From patchwork Fri Feb 17 15:50:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Hawkins, Nick" X-Patchwork-Id: 13144978 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 99F65C05027 for ; Fri, 17 Feb 2023 15:56:49 +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:To: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=HR6R0WeoMhYosh3SpSbGmV8aexm8TY9YdmDDBYaNP94=; b=ISUznH1zty0ngu 5Q2repgYgC0WQijMi69wMJF173RSRUFvplCHqUdsxbnAVxHSnG5nEaQ3M806o3+wJIjw/NpVuwCNN 4ghPm9vxwybwdCIjEf2OiHr9DMgpLqBOJyqRTqukRWjdhbyeR4NxPSieTTwGqil03IyQw8tDTnTlI x0ILV3fXJLjf/u3UgGDyY9Ae6Dwx68PanBNQoAF88Q9a5o63DEYGsPIhxawjThFyAspuffgar8m7o XvwTnTfdISjxIpMO7YeRcX3MONqlsD+vsV/vITiPJ2ZAhb2kKOI3GWf+KZ2wSRtAa18H3ui+RV6lH uaFFSyT6sg2V6wMx6EmA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pT35Q-00Evlk-Tv; Fri, 17 Feb 2023 15:55:49 +0000 Received: from mx0a-002e3701.pphosted.com ([148.163.147.86]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pT34s-00Evbc-WF for linux-arm-kernel@lists.infradead.org; Fri, 17 Feb 2023 15:55:17 +0000 Received: from pps.filterd (m0134422.ppops.net [127.0.0.1]) by mx0b-002e3701.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 31HEP4UB005924; Fri, 17 Feb 2023 15:54:56 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hpe.com; h=from : to : subject : date : message-id; s=pps0720; bh=4OUr6pL09KN9lLfyZ7+aT6RKEnK7PkGU9uIG3Tj1ADg=; b=b/fB4xvy49JGUD/Ydgi91DeWbsfAE2O8PMTxvMScgqo3g3/M0LlUyxwkuyhGbXrVQrRR xApIp34Z2L+8o7WNL/bXSeyeBHElvawTQu/2wjymjc7pP1JHHPNuB/ew55662cBx4dW2 MQu6snhhckxCFoNFtAN30ylMSv73GzlPo62MqjUd6Uc/1KWIb1QDCqdkFAPtkbaYKOR7 vX6omDMVfqAD9fns8/QPUuxsX1Js5gn3FCfphfthrszoH0vWbwGOL0CI+Nef/eg3X3j4 FcqygeEzEVM3FlPi2GYOawY05qnoMdv8VCci6AC3xnRII83QM91XJczVBo8WNlBwJr8a CA== Received: from p1lg14880.it.hpe.com (p1lg14880.it.hpe.com [16.230.97.201]) by mx0b-002e3701.pphosted.com (PPS) with ESMTPS id 3ntbak8xk8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 17 Feb 2023 15:54:56 +0000 Received: from p1lg14885.dc01.its.hpecorp.net (unknown [10.119.18.236]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by p1lg14880.it.hpe.com (Postfix) with ESMTPS id 06508800354; Fri, 17 Feb 2023 15:54:54 +0000 (UTC) Received: from hpe.com (unknown [16.231.227.36]) by p1lg14885.dc01.its.hpecorp.net (Postfix) with ESMTP id D22978071C3; Fri, 17 Feb 2023 15:54:53 +0000 (UTC) From: nick.hawkins@hpe.com To: verdun@hpe.com, nick.hawkins@hpe.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, linux@armlinux.org.uk, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, wsa@kernel.org Subject: [PATCH v5 0/5] ARM: Add GXP I2C Support Date: Fri, 17 Feb 2023 09:50:49 -0600 Message-Id: <20230217155054.99757-1-nick.hawkins@hpe.com> X-Mailer: git-send-email 2.17.1 X-Proofpoint-ORIG-GUID: xXcB28YSWEo46jHpmwW9z7fsc_bV8GxF X-Proofpoint-GUID: xXcB28YSWEo46jHpmwW9z7fsc_bV8GxF X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-17_10,2023-02-17_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 malwarescore=0 mlxlogscore=952 bulkscore=0 spamscore=0 lowpriorityscore=0 suspectscore=0 mlxscore=0 impostorscore=0 priorityscore=1501 clxscore=1015 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302170140 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230217_075515_072403_4F661C7D X-CRM114-Status: GOOD ( 18.30 ) 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 The GXP SoC supports 10 I2C engines. Each I2C engine is completely independent and can function both as an I2C master and I2C slave. The I2C master can operate in a multi master environment. The engines support a scalable speed from 8kHZ to 1.5 Mhz. --- Changes since v4: *Removed use of i2c_global_init_done *Removed use of if else case for inline conditional *Removed error messages for timeouts and NACKS *Added bit definitions to replace magic values *Fix build error *Relocate Kconfig definition Changes since v3: *Switch engine variable to u32 *Disable IRQ on device remove with register write instead *Provided even greater description with the use of Phandle Changes since v2: *Disable IRQ on a device remove *Remove use of I2C_CLASS_DEPRECATED *Use i2c_parse_fw_timings instead of of_property_read_u32 *Remove redundant dev_err_probe as platform_get_irq already has one *Used __iomem instead of res->start to find physical address *Use BIT in gxp_i2c_irq_handler *Made value u8 instead of u16 for u8 read *Provided a better description of Phandle in yaml Changes since v1: *Removed yaml documentation of hpe,gxp-sysreg as it has been applied to syscon.yaml *Made i2cX a generic node name i2c in dts file *Added status field to the dtsi and the dts for i2c bus *Removed unnecessary size-cells and address-cells from yaml *Removed phandle from hpe,sysreg-phandle *Changed hpe,i2c-max-bus-freq to clock-frequency *Removed rogue tab in structure definition *Removed use of __iomem *base local variables as it was unnecessary *Switched #if IS_ENABLED() -> if (IS_ENABLED()) inside functions *Removed use of pr_* functions *Removed informational prints in register and unregister functions *Removed print from interrupt handler *Removed informational prints from probe function *Switched dev_err -> dev_err_probe in probe function *Used the respective helper for mapping the resource to __iomem* Nick Hawkins (5): i2c: hpe: Add GXP SoC I2C Controller dt-bindings: i2c: Add hpe,gxp-i2c ARM: dts: hpe: Add I2C Topology ARM: multi_v7_defconfig: add gxp i2c module MAINTAINERS: Add HPE GXP I2C Support .../devicetree/bindings/i2c/hpe,gxp-i2c.yaml | 59 ++ MAINTAINERS | 2 + arch/arm/boot/dts/hpe-bmc-dl360gen10.dts | 109 +++ arch/arm/boot/dts/hpe-gxp.dtsi | 125 ++++ arch/arm/configs/multi_v7_defconfig | 1 + drivers/i2c/busses/Kconfig | 7 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-gxp.c | 620 ++++++++++++++++++ 8 files changed, 924 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml create mode 100644 drivers/i2c/busses/i2c-gxp.c