From patchwork Sat Nov 14 09:12:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pragnesh Patel X-Patchwork-Id: 1400244 X-Patchwork-Delegate: hs@denx.de Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=sifive.com header.i=@sifive.com header.a=rsa-sha256 header.s=selector1 header.b=pXBlwthJ; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4CY8ms6STlz9sTc for ; Sat, 14 Nov 2020 20:14:53 +1100 (AEDT) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 598B782543; Sat, 14 Nov 2020 10:13:58 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (1024-bit key; unprotected) header.d=sifive.com header.i=@sifive.com header.b="pXBlwthJ"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 4F6E58232D; Sat, 14 Nov 2020 10:13:27 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FORGED_SPF_HELO,MSGID_FROM_MTA_HEADER, SPF_HELO_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.2 Received: from NAM11-BN8-obe.outbound.protection.outlook.com (mail-bn8nam11on20628.outbound.protection.outlook.com [IPv6:2a01:111:f400:7eae::628]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 610D48232D for ; Sat, 14 Nov 2020 10:13:17 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=pragnesh.patel@openfive.com ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=m9ldiQ5MJExxLorjtJ425j0a/j6hL1O2AIEwkfuN2oan60IApu6dngsMHw8tjCteZva1uoXhizDXgMyUuwadMiRMyRxg+FsugPWQEBGiWKX+s4M1TSbWA7ooBldGCJJV9gPvLP2OpjS+ME6C4Y6N1O8HEsXn5sTUQYUQbbyJhzT2QYOaUnmewDQILDUJMAYIUmc9UA5YyHQMjrQZ1sNZVqQwMc8WDEY7z6urcESdP+aBk4BldyeKjIXszoBJ7ZlSrOXcE+X2mewkKbXfm1X25i8rK1vEMh3Jmy0MunLyFhG7/3Q3S6SH6IRMNTEvRC7TNij41BQb+spaDqjSR4cBqg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=i4858OVKAfB5O5BpfF9vkt5kdll7bxiyoqbWvZC05gU=; b=WfSRgJQbFA4snJRFx5fbb85Qtk6V/dr0wNPoRgFYOiwehNK6ruzcmUwMiRAu9oPEHfqitSsWYDys0WVHDphtJM2PFuJ/T5y9+SkzjaBU3hNo8iJpAu1+Jy9oXXmf2MqRnphU+/EcEt7MPBFY/HrottpfFcpPumrlWqob/UxIGiMvxlcR23U8s0mkASM6nIhF2Qer9F2rtJgSaBE4AxusqXmNybYtL3fbb3UUCvIuZXtnyXmn+aRtFAkcp/r65qHMQcZFKYOQdjy+G5kCU0/udk670UqAUbNpCLuC/bJeSVtS7fhQVsg09PdMvUeoSd5V6XODkI1scBVbisTbtWoHEQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=openfive.com; dmarc=pass action=none header.from=sifive.com; dkim=pass header.d=sifive.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=i4858OVKAfB5O5BpfF9vkt5kdll7bxiyoqbWvZC05gU=; b=pXBlwthJAO5uPi79CW7K3d4MhozXPZm3UGsKT0JvjbLywMXj6bldQE8pxOuXB/trMggZ6ERJ5RGLffE4jxXq1lnUerHtI9XSXR9qnQX0oEz2OpxBDskfAhfEhkF1+1SQkOxI5gaWLM8SVxLAk84XFoaZWBqSqWefa11yXXRgUl0= Authentication-Results: lists.denx.de; dkim=none (message not signed) header.d=none;lists.denx.de; dmarc=none action=none header.from=sifive.com; Received: from MN2PR13MB2797.namprd13.prod.outlook.com (2603:10b6:208:f2::30) by MN2PR13MB2767.namprd13.prod.outlook.com (2603:10b6:208:f0::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3564.13; Sat, 14 Nov 2020 09:13:03 +0000 Received: from MN2PR13MB2797.namprd13.prod.outlook.com ([fe80::dcec:40d7:3fd6:308d]) by MN2PR13MB2797.namprd13.prod.outlook.com ([fe80::dcec:40d7:3fd6:308d%7]) with mapi id 15.20.3564.025; Sat, 14 Nov 2020 09:13:03 +0000 From: Pragnesh Patel To: u-boot@lists.denx.de Cc: atish.patra@wdc.com, palmerdabbelt@google.com, bmeng.cn@gmail.com, paul.walmsley@sifive.com, anup.patel@wdc.com, sagar.kadam@sifive.com, rick@andestech.com, Pragnesh Patel , Heiko Schocher Subject: [PATCH v3 1/2] i2c: ocores: add i2c driver for OpenCores I2C controller Date: Sat, 14 Nov 2020 14:42:34 +0530 Message-Id: <20201114091235.11933-2-pragnesh.patel@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201114091235.11933-1-pragnesh.patel@sifive.com> References: <20201114091235.11933-1-pragnesh.patel@sifive.com> X-Originating-IP: [114.143.65.226] X-ClientProxiedBy: LO2P265CA0391.