{"id":2220804,"url":"http://patchwork.ozlabs.org/api/1.1/covers/2220804/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-i2c/cover/20260408053037.1867092-1-a0282524688@gmail.com/","project":{"id":35,"url":"http://patchwork.ozlabs.org/api/1.1/projects/35/?format=json","name":"Linux I2C development","link_name":"linux-i2c","list_id":"linux-i2c.vger.kernel.org","list_email":"linux-i2c@vger.kernel.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260408053037.1867092-1-a0282524688@gmail.com>","date":"2026-04-08T05:30:35","name":"[v2,0/2] mfd: nct6694: Refactor transport layer and add HIF (eSPI) support","submitter":{"id":89578,"url":"http://patchwork.ozlabs.org/api/1.1/people/89578/?format=json","name":"Ming Yu","email":"a0282524688@gmail.com"},"mbox":"http://patchwork.ozlabs.org/project/linux-i2c/cover/20260408053037.1867092-1-a0282524688@gmail.com/mbox/","series":[{"id":499071,"url":"http://patchwork.ozlabs.org/api/1.1/series/499071/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-i2c/list/?series=499071","date":"2026-04-08T05:30:35","name":"mfd: nct6694: Refactor transport layer and add HIF (eSPI) support","version":2,"mbox":"http://patchwork.ozlabs.org/series/499071/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2220804/comments/","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-i2c@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=V8ZWPWMq;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; helo=sea.lore.kernel.org;\n envelope-from=linux-i2c+bounces-16985-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com\n header.b=\"V8ZWPWMq\"","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=209.85.214.179","smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com","smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=gmail.com"],"Received":["from sea.lore.kernel.org (sea.lore.kernel.org [172.234.253.10])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4frBWD51cGz1xtJ\n\tfor ; Wed, 08 Apr 2026 15:31:20 +1000 (AEST)","from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sea.lore.kernel.org (Postfix) with ESMTP id E8DC3302630F\n\tfor ; Wed, 8 Apr 2026 05:30:59 +0000 (UTC)","from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id BF720357739;\n\tWed, 8 Apr 2026 05:30:57 +0000 (UTC)","from mail-pl1-f179.google.com (mail-pl1-f179.google.com\n [209.85.214.179])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id CC6AD2FFF99\n\tfor ; Wed, 8 Apr 2026 05:30:55 +0000 (UTC)","by mail-pl1-f179.google.com with SMTP id\n d9443c01a7336-2ab39b111b9so25186805ad.1\n for ; Tue, 07 Apr 2026 22:30:55 -0700 (PDT)","from hcdev-d520mt2.. (60-250-196-139.hinet-ip.hinet.net.