From patchwork Fri Jul 22 21:49:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Hawkins, Nick" X-Patchwork-Id: 12926901 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D19A9C43334 for ; Fri, 22 Jul 2022 21:49:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:Subject:Cc:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; 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Fri, 22 Jul 2022 21:48:06 +0000 (UTC) Received: from hpe.com (unknown [16.231.227.36]) by p1lg14886.dc01.its.hpecorp.net (Postfix) with ESMTP id 463038032AD; Fri, 22 Jul 2022 21:48:05 +0000 (UTC) From: nick.hawkins@hpe.com To: nick.hawkins@hpe.com Cc: broonie@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, verdun@hpe.com, linux@armlinux.org.uk, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, arnd@arndb.de, joel@jms.id.au Subject: [PATCH v3 0/5] Add SPI Driver to HPE GXP Architecture Date: Fri, 22 Jul 2022 16:49:15 -0500 Message-Id: <20220722214920.40485-1-nick.hawkins@hpe.com> X-Mailer: git-send-email 2.17.1 X-Proofpoint-ORIG-GUID: hQ5rnSRM9hxvywIVPFSSPwuS6UK6U-Yz X-Proofpoint-GUID: hQ5rnSRM9hxvywIVPFSSPwuS6UK6U-Yz X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-22_06,2022-07-21_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 clxscore=1015 bulkscore=0 lowpriorityscore=0 malwarescore=0 adultscore=0 mlxlogscore=435 spamscore=0 mlxscore=0 suspectscore=0 priorityscore=1501 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2206140000 definitions=main-2207220089 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220722_144822_577268_9156D3E2 X-CRM114-Status: GOOD ( 19.84 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Nick Hawkins Changes since v3: *Fixed indentations in hpe,gxp-spifi.yaml Changes since v2: *Changed the CONFIG_SPI_GXP from y to m in defconfig *Removed extra space around < > for reg in hpe,gxp-spifi.yaml *Changed interrupt-parrent to interrupt-parent in hpe,gxp-spifi.yaml *Removed repeated include file in spi-gxp.c *Removed unnecessary initialization of ret variable in spi-gxp.c *Removed conditional variable checks where failure is not possible in spi-gxp.c *Removed unecessary variable cs in spi-gxp.c *Removed blank gxp-spifi-remove function in spi-gxp.c *Fixed error messages so they are not repetitive The GXP supports 3 separate SPI interfaces to accommodate the system flash, core flash, and other functions. The SPI engine supports variable clock frequency, selectable 3-byte or 4-byte addressing and a configurable x1, x2, and x4 command/address/data modes. The memory buffer for reading and writing ranges between 256 bytes and 8KB. This driver supports access to the core flash and bios part. Nick Hawkins (5): spi: spi-gxp: Add support for HPE GXP SoCs spi: dt-bindings: add documentation for hpe,gxp-spifi ARM: dts: hpe: Add spi driver node ARM: configs: multi_v7_defconfig: Enable HPE GXP SPI driver MAINTAINERS: add spi support to GXP .../bindings/spi/hpe,gxp-spifi.yaml | 56 +++ MAINTAINERS | 2 + arch/arm/boot/dts/hpe-bmc-dl360gen10.dts | 58 ++++ arch/arm/boot/dts/hpe-gxp.dtsi | 21 +- arch/arm/configs/multi_v7_defconfig | 1 + drivers/spi/Kconfig | 7 + drivers/spi/Makefile | 1 + drivers/spi/spi-gxp.c | 325 ++++++++++++++++++ 8 files changed, 470 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/spi/hpe,gxp-spifi.yaml create mode 100644 drivers/spi/spi-gxp.c