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:f::19) To MN2PR13MB2797.namprd13.prod.outlook.com (2603:10b6:208:f2::30) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from sachinj2-OptiPlex-7010.open-silicon.com (114.143.65.226) by LO2P265CA0391.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:f::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3564.25 via Frontend Transport; Sat, 14 Nov 2020 09:12:59 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: d4553a63-1d21-4f73-c398-08d8887d7d10 X-MS-TrafficTypeDiagnostic: MN2PR13MB2767: X-LD-Processed: 22f88e9d-ae0d-4ed9-b984-cdc9be1529f1,ExtAddr X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8882; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: CoHzyKTpNzL1l7WXXByWNHvVWK/tsJFdSJo5o/H2W5/HSKuYG/I9WZ+V5qKkfDkdaHJ0Pd2oXOjrpgXbHzi+0OVWV3h2/cf/OeYm8bbmjBLOcYslY8GtaTspeey23wC4CowlSba1h3whC8bMc8L0ECeZPYEFO2iOEd+KbcvcWVuQju4OXmIYdTo0ytSO8CtOFo8wTKcZ5ZPg0wRAOl8JwrqTWRZz/3JRFVFuSZsYzL2Sz8OaG/Gj5oupL1lyTY265QvnB6FKCU0KPe0VHE4QEgZy3ujcNRac1VcNsRYilv5+EwXCbOy3fad/oP6pjPyJ05CTd3Ad6ql675hS4ZncqPlj83i7Z3mqH0RPDbABBSMMdvGgMH/jvGol7tSqDcK36RpY76l8QsAHGJj+EAEacQ== X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:MN2PR13MB2797.namprd13.prod.outlook.com; PTR:; CAT:NONE; SFS:(396003)(366004)(39840400004)(346002)(136003)(376002)(54906003)(4326008)(6666004)(66476007)(5660300002)(8676002)(1076003)(66556008)(316002)(83170400001)(2906002)(966005)(30864003)(44832011)(6512007)(478600001)(26005)(83380400001)(8936002)(36756003)(956004)(16526019)(1006002)(2616005)(186003)(42882007)(66946007)(6506007)(6916009)(6486002)(52116002); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: sifive.com X-MS-Exchange-CrossTenant-Network-Message-Id: d4553a63-1d21-4f73-c398-08d8887d7d10 X-MS-Exchange-CrossTenant-AuthSource: MN2PR13MB2797.namprd13.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Nov 2020 09:13:03.2620 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 22f88e9d-ae0d-4ed9-b984-cdc9be1529f1 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 6ephf/zkxsEe48MXwd5R3hq9V3Nl45lEmEGWioPF+b2dwLUDpCAAqjmqAutHLL7rckVyGC+0NKMvasD/wlMEIftWpLJl0uZrftpjP8gHZQs= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR13MB2767 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.3 at phobos.denx.de X-Virus-Status: Clean Add support for the OpenCores I2C controller IP core (See http://www.opencores.org/projects.cgi/web/i2c/overview). This driver implementation is inspired from the Linux OpenCores I2C driver available. Thanks to Peter Korsgaard for writing Linux OpenCores I2C driver. Signed-off-by: Pragnesh Patel Reviewed-by: Rick Chen --- Changes in v3: - Rebase to master and add missing #include Changes in v2: - Remove TYPE_SIFIVE_REV0 flag - Update the Opencores I2C Controller Link drivers/i2c/Kconfig | 7 + drivers/i2c/Makefile | 1 + drivers/i2c/ocores_i2c.c | 637 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 645 insertions(+) create mode 100644 drivers/i2c/ocores_i2c.c diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index 8ae54e1e93..37958083af 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -342,6 +342,13 @@ config SYS_I2C_NEXELL have several I2C ports and all are provided, controlled by the device tree. +config SYS_I2C_OCORES + bool "ocores I2C driver" + depends on DM_I2C + help + Add support for ocores I2C controller. For details see + https://opencores.org/projects/i2c + config SYS_I2C_OMAP24XX bool "TI OMAP2+ I2C driver" depends on ARCH_OMAP2PLUS || ARCH_K3 diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile index b37198036c..1aac5c481e 100644 --- a/drivers/i2c/Makefile +++ b/drivers/i2c/Makefile @@ -32,6 +32,7 @@ obj-$(CONFIG_SYS_I2C_MESON) += meson_i2c.o obj-$(CONFIG_SYS_I2C_MVTWSI) += mvtwsi.o