From patchwork Fri Dec 12 17:13:59 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanimir Varbanov X-Patchwork-Id: 420597 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 53CD214009B for ; Sat, 13 Dec 2014 04:18:12 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031102AbaLLRR6 (ORCPT ); Fri, 12 Dec 2014 12:17:58 -0500 Received: from ns.mm-sol.com ([37.157.136.199]:33728 "EHLO extserv.mm-sol.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030596AbaLLRRz (ORCPT ); Fri, 12 Dec 2014 12:17:55 -0500 Received: from localhost.localdomain (unknown [37.157.136.206]) by extserv.mm-sol.com (Postfix) with ESMTPSA id 733B5C844; Fri, 12 Dec 2014 19:17:53 +0200 (EET) From: Stanimir Varbanov To: Rob Herring , Kumar Gala , Mark Rutland , Grant Likely , Bjorn Helgaas , Kishon Vijay Abraham I , Russell King , Arnd Bergmann Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, Stanimir Varbanov Subject: [PATCH 3/5] DT: PCI: qcom: Document PCIe devicetree bindings Date: Fri, 12 Dec 2014 19:13:59 +0200 Message-Id: <1418404441-5518-4-git-send-email-svarbanov@mm-sol.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1418404441-5518-1-git-send-email-svarbanov@mm-sol.com> References: <1418404441-5518-1-git-send-email-svarbanov@mm-sol.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Document Qualcomm PCIe driver devicetree bindings. Signed-off-by: Stanimir Varbanov --- .../devicetree/bindings/pci/qcom,pcie.txt | 159 ++++++++++++++++++++ 1 files changed, 159 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.txt diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt new file mode 100644 index 0000000..2331144 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt @@ -0,0 +1,159 @@ +* Qualcomm PCI express root complex + +- compatible: + Usage: required + Value type: + Definition: Value shall include "qcom,pcie" + +- reg: + Usage: required + Value type: + Definition: Four register ranges as listed in the reg-names property + +- reg-names: + Usage: required + Value type: + Definition: Must include the following entries + - "parf" Qualcomm specific registers + - "dbi" Designware PCIe registers + - "elbi" External local bus interface registers + - "config" PCIe configuration space + +- device_type: + Usage: required + Value type: + Definition: Should be "pci". As specified in designware-pcie.txt + +- #address-cells: + Usage: required + Value type: + Definition: Should be set to 3. As specified in designware-pcie.txt + +- #size-cells: + Usage: required + Value type: + Definition: Should be set 2. As specified in designware-pcie.txt + +- ranges: + Usage: required + Value type: + Definition: As specified in designware-pcie.txt + +- interrupts: + Usage: required + Value type: + Definition: MSI interrupt + +- interrupt-names: + Usage: required + Value type: + Definition: Should contain "msi" + +- #interrupt-cells: + Usage: required + Value type: + Definition: Should be 1. As specified in designware-pcie.txt + +- interrupt-map-mask: + Usage: required + Value type: + Definition: As specified in designware-pcie.txt + +- interrupt-map: + Usage: required + Value type: + Definition: As specified in designware-pcie.txt + +- clocks: + Usage: required + Value type: + Definition: Four clocks as listed in clock-names property + +- clock-names: + Usage: required + Value type: + Definition: Must include the following entries + - "aux" auxiliary (AUX) clock + - "iface" configuration AHB clock + - "bus_master" master AXI clock + - "bus_slave" slave AXI clock + +- resets: + Usage: required + Value type: + Definition: List of phandle and reset specifier pairs as listed + in reset-names property + +- reset-names: + Usage: required + Value type: + Definition: Should contain the following entries + - "core" core reset + +- -supply: + Usage: required + Value type: + Definition: List of phandles to the supply regulators + - "vdd_pc" collapsing and restoring power to peripheral +- gpios: + Usage: optional + Value type: + Definition: List of phandle and gpio specifier. Should include + - "perst" PCIe endpoint reset signal line + - "pewake" PCIe endpoint wake signal line + +- pinctrl-0: + Usage: required + Value type: + Definition: List of phandles pointing at a pin(s) configuration + +- pinctrl-names + Usage: required + Value type: + Definition: List of names of pinctrl-0 state + +* Example + + pcie0@fc520000 { + compatible = "qcom,pcie"; + reg = <0xfc520000 0x2000>, + <0xff000000 0x1000>, + <0xff001000 0x1000>, + <0xff002000 0x2000>; + reg-names = "parf", "dbi", "elbi", "config"; + device_type = "pci"; + linux,pci-domain = <0>; + bus-range = <0x00 0xff>; + num-lanes = <1>; + #address-cells = <3>; + #size-cells = <2>; + ranges = <0x81000000 0 0 0xff200000 0 0x00100000 /* I/O */ + 0x82000000 0 0x00300000 0xff300000 0 0x00d00000>; /* Memory */ + interrupts = <0 243 0>; + interrupt-names = "msi"; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0x7>; + interrupt-map = <0 0 0 1 &intc 0 244 IRQ_TYPE_LEVEL_HIGH>, /* int_a */ + <0 0 0 2 &intc 0 245 IRQ_TYPE_LEVEL_HIGH>, /* int_b */ + <0 0 0 3 &intc 0 247 IRQ_TYPE_LEVEL_HIGH>, /* int_c */ + <0 0 0 4 &intc 0 248 IRQ_TYPE_LEVEL_HIGH>; /* int_d */ + + clocks = <&gcc GCC_PCIE_0_AUX_CLK>, + <&gcc GCC_PCIE_0_CFG_AHB_CLK>, + <&gcc GCC_PCIE_0_MSTR_AXI_CLK>, + <&gcc GCC_PCIE_0_SLV_AXI_CLK>; + clock-names = "aux", "iface", "master_bus", "slave_bus"; + + resets = <&gcc GCC_PCIE_0_BCR>; + reset-names = "core"; + + vdd_pc-supply = <&gdsc_pcie0>; + + phys = <&pciephy0>; + phy-names = "pciephy"; + + gpios = <&tlmm 70 0>; /* perst */ + + pinctrl-0 = <&pcie0_pins_default>; + pinctrl-names = "default"; + };