inherits common properties defined in
+Documentation/devicetree/bindings/pci/designware-pci.txt.
+
+Additional properties are described here:
+
+Required properties
+- compatible:
+	"hisilicon,kirin960-pcie" for PCIe of Kirin960 SoC
+- reg: Should contain rc_dbi, apb, phy, config registers location and length.
+- reg-names: Must include the following entries:
+  "dbi": controller configuration registers;
+  "apb": apb Ctrl register defined by Kirin;
+  "phy": apb PHY register defined by Kirin;
+  "config": PCIe configuration space registers.
+- reset-gpios: The gpio to generate PCIe perst assert and deassert signal.
+
+Optional properties:
+
+Example based on kirin960:
+
+        pcie@...00000 {
+                        compatible = "hisilicon,kirin-pcie";
+                        reg =  <0x0 0xf4000000 0x0 0x1000>, <0x0 0xff3fe000 0x0 0x1000>,
+                                 <0x0 0xf3f20000 0x0 0x40000>, <0x0 0xF4000000 0 0x2000>;
+                        reg-names = "dbi","apb","phy", "config";
+                        bus-range = <0x0  0x1>;
+                        #address-cells = <3>;
+                        #size-cells = <2>;
+                        device_type = "pci";
+                        ranges = <0x02000000 0x0 0x00000000 0x0 0xf5000000 0x0 0x2000000>;
+                        num-lanes = <1>;
+                        #interrupt-cells = <1>;
+                        interrupt-map-mask = <0xf800 0 0 7>;
+			interrupt-map = <0x0 0 0 2 &gic 0 0 0  283 4>,
+                                        <0x0 0 0 3 &gic 0 0 0  284 4>,
+                                        <0x0 0 0 4 &gic 0 0 0  285 4>;
+                        clocks = <&crg_ctrl HI3660_PCIEPHY_REF>,
+                                <&crg_ctrl HI3660_CLK_GATE_PCIEAUX>,
+                                <&crg_ctrl HI3660_PCLK_GATE_PCIE_PHY>,
+                                <&crg_ctrl HI3660_PCLK_GATE_PCIE_SYS>,
+                                <&crg_ctrl HI3660_ACLK_GATE_PCIE>;
+                        clock-names = "pcie_phy_ref", "pcie_aux",
+                                "pcie_apb_phy", "pcie_apb_sys", "pcie_aclk";
+                        reset-gpios = <&gpio11 1 0 >;
+        };
-- 
2.11.GIT