obj-$(CONFIG_SYS_I2C_MXC) += mxc_i2c.o obj-$(CONFIG_SYS_I2C_NEXELL) += nx_i2c.o +obj-$(CONFIG_SYS_I2C_OCORES) += ocores_i2c.o obj-$(CONFIG_SYS_I2C_OCTEON) += octeon_i2c.o obj-$(CONFIG_SYS_I2C_OMAP24XX) += omap24xx_i2c.o obj-$(CONFIG_SYS_I2C_RCAR_I2C) += rcar_i2c.o diff --git a/drivers/i2c/ocores_i2c.c b/drivers/i2c/ocores_i2c.c new file mode 100644 index 0000000000..c4f2cc43f9 --- /dev/null +++ b/drivers/i2c/ocores_i2c.c @@ -0,0 +1,637 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * ocores-i2c.c: I2C bus driver for OpenCores I2C controller + * (https://opencores.org/projects/i2c) + * + * (C) Copyright Peter Korsgaard + * + * Copyright (C) 2020 SiFive, Inc. + * Pragnesh Patel + * + * Support for the GRLIB port of the controller by + * Andreas Larsson + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* registers */ +#define OCI2C_PRELOW 0 +#define OCI2C_PREHIGH 1 +#define OCI2C_CONTROL 2 +#define OCI2C_DATA 3 +#define OCI2C_CMD 4 /* write only */ +#define OCI2C_STATUS 4 /* read only, same address as OCI2C_CMD */ + +#define OCI2C_CTRL_IEN 0x40 +#define OCI2C_CTRL_EN 0x80 + +#define OCI2C_CMD_START 0x91 +#define OCI2C_CMD_STOP 0x41 +#define OCI2C_CMD_READ 0x21 +#define OCI2C_CMD_WRITE 0x11 +#define OCI2C_CMD_READ_ACK 0x21 +#define OCI2C_CMD_READ_NACK 0x29 +#define OCI2C_CMD_IACK 0x01 + +#define OCI2C_STAT_IF 0x01 +#define OCI2C_STAT_TIP 0x02 +#define OCI2C_STAT_ARBLOST 0x20 +#define OCI2C_STAT_BUSY 0x40 +#define OCI2C_STAT_NACK 0x80 + +#define STATE_DONE 0 +#define STATE_START 1 +#define STATE_WRITE 2 +#define STATE_READ 3 +#define STATE_ERROR 4 + +#define TYPE_OCORES 0 +#define TYPE_GRLIB 1 + +#define OCORES_FLAG_BROKEN_IRQ BIT(1) /* Broken IRQ for FU540-C000 SoC */ + +struct ocores_i2c_bus { + void __iomem *base; + u32 reg_shift; + u32 reg_io_width; + unsigned long flags; + struct i2c_msg *msg; + int pos; + int nmsgs; + int state; /* see STATE_ */ + struct clk clk; + int ip_clk_khz; + int bus_clk_khz; + void (*setreg)(struct ocores_i2c_bus *i2c, int reg, u8 value); + u8 (*getreg)(struct ocores_i2c_bus *i2c, int reg); +}; + +DECLARE_GLOBAL_DATA_PTR; + +/* Boolean attribute values */ +enum { + FALSE = 0, + TRUE, +}; + +static void oc_setreg_8(struct ocores_i2c_bus *i2c, int reg, u8 value) +{ + writeb(value, i2c->base + (reg << i2c->reg_shift)); +} + +static void oc_setreg_16(struct ocores_i2c_bus *i2c, int reg, u8 value) +{ + writew(value, i2c->base + (reg << i2c->reg_shift)); +} + +static void oc_setreg_32(struct ocores_i2c_bus *i2c, int reg, u8 value) +{ + writel(value, i2c->base + (reg << i2c->reg_shift)); +} + +static void oc_setreg_16be(struct ocores_i2c_bus *i2c, int reg, u8 value) +{ + out_be16(i2c->base + (reg << i2c->reg_shift), value); +} + +static void oc_setreg_32be(struct ocores_i2c_bus *i2c, int reg, u8 value) +{ + out_be32(i2c->base + (reg << i2c->reg_shift), value); +} + +static inline u8 oc_getreg_8(struct ocores_i2c_bus *i2c, int reg) +{ + return readb(i2c->base + (reg << i2c->reg_shift)); +} + +static inline u8 oc_getreg_16(struct ocores_i2c_bus *i2c, int reg) +{ + return readw(i2c->base + (reg << i2c->reg_shift)); +} + +static inline u8 oc_getreg_32(struct ocores_i2c_bus *i2c, int reg) +{ + return readl(i2c->base + (reg << i2c->reg_shift)); +} + +static inline u8 oc_getreg_16be(struct ocores_i2c_bus *i2c, int reg) +{ + return in_be16(i2c->base + (reg << i2c->reg_shift)); +} + +static inline u8 oc_getreg_32be(struct ocores_i2c_bus *i2c, int reg) +{ + return in_be32(i2c->base + (reg << i2c->reg_shift)); +} + +static inline void oc_setreg(struct ocores_i2c_bus *i2c, int reg, u8 value) +{ + i2c->setreg(i2c, reg, value); +} + +static inline u8 oc_getreg(struct ocores_i2c_bus *i2c, int reg) +{ + return i2c->getreg(i2c, reg); +} + +static inline u8 i2c_8bit_addr_from_msg(const struct i2c_msg *msg) +{ + return (msg->addr << 1) | (msg->flags & I2C_M_RD ? 