From patchwork Mon Oct 21 06:39:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dilip Kota X-Patchwork-Id: 11201411 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5C1C21390 for ; Mon, 21 Oct 2019 06:39:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 438182089C for ; Mon, 21 Oct 2019 06:39:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726072AbfJUGji (ORCPT ); Mon, 21 Oct 2019 02:39:38 -0400 Received: from mga07.intel.com ([134.134.136.100]:61000 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726039AbfJUGji (ORCPT ); Mon, 21 Oct 2019 02:39:38 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Oct 2019 23:39:37 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,322,1566889200"; d="scan'208";a="209255778" Received: from sgsxdev004.isng.intel.com (HELO localhost) ([10.226.88.13]) by orsmga002.jf.intel.com with ESMTP; 20 Oct 2019 23:39:32 -0700 From: Dilip Kota To: jingoohan1@gmail.com, gustavo.pimentel@synopsys.com, lorenzo.pieralisi@arm.com, andrew.murray@arm.com, robh@kernel.org, martin.blumenstingl@googlemail.com, linux-pci@vger.kernel.org, hch@infradead.org, devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org, andriy.shevchenko@intel.com, cheol.yong.kim@intel.com, chuanhua.lei@linux.intel.com, qi-ming.wu@intel.com, Dilip Kota Subject: [PATCH v4 1/3] dt-bindings: PCI: intel: Add YAML schemas for the PCIe RC controller Date: Mon, 21 Oct 2019 14:39:18 +0800 Message-Id: <710257e49c4b3d07fa98b3e5a829b807f74b54d7.1571638827.git.eswara.kota@linux.intel.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: References: In-Reply-To: References: Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add YAML shcemas for PCIe RC controller on Intel Gateway SoCs which is Synopsys DesignWare based PCIe core. changes on v4: Add "snps,dw-pcie" compatible. Rename phy-names property value to pcie. And maximum and minimum values to num-lanes. Add ref for reset-assert-ms entry and update the description for easy understanding. Remove pcie core interrupt entry. changes on v3: Add the appropriate License-Identifier Rename intel,rst-interval to 'reset-assert-us' Add additionalProperties: false Rename phy-names to 'pciephy' Remove the dtsi node split of SoC and board in the example Add #interrupt-cells = <1>; or else interrupt parsing will fail Name yaml file with compatible name Signed-off-by: Dilip Kota Reviewed-by: Andrew Murray --- .../devicetree/bindings/pci/intel-gw-pcie.yaml | 135 +++++++++++++++++++++ 1 file changed, 135 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/intel-gw-pcie.yaml diff --git a/Documentation/devicetree/bindings/pci/intel-gw-pcie.yaml b/Documentation/devicetree/bindings/pci/intel-gw-pcie.yaml new file mode 100644 index 000000000000..49dd87ec1e3d --- /dev/null +++ b/Documentation/devicetree/bindings/pci/intel-gw-pcie.yaml @@ -0,0 +1,135 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pci/intel-gw-pcie.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: PCIe RC controller on Intel Gateway SoCs + +maintainers: + - Dilip Kota + +properties: + compatible: + items: + - const: intel,lgm-pcie + - const: snps,dw-pcie + + device_type: + const: pci + + "#address-cells": + const: 3 + + "#size-cells": + const: 2 + + reg: + items: + - description: Controller control and status registers. + - description: PCIe configuration registers. + - description: Controller application registers. + + reg-names: + items: + - const: dbi + - const: config + - const: app + + ranges: + description: Ranges for the PCI memory and I/O regions. + + resets: + maxItems: 1 + + clocks: + description: PCIe registers interface clock. + + phys: + maxItems: 1 + + phy-names: + const: pcie + + reset-gpios: + maxItems: 1 + + num-lanes: + minimum: 1 + maximum: 2 + description: Number of lanes to use for this port. + + linux,pci-domain: + $ref: /schemas/types.yaml#/definitions/uint32 + description: PCI domain ID. + + '#interrupt-cells': + const: 1 + + interrupt-map-mask: + description: Standard PCI IRQ mapping properties. + + interrupt-map: + description: Standard PCI IRQ mapping properties. + + max-link-speed: + description: Specify PCI Gen for link capability. + + bus-range: + description: Range of bus numbers associated with this controller. + + reset-assert-ms: + $ref: /schemas/types.yaml#/definitions/uint32 + description: | + Delay after asserting reset to the PCIe device. + Some devices need an interval upto 500ms. By default it is 100ms. + +required: + - compatible + - device_type + - reg + - reg-names + - ranges + - resets + - clocks + - phys + - phy-names + - reset-gpios + - num-lanes + - linux,pci-domain + - interrupt-map + - interrupt-map-mask + +additionalProperties: false + +examples: + - | + pcie10:pcie@d0e00000 { + compatible = "intel,lgm-pcie", "snps,dw-pcie"; + device_type = "pci"; + #address-cells = <3>; + #size-cells = <2>; + reg = <0xd0e00000 0x1000>, + <0xd2000000 0x800000>, + <0xd0a41000 0x1000>; + reg-names = "dbi", "config", "app"; + linux,pci-domain = <0>; + max-link-speed = <4>; + bus-range = <0x00 0x08>; + interrupt-parent = <&ioapic1>; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0x7>; + interrupt-map = <0 0 0 1 &ioapic1 27 1>, + <0 0 0 2 &ioapic1 28 1>, + <0 0 0 3 &ioapic1 29 1>, + <0 0 0 4 &ioapic1 30 1>; + ranges = <0x02000000 0 0xd4000000 0xd4000000 0 0x04000000>; + resets = <&rcu0 0x50 0>; + clocks = <&cgu0 LGM_GCLK_PCIE10>; + phys = <&cb0phy0>; + phy-names = "pcie"; + status = "okay"; + reset-assert-ms = <500>; + reset-gpios = <&gpio0 3 GPIO_ACTIVE_LOW>; + num-lanes = <2>; + };