\n [60.250.196.139])\n by smtp.gmail.com with ESMTPSA id\n d9443c01a7336-2b27472d098sm181673475ad.13.2026.04.07.22.30.51\n (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n Tue, 07 Apr 2026 22:30:54 -0700 (PDT)"],"ARC-Seal":"i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1775626257; cv=none;\n b=O1Ze4Kj5V9CD72Miflj1/RLR8MX37caaIcrw1JzoAIt2bEy+czoqP6VowhG5V9PvfBY84IzkczJEkY5VUraOqcZ07js3yVvrZYeZMhXq5Or6VtvuVqNG2OCjiCt7pHiM1+i/pDciX2GHFZmoF0ViiciaJ9Ue/zLc3WiOq2IHsOs=","ARC-Message-Signature":"i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1775626257; c=relaxed/simple;\n\tbh=2bvutzs7rtzWgmeamR13PJ6ItU9+5Cs+DqdG83Mabhw=;\n\th=From:To:Cc:Subject:Date:Message-Id:MIME-Version;\n b=bv3Z57GdrzFlTmVhWMCvz8XZvptaN7buLxP5jG8y83Y+O0m1NJcqvHExagEN1om7+J45fzbCXYfP6I3oNgML0jZUPrXRBTlK4ukWEn9UGVwnPRQx/CNWi5FMDusGzfKoQbxxKhmtMx6VZgwldm/Mt23o4d3/bcSMp6lbf7dvEnY=","ARC-Authentication-Results":"i=1; smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com;\n spf=pass smtp.mailfrom=gmail.com;\n dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com\n header.b=V8ZWPWMq; arc=none smtp.client-ip=209.85.214.179","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=gmail.com; s=20251104; t=1775626255; x=1776231055;\n darn=vger.kernel.org;\n h=content-transfer-encoding:mime-version:message-id:date:subject:cc\n :to:from:from:to:cc:subject:date:message-id:reply-to;\n bh=G261iPgwxdDm9fBlFNsCEO8KxZODyeiwStlQ3uz07JM=;\n b=V8ZWPWMqIM0a1pIwCeYyr7S7yp7Dco1DstdcGm8g9rxA29Efde1Roj1i5rcE4iBJPn\n fsHLZhnXE8c5cggjmHM42eT3uoMXlTw9pZqUvlB3J4qUmJGuMa8PihJgxOtHA7TJKbWq\n iczR2H/A2QgWbT1TY4Px2AKvigew9sNEWySTDTHoYPFVuKUmjdfKRNzOoAee4afwiNHW\n p2NCoIgnkBIC9MQKNROYRzF+hy7M35Rt4B4StKYoRWTerL4bCioqceGnedGlFVb1zLiy\n RA1vi4luuCyS44b25VMz0M6Q1tLapccjDStg10ebjYnZvPar3u5zqJ6xshcsqGpBIk6e\n 8Lzw==","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1775626255; x=1776231055;\n h=content-transfer-encoding:mime-version:message-id:date:subject:cc\n :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date\n :message-id:reply-to;\n bh=G261iPgwxdDm9fBlFNsCEO8KxZODyeiwStlQ3uz07JM=;\n b=m0BEYkiS37w4wH6Ee09lg4pqTkt6FQUzKfe42nQRReKV+BxOxxr/C+ANFPpH5IIJhl\n zq3/LvkExR60TeEA3dQ7v67cig3dqMQ2YbDvJik5lWG4ujzcrrwskk4pNJHl8Swpizs4\n 8HijO7Zf4WOrOdU7GXkEueARhmwp1ZgYqU/w5Gk+dE/sPpEH3bv8eppx99Cr9yPWbgVn\n MHMjAZ3VqOCuCsHpglWdROFFcaUNNgxbmjSJSTCkbHZih/0K87EDniZEig95nV4VmVuG\n q/loFXLUoYGfjQLr3O4GYkJQrJ9d9F14Jphdo/B57au3syayjgpOgnNsmiAy/TjLHa21\n jN2A==","X-Forwarded-Encrypted":"i=1;\n