1 : 0); +} + +static void ocores_process(struct ocores_i2c_bus *i2c, u8 stat) +{ + struct i2c_msg *msg = i2c->msg; + + if (i2c->state == STATE_DONE || i2c->state == STATE_ERROR) { + /* stop has been sent */ + oc_setreg(i2c, OCI2C_CMD, OCI2C_CMD_IACK); + return; + } + + /* error? */ + if (stat & OCI2C_STAT_ARBLOST) { + i2c->state = STATE_ERROR; + oc_setreg(i2c, OCI2C_CMD, OCI2C_CMD_STOP); + return; + } + + if (i2c->state == STATE_START || i2c->state == STATE_WRITE) { + i2c->state = + (msg->flags & I2C_M_RD) ? STATE_READ : STATE_WRITE; + + if (stat & OCI2C_STAT_NACK) { + i2c->state = STATE_ERROR; + oc_setreg(i2c, OCI2C_CMD, OCI2C_CMD_STOP); + return; + } + } else { + msg->buf[i2c->pos++] = oc_getreg(i2c, OCI2C_DATA); + } + + /* end of msg? */ + if (i2c->pos == msg->len) { + i2c->nmsgs--; + i2c->msg++; + i2c->pos = 0; + msg = i2c->msg; + + if (i2c->nmsgs) { /* end? */ + /* send start? */ + if (!(msg->flags & I2C_M_NOSTART)) { + u8 addr = i2c_8bit_addr_from_msg(msg); + + i2c->state = STATE_START; + + oc_setreg(i2c, OCI2C_DATA, addr); + oc_setreg(i2c, OCI2C_CMD, OCI2C_CMD_START); + return; + } + i2c->state = (msg->flags & I2C_M_RD) + ? STATE_READ : STATE_WRITE; + } else { + i2c->state = STATE_DONE; + oc_setreg(i2c, OCI2C_CMD, OCI2C_CMD_STOP); + return; + } + } + + if (i2c->state == STATE_READ) { + oc_setreg(i2c, OCI2C_CMD, i2c->pos == (msg->len - 1) ? + OCI2C_CMD_READ_NACK : OCI2C_CMD_READ_ACK); + } else { + oc_setreg(i2c, OCI2C_DATA, msg->buf[i2c->pos++]); + oc_setreg(i2c, OCI2C_CMD, OCI2C_CMD_WRITE); + } +} + +static irqreturn_t ocores_isr(int irq, void *dev_id) +{ + struct ocores_i2c_bus *i2c = dev_id; + u8 stat = oc_getreg(i2c, OCI2C_STATUS); + + if (i2c->flags & OCORES_FLAG_BROKEN_IRQ) { + if ((stat & OCI2C_STAT_IF) && !(stat & OCI2C_STAT_BUSY)) + return IRQ_NONE; + } else if (!(stat & OCI2C_STAT_IF)) { + return IRQ_NONE; + } + ocores_process(i2c, stat); + + return IRQ_HANDLED; +} + +/** + * Wait until something change in a given register + * @i2c: ocores I2C device instance + * @reg: register to query + * @mask: bitmask to apply on register value + * @val: expected result + * @msec: timeout in msec + * + * Timeout is necessary to avoid to stay here forever when the chip + * does not answer correctly. + * + * Return: 0 on success, -ETIMEDOUT on timeout + */ +static int ocores_wait(struct ocores_i2c_bus *i2c, + int reg, u8 mask, u8 val, + const unsigned long msec) +{ + u32 count = 0; + + while (1) { + u8 status = oc_getreg(i2c, reg); + + if ((status & mask) == val) + break; + + udelay(1); + count += 1; + + if (count == (1000 * msec)) + return -ETIMEDOUT; + } + return 0; +} + +/** + * Wait until is possible to process some data + * @i2c: ocores I2C device instance + * + * Used when the device is in polling mode (interrupts disabled). + * + * Return: 0 on success, -ETIMEDOUT on timeout + */ +static int ocores_poll_wait(struct ocores_i2c_bus *i2c) +{ + u8 mask; + int err; + + if (i2c->state == STATE_DONE || i2c->state == STATE_ERROR) { + /* transfer is over */ + mask = OCI2C_STAT_BUSY; + } else { + /* on going transfer */ + mask = OCI2C_STAT_TIP; + /* + * We wait for the data to be transferred (8bit), + * then we start polling on the ACK/NACK bit + */ + udelay((8 * 1000) / i2c->bus_clk_khz); + } + + /* + * once we are here we expect to get the expected result immediately + * so if after 1ms we timeout then something is broken. + */ + err = ocores_wait(i2c, OCI2C_STATUS, mask, 0, 1); + if (err) + debug("%s: STATUS timeout, bit 0x%x did not clear in 1ms\n", + __func__, mask); + return err; +} + +/** + * It handles an IRQ-less transfer + * @i2c: ocores I2C device