From patchwork Mon Jul 18 10:17:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivan Bornyakov X-Patchwork-Id: 12921085 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D93A1C43334 for ; Mon, 18 Jul 2022 10:20:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234076AbiGRKS0 (ORCPT ); Mon, 18 Jul 2022 06:18:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60476 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234028AbiGRKSW (ORCPT ); Mon, 18 Jul 2022 06:18:22 -0400 Received: from mail.pr-group.ru (mail.pr-group.ru [178.18.215.3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 081401C913; Mon, 18 Jul 2022 03:18:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=metrotek.ru; s=mail; h=from:subject:date:message-id:to:cc:mime-version:content-transfer-encoding: in-reply-to:references; bh=5/FAUSr7rD53CB44v/5gazrz/qXYw+k0RFzlnAZEjRM=; b=AvOPxN3VwIWVhtGZlP+WMwFWYYJCrn+k/3fQ8OgUtDC6S40qFq2A3mFg3q8yf4wd3Qt5PdGaz4O5t Y2SHKPAE1y9soPxLGgMbVONi/czdzU9doAsoXDq5JMlFUqaUQebdovD8jiFS0zfa2zn4Ov07oYOq8R 8nxm/bWoQ7tyz2vUPNd22hT/D7BvuHgV6nsI9X2Yhe2Xg1IDhSR4FtcB2FK+joI5J1u/tOUfr4UVgF 1mZLua3NiweYq+3ABi0Yo3j4SHG2+g45rnpoQM0GTbPyl8xHrsYIpCxnNoGS1UUmGtsaobsvpUP4j3 GSNQJVZ7kBl//DJS5tkKJc+u63TiY/g== X-Kerio-Anti-Spam: Build: [Engines: 2.16.3.1424, Stamp: 3], Multi: [Enabled, t: (0.000008,0.010467)], BW: [Enabled, t: (0.000025,0.000001)], RTDA: [Enabled, t: (0.073008), Hit: No, Details: v2.40.0; Id: 15.52k6aa.1g88d19th.2v5i8; mclb], total: 0(700) X-Footer: bWV0cm90ZWsucnU= Received: from h-e2.ddg ([85.143.252.66]) (authenticated user i.bornyakov@metrotek.ru) by mail.pr-group.ru with ESMTPSA (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256 bits)); Mon, 18 Jul 2022 13:18:04 +0300 From: Ivan Bornyakov To: mdf@kernel.org, hao.wu@intel.com, yilun.xu@intel.com, trix@redhat.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org Cc: Ivan Bornyakov , linux-fpga@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, system@metrotek.ru Subject: [PATCH v2 2/2] dt-bindings: fpga: add binding doc for ecp5-spi fpga mgr Date: Mon, 18 Jul 2022 13:17:35 +0300 Message-Id: <20220718101735.26696-3-i.bornyakov@metrotek.ru> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220718101735.26696-1-i.bornyakov@metrotek.ru> References: <20220718101735.26696-1-i.bornyakov@metrotek.ru> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org Add Device Tree Binding doc for Lattice ECP5 FPGA manager using slave SPI to load .bit formatted uncompressed bitstream image. Signed-off-by: Ivan Bornyakov --- .../bindings/fpga/lattice,ecp5-fpga-mgr.yaml | 73 +++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/fpga/lattice,ecp5-fpga-mgr.yaml diff --git a/Documentation/devicetree/bindings/fpga/lattice,ecp5-fpga-mgr.yaml b/Documentation/devicetree/bindings/fpga/lattice,ecp5-fpga-mgr.yaml new file mode 100644 index 000000000000..95c24e4c6023 --- /dev/null +++ b/Documentation/devicetree/bindings/fpga/lattice,ecp5-fpga-mgr.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/fpga/lattice,ecp5-fpga-mgr.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Lattice ECP5 Slave SPI FPGA manager. + +maintainers: + - Ivan Bornyakov + +description: + FPGA Manager capable to program Lattice ECP5 with uncompressed bitstream + image in .bit format over SPI. + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml + +properties: + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 60000000 + + compatible: + enum: + - lattice,ecp5-fpga-mgr + + program-gpios: + description: + A GPIO line connected to PROGRAMN (active low) pin of the device. + Initiates configuration sequence. + maxItems: 1 + + init-gpios: + description: + A GPIO line connected to INITN (active low) pin of the device. + Indicates that the FPGA is ready to be configured. + maxItems: 1 + + done-gpios: + description: + A GPIO line connected to DONE (active high) pin of the device. + Indicates that the configuration sequence is complete. + maxItems: 1 + +required: + - compatible + - reg + - program-gpios + - init-gpios + - done-gpios + +additionalProperties: false + +examples: + - | + #include + + spi { + #address-cells = <1>; + ##size-cells = <0>; + + fpga-mgr@0 { + compatible = "lattice,ecp5-fpga-mgr"; + spi-max-frequency = <20000000>; + reg = <0>; + program-gpios = <&gpio3 4 GPIO_ACTIVE_LOW>; + init-gpios = <&gpio3 3 GPIO_ACTIVE_LOW>; + done-gpios = <&gpio3 2 GPIO_ACTIVE_HIGH>; + }; + };