From patchwork Thu Jul 14 12:26:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivan Bornyakov X-Patchwork-Id: 12917813 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 1BF7ACCA47B for ; Thu, 14 Jul 2022 12:29:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237787AbiGNM2A (ORCPT ); Thu, 14 Jul 2022 08:28:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42586 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231721AbiGNM17 (ORCPT ); Thu, 14 Jul 2022 08:27:59 -0400 Received: from mail.pr-group.ru (mail.pr-group.ru [178.18.215.3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 445021CFC3; Thu, 14 Jul 2022 05:27:55 -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=0Q3bhArdusZeLQoNXIpOd+baan20fcaHIGQ/15fTlTU=; b=CKomOUxGi4koCxEQnepKxzV/0On8S9ZJ9lfh9sIGTzG9ibVmiF4lZXbvLUACkP5bRjKtgmzmIGvIK luF05zE7ddkTcVKXDkYcWrf0TRsjRIyrME1PK5xSXsHmUyQ2GFnfCu1jF842NLKQeUDRdbF1X96wv1 GNCOSmPd4FvB/r3sSv1BX3nLGYhvyMdfPA5TFt4FwmbXWjVmmZshShuDtG0tLS2uWhYBqVruq/8fGu 7K2S8qdW3u+6NOsubIXjfHIcoGAHchvCftwtaSTSfz5zbDxQOnRCcCgbQd21ZalZmpN0V6xTIQ2Spz bXH95oMck3U1bt6OjLFQTQootToj7Ng== X-Kerio-Anti-Spam: Build: [Engines: 2.16.3.1424, Stamp: 3], Multi: [Enabled, t: (0.000008,0.010508)], BW: [Enabled, t: (0.000020,0.000001)], RTDA: [Enabled, t: (0.079403), Hit: No, Details: v2.40.0; Id: 15.52k6in.1g7uar8jn.1m6s8; 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)); Thu, 14 Jul 2022 15:27:23 +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 2/2] dt-bindings: fpga: add binding doc for ecp5-spi fpga mgr Date: Thu, 14 Jul 2022 15:26:57 +0300 Message-Id: <20220714122657.17972-3-i.bornyakov@metrotek.ru> X-Mailer: git-send-email 2.37.0 In-Reply-To: <20220714122657.17972-1-i.bornyakov@metrotek.ru> References: <20220714122657.17972-1-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 --- .../fpga/lattice,ecp5-spi-fpga-mgr.yaml | 71 +++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 Documentation/devicetree/bindings/fpga/lattice,ecp5-spi-fpga-mgr.yaml diff --git a/Documentation/devicetree/bindings/fpga/lattice,ecp5-spi-fpga-mgr.yaml b/Documentation/devicetree/bindings/fpga/lattice,ecp5-spi-fpga-mgr.yaml new file mode 100644 index 000000000000..79868f9c84e2 --- /dev/null +++ b/Documentation/devicetree/bindings/fpga/lattice,ecp5-spi-fpga-mgr.yaml @@ -0,0 +1,71 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/fpga/lattice,ecp5-spi-fpga-mgr.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Lattice ECP5 FPGA manager. + +maintainers: + - Ivan Bornyakov + +description: + Device Tree Bindings for Lattice ECP5 FPGA Manager using slave SPI to + load the uncompressed bitstream in .bit format. + +properties: + compatible: + enum: + - lattice,ecp5-spi-fpga-mgr + + reg: + description: SPI chip select + maxItems: 1 + + spi-max-frequency: + maximum: 60000000 + + 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 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-spi-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>; + }; + };