AJvYcCVCmx7Up+sBzgGp5WBytQmao4/HCt/NVWHj/NPssDFCHkTIOQNXBVYW3Ltro7DQb5SB02ZNAfws2gY=@vger.kernel.org","X-Gm-Message-State":"AOJu0Yzy6FH5gRuxun7qx4KJ73qmG1b6wjtToC3rcLGp3UTz2t0W4d3m\n\t0npx6Ca4AJAtOWhhb930MQhNY4irF+sigbRn7n2mfr11ncaJGvJnryHH","X-Gm-Gg":"AeBDietwNWPRwt0PVa1VkKf9WWy84xsmmJaueWa+GrVHFWbDZco7lX2RKN6VUc93hzu\n\teLLeQRify8K7XMQbbOU0og8rQDAbmPdgGoHXrDCzzyQQxpWWRmMeMQJhkkvJI0pFe7bifpkcNb2\n\tAeTgsR0BTQXQnKEM2FCIKDC/LCOxlHfvxSVRem6X695XhIDuyEgOkB1skQlC8TQr6GyjnVQzTDJ\n\tx5NRJWGgKXUG9k0P2vHGkxdUUzNKbuwWIy3DIKylJxQczEbiJHcA8SLP3qYPqjIhQfoccSNPlpG\n\tqd/MvRbN1Q9dfxnKzVIZ722INA++I6AuFYh/QfIAe1YCQDR7TZ4+qc0RNEaif2VIRsh+FRCfnfA\n\t5+EhmOwaeniFt7pic0I4xu4QW2WEBMnx6A2NcDLsMBqH80CeTBPDnay6f4FBA6rK4T+cGVu0xM8\n\tGH/K4xIi7hBEG5lhLaHg1wxM5S4Q17PcDBmsYD21/ZgvSw2A7t5yNwRjEsdVxLfrtgoDoYYQifm\n\tfls","X-Received":"by 2002:a17:902:e78b:b0:2b2:57df:264d with SMTP id\n d9443c01a7336-2b28178c3b7mr208603985ad.33.1775626255168;\n Tue, 07 Apr 2026 22:30:55 -0700 (PDT)","From":"a0282524688@gmail.com","To":"tmyu0@nuvoton.com,\n\tlinusw@kernel.org,\n\tbrgl@kernel.org,\n\tlinux@roeck-us.net,\n\tandi.shyti@kernel.org,\n\tlee@kernel.org,\n\tmkl@pengutronix.de,\n\tmailhol@kernel.org,\n\talexandre.belloni@bootlin.com,\n\twim@linux-watchdog.org","Cc":"linux-kernel@vger.kernel.org,\n\tlinux-gpio@vger.kernel.org,\n\tlinux-i2c@vger.kernel.org,\n\tlinux-can@vger.kernel.org,\n\tnetdev@vger.kernel.org,\n\tlinux-watchdog@vger.kernel.org,\n\tlinux-hwmon@vger.kernel.org,\n\tlinux-rtc@vger.kernel.org,\n\tlinux-usb@vger.kernel.org,\n\tMing Yu ","Subject":"[PATCH v2 0/2] mfd: nct6694: Refactor transport layer and add HIF\n (eSPI) support","Date":"Wed, 8 Apr 2026 13:30:35 +0800","Message-Id":"<20260408053037.1867092-1-a0282524688@gmail.com>","X-Mailer":"git-send-email 2.34.1","Precedence":"bulk","X-Mailing-List":"linux-i2c@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit"},"content":"From: Ming Yu \n\nThe Nuvoton NCT6694 is a peripheral expander that provides GPIO, I2C,\nCAN-FD, Watchdog, HWMON, PWM, and RTC sub-devices. Currently, the\ndriver only supports USB as the host transport interface.\n\nThis series refactors the NCT6694 MFD core to support multiple transport\nbackends and adds a new Host Interface (HIF) transport driver that\ncommunicates over eSPI using Super-I/O shared memory.\n\nChanges since version 1:\n- Reworked the Super-I/O access helpers.\n\nMing Yu (2):\n mfd: nct6694: Switch to devm_mfd_add_devices() and drop IDA\n mfd: Add Host Interface (HIF) support for Nuvoton NCT6694\n\n MAINTAINERS | 1 +\n drivers/gpio/gpio-nct6694.c | 26 +-\n drivers/hwmon/nct6694-hwmon.c | 21 -\n drivers/i2c/busses/i2c-nct6694.c | 26 +-\n drivers/mfd/Kconfig | 47 ++-\n drivers/mfd/Makefile | 3 +-\n drivers/mfd/nct6694-hif.c | 634 ++++++++++++++++++++++++++++\n drivers/mfd/nct6694.c | 180 ++++----\n drivers/net/can/usb/nct6694_canfd.c | 18 +-\n drivers/rtc/rtc-nct6694.c | 7 -\n drivers/watchdog/nct6694_wdt.c | 27 +-\n include/linux/mfd/nct6694.h | 57 ++-\n 12 files changed, 814 insertions(+), 233 deletions(-)\n create mode 100644 drivers/mfd/nct6694-hif.c"}