instance + * + * Even if IRQ are disabled, the I2C OpenCore IP behavior is exactly the same + * (only that IRQ are not produced). This means that we can re-use entirely + * ocores_isr(), we just add our polling code around it. + * + * It can run in atomic context + */ +static void ocores_process_polling(struct ocores_i2c_bus *i2c) +{ + while (1) { + irqreturn_t ret; + int err; + + err = ocores_poll_wait(i2c); + if (err) { + i2c->state = STATE_ERROR; + break; /* timeout */ + } + + ret = ocores_isr(-1, i2c); + if (ret == IRQ_NONE) { + break; /* all messages have been transferred */ + } else { + if (i2c->flags & OCORES_FLAG_BROKEN_IRQ) + if (i2c->state == STATE_DONE) + break; + } + } +} + +static int ocores_xfer_core(struct ocores_i2c_bus *i2c, + struct i2c_msg *msgs, int num, bool polling) +{ + u8 ctrl; + + ctrl = oc_getreg(i2c, OCI2C_CONTROL); + + if (polling) + oc_setreg(i2c, OCI2C_CONTROL, ctrl & ~OCI2C_CTRL_IEN); + + i2c->msg = msgs; + i2c->pos = 0; + i2c->nmsgs = num; + i2c->state = STATE_START; + + oc_setreg(i2c, OCI2C_DATA, i2c_8bit_addr_from_msg(i2c->msg)); + oc_setreg(i2c, OCI2C_CMD, OCI2C_CMD_START); + + if (polling) + ocores_process_polling(i2c); + + return (i2c->state == STATE_DONE) ? num : -EIO; +} + +static int ocores_i2c_xfer(struct udevice *dev, struct i2c_msg *msg, int nmsgs) +{ + struct ocores_i2c_bus *bus = dev_get_priv(dev); + int ret; + + debug("i2c_xfer: %d messages\n", nmsgs); + + ret = ocores_xfer_core(bus, msg, nmsgs, 1); + + if (ret != nmsgs) { + debug("i2c_write: error sending\n"); + return -EREMOTEIO; + } + + return 0; +} + +static int ocores_i2c_enable_clk(struct udevice *dev) +{ + struct ocores_i2c_bus *bus = dev_get_priv(dev); + ulong clk_rate; + int ret; + + ret = clk_get_by_index(dev, 0, &bus->clk); + if (ret) + return -EINVAL; + + ret = clk_enable(&bus->clk); + if (ret) + return ret; + + clk_rate = clk_get_rate(&bus->clk); + if (!clk_rate) + return -EINVAL; + + bus->ip_clk_khz = clk_rate / 1000; + + clk_free(&bus->clk); + + return 0; +} + +static int ocores_init(struct udevice *dev, struct ocores_i2c_bus *bus) +{ + int prescale; + int diff; + u8 ctrl = oc_getreg(bus, OCI2C_CONTROL); + + /* make sure the device is disabled */ + ctrl &= ~(OCI2C_CTRL_EN | OCI2C_CTRL_IEN); + oc_setreg(bus, OCI2C_CONTROL, ctrl); + + prescale = (bus->ip_clk_khz / (5 * bus->bus_clk_khz)) - 1; + prescale = clamp(prescale, 0, 0xffff); + + diff = bus->ip_clk_khz / (5 * (prescale + 1)) - bus->bus_clk_khz; + if (abs(diff) > bus->bus_clk_khz / 10) { + debug("Unsupported clock settings: core: %d KHz, bus: %d KHz\n", + bus->ip_clk_khz, bus->bus_clk_khz); + return -EINVAL; + } + + oc_setreg(bus, OCI2C_PRELOW, prescale & 0xff); + oc_setreg(bus, OCI2C_PREHIGH, prescale >> 8); + + /* Init the device */ + oc_setreg(bus, OCI2C_CMD, OCI2C_CMD_IACK); + oc_setreg(bus, OCI2C_CONTROL, ctrl | OCI2C_CTRL_EN); + + return 0; +} + +/* + * Read and write functions for the GRLIB port of the controller. Registers are + * 32-bit big endian and the PRELOW and PREHIGH registers are merged into one + * register. The subsequent registers have their offsets decreased accordingly. + */ +static u8 oc_getreg_grlib(struct ocores_i2c_bus *i2c, int reg) +{ + u32 rd; + int rreg = reg; + + if (reg != OCI2C_PRELOW) + rreg--; + rd = in_be32(i2c->base + (rreg << i2c->reg_shift)); + if (reg == OCI2C_PREHIGH) + return (u8)(rd >> 8); + else + return (u8)rd; +} + +static void oc_setreg_grlib(struct ocores_i2c_bus *i2c, int reg, u8 value) +{ + u32 curr, wr; + int rreg = reg; + + if (reg != OCI2C_PRELOW) + rreg--; + if (reg == OCI2C_PRELOW || reg == OCI2C_PREHIGH) { + curr = in_be32(i2c->base + (rreg << i2c->reg_shift)); + if (reg == OCI2C_PRELOW) + wr = (curr & 0xff00) | value; + else + wr = (((u32)value) << 