From patchwork Wed Jan 25 18:44:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Hawkins, Nick" X-Patchwork-Id: 646788 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 75253C61DA3 for ; Wed, 25 Jan 2023 18:47:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235360AbjAYSrN (ORCPT ); Wed, 25 Jan 2023 13:47:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40018 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235394AbjAYSrH (ORCPT ); Wed, 25 Jan 2023 13:47:07 -0500 Received: from mx0b-002e3701.pphosted.com (mx0b-002e3701.pphosted.com [148.163.143.35]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 392C35619C; Wed, 25 Jan 2023 10:47:06 -0800 (PST) Received: from pps.filterd (m0148664.ppops.net [127.0.0.1]) by mx0b-002e3701.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 30PIFR3X011376; Wed, 25 Jan 2023 18:46:44 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hpe.com; h=from : to : subject : date : message-id; s=pps0720; bh=YKF5DYJPhIrVAXlXwOYGcigxfIp2850usBGmHFx3nA8=; b=gaap69jIIb8hib+X1L6pqyLaf3/+co2ECqJM6hIPlwMqUN4hdd30IUo2wTwAxeQ7dSBb YWIEYjsnwySEuM30V7NVUUwgeo9u5Nl1T6bIRXw2E0cvCN4dT17tUS8bqEiLtDem8rGS b/jDwYffL1xCQVtE0xN2Be/XRLIZ3rjwz2NiI3hxsFT+WvldpAQjvpiEbFcHqp+6w1cW XazRcNiGNWqnTAPnceIgnjddilZuLHRiiZUi2LK0uSqvKNl07QBJa4w/BT0puv8fo8fn lVc/Hoq9k4mCQwwm2XMx7gXjeLJ4HBFnNQ3uoOv/HESygu9XfTE/XEZqRF8T05IYfssm 4g== Received: from p1lg14879.it.hpe.com (p1lg14879.it.hpe.com [16.230.97.200]) by mx0b-002e3701.pphosted.com (PPS) with ESMTPS id 3nb9038jc3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 25 Jan 2023 18:46:44 +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 p1lg14879.it.hpe.com (Postfix) with ESMTPS id 78686336E0; Wed, 25 Jan 2023 18:46:43 +0000 (UTC) Received: from hpe.com (unknown [16.231.227.36]) by p1lg14885.dc01.its.hpecorp.net (Postfix) with ESMTP id 60FFB8089A9; Wed, 25 Jan 2023 18:46:42 +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, joel@jms.id.au Subject: [PATCH v4 0/5] ARM: Add GXP I2C Support Date: Wed, 25 Jan 2023 12:44:33 -0600 Message-Id: <20230125184438.28483-1-nick.hawkins@hpe.com> X-Mailer: git-send-email 2.17.1 X-Proofpoint-ORIG-GUID: X9Nx9LwVcbWGZu6MHNLStvYgxQbYRhOo X-Proofpoint-GUID: X9Nx9LwVcbWGZu6MHNLStvYgxQbYRhOo X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-01-25_12,2023-01-25_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 lowpriorityscore=0 adultscore=0 mlxscore=0 mlxlogscore=968 phishscore=0 clxscore=1015 spamscore=0 impostorscore=0 priorityscore=1501 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301250166 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.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. Acked-by: Wolfram Sang --- 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 | 603 ++++++++++++++++++ 8 files changed, 907 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml create mode 100644 drivers/i2c/busses/i2c-gxp.c