8) | (curr & 0xff); + } else { + wr = value; + } + out_be32(i2c->base + (rreg << i2c->reg_shift), wr); +} + +static int ocores_i2c_set_bus_speed(struct udevice *dev, unsigned int speed) +{ + int prescale; + int diff; + struct ocores_i2c_bus *bus = dev_get_priv(dev); + + /* speed in Khz */ + speed = speed / 1000; + + prescale = (bus->ip_clk_khz / (5 * speed)) - 1; + prescale = clamp(prescale, 0, 0xffff); + + diff = bus->ip_clk_khz / (5 * (prescale + 1)) - speed; + if (abs(diff) > speed / 10) { + debug("Unsupported clock settings: core: %d KHz, bus: %d KHz\n", + bus->ip_clk_khz, speed); + return -EINVAL; + } + + oc_setreg(bus, OCI2C_PRELOW, prescale & 0xff); + oc_setreg(bus, OCI2C_PREHIGH, prescale >> 8); + + bus->bus_clk_khz = speed; + return 0; +} + +int ocores_i2c_get_bus_speed(struct udevice *dev) +{ + struct ocores_i2c_bus *bus = dev_get_priv(dev); + + return (bus->bus_clk_khz * 1000); +} + +static const struct dm_i2c_ops ocores_i2c_ops = { + .xfer = ocores_i2c_xfer, + .set_bus_speed = ocores_i2c_set_bus_speed, + .get_bus_speed = ocores_i2c_get_bus_speed, +}; + +static int ocores_i2c_probe(struct udevice *dev) +{ + struct ocores_i2c_bus *bus = dev_get_priv(dev); + bool clock_frequency_present; + u32 val; + u32 clock_frequency_khz; + int ret; + + bus->base = (void __iomem *)devfdt_get_addr(dev); + + if (dev_read_u32(dev, "reg-shift", &bus->reg_shift)) { + /* no 'reg-shift', check for deprecated 'regstep' */ + ret = dev_read_u32(dev, "regstep", &val); + if (ret) { + dev_err(dev, + "missing both reg-shift and regstep property: %d\n", ret); + return -EINVAL; + } else { + bus->reg_shift = ilog2(val); + dev_warn(dev, + "regstep property deprecated, use reg-shift\n"); + } + } + + if (dev_read_u32(dev, "clock-frequency", &val)) { + bus->bus_clk_khz = 100; + clock_frequency_present = FALSE; + } else { + bus->bus_clk_khz = val / 1000; + clock_frequency_khz = val / 1000; + clock_frequency_present = TRUE; + } + + ret = ocores_i2c_enable_clk(dev); + if (ret) + return ret; + + if (bus->ip_clk_khz == 0) { + if (dev_read_u32(dev, "opencores,ip-clock-frequency", &val)) { + if (!clock_frequency_present) { + dev_err(dev, + "Missing required parameter 'opencores,ip-clock-frequency'\n"); + clk_disable(&bus->clk); + return -ENODEV; + } + + bus->ip_clk_khz = clock_frequency_khz; + dev_warn(dev, + "Deprecated usage of the 'clock-frequency' property, please update to 'opencores,ip-clock-frequency'\n"); + } else { + bus->ip_clk_khz = val / 1000; + if (clock_frequency_present) + bus->bus_clk_khz = clock_frequency_khz; + } + } + + bus->reg_io_width = dev_read_u32_default(dev, "reg-io-width", 1); + + if (dev_get_driver_data(dev) == TYPE_GRLIB) { + debug("GRLIB variant of i2c-ocores\n"); + bus->setreg = oc_setreg_grlib; + bus->getreg = oc_getreg_grlib; + } + + if (!bus->setreg || !bus->getreg) { + bool be = (cpu_to_be32(0x12345678) == 0x12345678); + + switch (bus->reg_io_width) { + case 1: + bus->setreg = oc_setreg_8; + bus->getreg = oc_getreg_8; + break; + + case 2: + bus->setreg = be ? oc_setreg_16be : oc_setreg_16; + bus->getreg = be ? oc_getreg_16be : oc_getreg_16; + break; + + case 4: + bus->setreg = be ? oc_setreg_32be : oc_setreg_32; + bus->getreg = be ? oc_getreg_32be : oc_getreg_32; + break; + + default: + debug("Unsupported I/O width (%d)\n", + bus->reg_io_width); + ret = -EINVAL; + goto err_clk; + } + } + + /* + * Set OCORES_FLAG_BROKEN_IRQ to enable workaround for + * FU540-C000 SoC in polling mode. + * Since the SoC does have an interrupt, its DT has an interrupt + * property - But this should be bypassed as the IRQ logic in this + * SoC is broken. + */ + + if (device_is_compatible(dev, "sifive,fu540-c000-i2c")) + bus->flags |= OCORES_FLAG_BROKEN_IRQ; + + ret = ocores_init(dev, bus); + if (ret) + goto err_clk; + + return 0; + +err_clk: + clk_disable(&bus->clk); + return ret; +} + +static const struct udevice_id ocores_i2c_ids[] = { +{ .compatible = "opencores,i2c-ocores", .data = TYPE_OCORES }, +{ .compatible = "aeroflexgaisler,i2cmst", .data = TYPE_GRLIB }, +{ .compatible = "sifive,fu540-c000-i2c" }, +{ .compatible = "sifive,i2c0" }, +}; + +U_BOOT_DRIVER(i2c_ocores) = { + .name = "i2c_ocores", + .id = UCLASS_I2C, + .of_match = ocores_i2c_ids, + .probe = ocores_i2c_probe, + .priv_auto_alloc_size = sizeof(struct ocores_i2c_bus), + .ops = &ocores_i2c_ops, +}; From patchwork Sat Nov 14 09:12:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pragnesh Patel X-Patchwork-Id: 1400245 X-Patchwork-Delegate: hs@denx.de Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=sifive.com header.i=@sifive.com header.a=rsa-sha256 header.s=selector1 header.b=pZTUPSWc; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4CY8nr3h74z9sTc for ; Sat, 14 Nov 2020 20:15:44 +1100 (AEDT) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 7EE2A8255C; Sat, 14 Nov 2020 10:14:23 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (1024-bit key; unprotected) header.d=sifive.com header.i=@sifive.com header.b="pZTUPSWc"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 3812582535; Sat, 14 Nov 2020 10:13:32 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FORGED_SPF_HELO,MSGID_FROM_MTA_HEADER, SPF_HELO_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.2 Received: from NAM11-BN8-obe.outbound.protection.outlook.com (mail-bn8nam11on20628.outbound.protection.outlook.com [IPv6:2a01:111:f400:7eae::628]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 393D5823CC for ; Sat, 14 Nov 2020 10:13:19 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=pragnesh.patel@openfive.com ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=bN/vY0KCIir0dLikjn7i38bLqQn1W77C3DDsL0eFW/EoUOxFW8TEGuwqVoSpBN1Mr3w1ILsadXOB5hUi5rCiYAWzXMzjgz4WZ16RlZqAW5pBvTMTYSZXj799mmB8Kr6ncNIvOa1y6Z/RhE01rrfFIXj/UpMs6xYqO6uVg4JqPy3TeWLCEbT80dbEtsbh+zs6YEo0Xr4YrTo3li88UmlozbRSob433WkpksulUMR28ke9RCqBq2Zv/shg7Rg2LNY8IzbMlRpgrGOMK9gZyLKx069GD7r6+HfRg83t33sec0b1dKVPkIa8rTPKJaV23lM9gvsdOvXTuYU7nhS3nU3GOQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=jGMH2bh3n4cvfqLCHZN6/+pDA+XcWA+mv4sln1ymzo8=; b=P/AVsof9GiuKSSRXRT9qiofp5tItSAQl3qr+ylqxDEDXnG5dqzOs0GSFKFobmlRuMqrEYMTqyr0LRhTdbvFdrrkh/2rS9s2WpD6IYO52Y7lmFTJt+Dj3tApP9XQaWBkAh3QnoAnuPiLz0dSfrlXB9np8iHgvYoVEaU6SeIwYYbvaDUsUN7Vem+WKHP7NX9ZFSgr8YO2VYhYNcskU85ve/SVW1XwCMtz3D3vryeE41cy7cIoavOzDGvRntZdaaZ1fQdAAXO4aM1FT0kZ44y/DS4D/DeqIQuI0ho4Rm2Azrl/ADQss2N0cBd3uoiI8kiH9U1nhTf5jR0OaYZCoW5ZYaA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=openfive.com; dmarc=pass action=none header.from=sifive.com; dkim=pass header.d=sifive.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=jGMH2bh3n4cvfqLCHZN6/+pDA+XcWA+mv4sln1ymzo8=; b=pZTUPSWciIi1owWebdZGajSxYQdb7of3m1xIPyLWQJEn+PoMx2AvQxe+m/ELKGJBQHIUsPleIS2Yt/Sw7RtsJxN20GnEbp2gFCZSNsnS88t+q3ZzD8crMLTgaTzRhMA2dDkM1YO01ia+cpsTtOE2aILl82dGcipvUinOj3ACDqg= Authentication-Results: lists.denx.de; dkim=none (message not signed) header.d=none;lists.denx.de; dmarc=none action=none header.from=sifive.com; Received: from MN2PR13MB2797.namprd13.prod.outlook.com (2603:10b6:208:f2::30) by MN2PR13MB2767.namprd13.prod.outlook.com (2603:10b6:208:f0::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3564.13; Sat, 14 Nov 2020 09:13:14 +0000 Received: from MN2PR13MB2797.namprd13.prod.outlook.com ([fe80::dcec:40d7:3fd6:308d]) by MN2PR13MB2797.namprd13.prod.outlook.com ([fe80::dcec:40d7:3fd6:308d%7]) with mapi id 15.20.3564.025; Sat, 14 Nov 2020 09:13:14 +0000 From: Pragnesh Patel To: u-boot@lists.denx.de Cc: atish.patra@wdc.com, palmerdabbelt@google.com, bmeng.cn@gmail.com, paul.walmsley@sifive.com, anup.patel@wdc.com, sagar.kadam@sifive.com, rick@andestech.com, Pragnesh Patel , Palmer Dabbelt , Bin Meng , Jagan Teki , Sean Anderson Subject: [PATCH v3 2/2] riscv: sifive/fu540: kconfig: Enable support for Opencores I2C controller Date: Sat, 14 Nov 2020 14:42:35 +0530 Message-Id: <20201114091235.11933-3-pragnesh.patel@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201114091235.11933-1-pragnesh.patel@sifive.com> References: <20201114091235.11933-1-pragnesh.patel@sifive.com> X-Originating-IP: [114.143.65.226] X-ClientProxiedBy: LO2P265CA0391.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:f::19) To MN2PR13MB2797.namprd13.prod.outlook.com (2603:10b6:208:f2::30) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from sachinj2-OptiPlex-7010.open-silicon.com (114.143.65.226) by LO2P265CA0391.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:f::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3564.25 via Frontend Transport; Sat, 14 Nov 2020 09:13:10 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: f9aad52c-88d4-466a-50dd-08d8887d83c7 X-MS-TrafficTypeDiagnostic: MN2PR13MB2767: X-LD-Processed: 22f88e9d-ae0d-4ed9-b984-cdc9be1529f1,ExtAddr X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:334; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: zj+T24Fu5ctypl6L7/3lvXpa0XycJa9AlCMujWhQmgdld/ne2CL8Uu0F8Judt7okGS2cFY/9FQB+SkHcyHtfzklvWPBZFjTytN8cCkQXaFAB9MDgr2Jk+S/zRoiFDh3eiPwhT0iQnhoZzlkNz3q8h0jQuf3CtdmF/DS1mWSTHrPX5tkfV7kZeNUGTRtQIW7p1k9H+cjlp0rVNL/D/1tbVGmbiYuxs9Kw+WqYdpImIsb1/0+GbnvjlDtGB940gBc/WxY3I+kZJW+oqvRzZLaoBpF73F5jsplwAjLTlzHsIIxU3Doil++rXfb0xsQ+WNAx X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:MN2PR13MB2797.namprd13.prod.outlook.com; PTR:; CAT:NONE; SFS:(396003)(366004)(39840400004)(346002)(136003)(376002)(54906003)(4326008)(6666004)(66476007)(5660300002)(8676002)(1076003)(66556008)(7416002)(316002)(83170400001)(2906002)(44832011)(6512007)(478600001)(26005)(4744005)(8936002)(36756003)(956004)(16526019)(1006002)(2616005)(186003)(42882007)(66946007)(6506007)(6916009)(6486002)(52116002); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: sifive.com X-MS-Exchange-CrossTenant-Network-Message-Id: f9aad52c-88d4-466a-50dd-08d8887d83c7 X-MS-Exchange-CrossTenant-AuthSource: MN2PR13MB2797.namprd13.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Nov 2020 09:13:14.1279 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 22f88e9d-ae0d-4ed9-b984-cdc9be1529f1 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: ndS0/zbjTviSsaTw1e6HIRjpmhq2Um+ILmdvmi92tHw7swwCcPiF5zVX5MqM7cmqeXo9ojwZYsHPlgdStgxneUsOU2NAaWg9GokumqW6ZV8= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR13MB2767 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.3 at phobos.denx.de X-Virus-Status: Clean Enable support for SiFive FU540 Opencores I2C master controller. Signed-off-by: Pragnesh Patel Reviewed-by: Rick Chen --- (no changes since v1) arch/riscv/cpu/fu540/Kconfig | 2 ++ board/sifive/fu540/Kconfig | 1 + 2 files changed, 3 insertions(+) diff --git a/arch/riscv/cpu/fu540/Kconfig b/arch/riscv/cpu/fu540/Kconfig index ac3f183342..61bd5c426e 100644 --- a/arch/riscv/cpu/fu540/Kconfig +++ b/arch/riscv/cpu/fu540/Kconfig @@ -35,6 +35,8 @@ config SIFIVE_FU540 imply SIFIVE_OTP imply DM_PWM imply PWM_SIFIVE + imply DM_I2C + imply SYS_I2C_OCORES if ENV_IS_IN_SPI_FLASH diff --git a/board/sifive/fu540/Kconfig b/board/sifive/fu540/Kconfig index e70d1e53f9..64fdbd44b4 100644 --- a/board/sifive/fu540/Kconfig +++ b/board/sifive/fu540/Kconfig @@ -47,5 +47,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy imply SPI_FLASH_ISSI imply SYSRESET imply SYSRESET_GPIO + imply CMD_I2C endif