From mboxrd@z Thu Jan 1 00:00:00 1970 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 D5245CD37B7 for ; Sat, 9 May 2026 19:21:58 +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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: 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: List-Owner; bh=hvcdL8clL9nwb4nFrPN2QFRoOPkDV0H7y8XupZLZigo=; b=lIOdagQHuPoAfu i9Wim9PfK7V3aI0uhQVDGdL0z78vXrhx54DN17yYJRmZDd3vSts8z8DfZQdbQiNKAA4GOF4wpZ53B faGw8IpFC3I77+XcqOyKt6OEkDkSj3/YWF3sXEE+lRz9h/+m1bSmMXLGUbSMEmIwjo8YxGU28f2t0 UQZibhGy+XwhuV+tdkwp60XN9LM6DShphKW3IAg3nkb7V+Tc5W4Ms691rVsKe6BwQm6Np7fW6GTWw dHoHPVxeyDpMW+91xz6H+k2eg5kih8LtlEibNqeC2f7YXiUrlgzbcvFTrQEtzggk8tbATjWQ7jkgA 7O/9JliIeE0YcxuNUpCw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wLnFF-00000009W8k-3avH; Sat, 09 May 2026 19:21:49 +0000 Received: from mail-oi1-x230.google.com ([2607:f8b0:4864:20::230]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wLnFB-00000009W3W-3l3d for linux-rockchip@lists.infradead.org; Sat, 09 May 2026 19:21:47 +0000 Received: by mail-oi1-x230.google.com with SMTP id 5614622812f47-479aa2dbea2so1290556b6e.0 for ; Sat, 09 May 2026 12:21:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1778354501; x=1778959301; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=EtwX9EggxkY0a0eRkark7KTa+XYR7KH3DQgbMjQcqVI=; b=q1CF3i2ZdIilQvRQ2rS8njf/5AXmnGpH2pwODa6Zgi7uPlg3lIkj6vj6Erw4yGquQE vOfVjkEPsvHpeS0lq/ld0McTv8NkD29vZT9rytly6D7iQAznb8GfzSnZFCos+agx8JU0 8nYduBk3QUfnbJjpm1H5ezQkWV/1cYj/Q2L/ReCuN4byPfBuon1sGXWJpTXodaSKkGBN b+gYqU5z60k97FW8tSv5jWVv+DKsdpG9FMb/CFxMPfA78a3WYSGc93KRKISL+BfWH87A dYmtDa4lMZitwQHjMIrnh+p7WiYRMfENwNsKUZbMKU9Leci3kPtBKpdNMAkXdfCWkOvn x8aA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778354501; x=1778959301; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=EtwX9EggxkY0a0eRkark7KTa+XYR7KH3DQgbMjQcqVI=; b=R89YJyDB2dhaqKmmwq81zh0tTY4VmsVfw1PXBWLqXGXDGFDMf5v0vRZ9nERt76mBOb 4IR2f8J7hGJn/Twu5h9EBuGt6EktCe0HvjNYgdzTUZ7SKie+1mkKhOzNUXYcVGY+633s ZezDFzgU9EVvvOpXIRy385LPk2gRKJISUAjgmp3wAuo8tTcT4f2nRbS+07g7Qw3SWnb5 /gTJyUsZVFz7398SqHjX0wtRrgSyy1992SuP/Uz/UYVerXI4aZ0jDmdissH+BSxdAev1 bf43L2Z4BBFKXeGj4R/QEo/+GxKvb1hAfwXcnn9/IP7h+YBDdZ0Ztc6fKOALTjtsZslA FAQw== X-Forwarded-Encrypted: i=1; AFNElJ/KoLqDH75y8w8eXyrbZ34g4E2IY5o4IXzqxz+zV64VRw3haTeTjCpzu0NlT3AKUeUeBeooAx2JxLOL+x1WLA==@lists.infradead.org X-Gm-Message-State: AOJu0YwEyJ5uFB160RTyUOARtp8SQf/Pr61F4/Wzxq3SoOclFdSeqyMe 3leTUo0LWTkr8LxxWQN84qVnlEbE0XIPR93qWTRzXU7flDhho0Dqepub X-Gm-Gg: Acq92OFPLKM0yaAvPaGQrK/rUBNS3gLwnTV3qF5xTsDQ7UnE9WB6z8MwU+lhrythROh iW1J5qBO05eZ30KfUqpKf80GO19Gzhb8WHchdYqcV6f+oY3h/rT3HZiPj6+ecwbP+tlgyC3kOg7 W6J6CTUzqG4dESG629FfHpO0v1r630P0Fw3KqXrSbUrzxSOwdNSMxGCmrx9L0RAUVEJQqUINTEn SdL/WkvMCpQQ536SMKU00FJCj7pRLgjzEf83Sx2UpyyicOPPDvvY9Qz7Vv6bBKBl+7rK1LmKv3D wgDSnxhn9hO5FXtFv7Vj775v6GMVL7x3owbc8HBh1xS8B0IJcEoNG4E0kU8H3xW6rer/3j3Goam 1bdRvMw4svZYTR/dZ9TwlN+LCxEww6roSPqLCZsVP6dWAIjibKKnH4D1ghZdZYe9BcXl4OC9KC1 pNc6Yb6vOiy1EzPPGPh59M X-Received: by 2002:a05:6808:3998:b0:479:ef66:44cd with SMTP id 5614622812f47-480424a64fbmr11366087b6e.23.1778354501282; Sat, 09 May 2026 12:21:41 -0700 (PDT) Received: from localhost.localdomain ([2600:1700:fb0:1bc0::54]) by smtp.gmail.com with ESMTPSA id 586e51a60fabf-4355736f517sm5243896fac.12.2026.05.09.12.21.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 09 May 2026 12:21:40 -0700 (PDT) From: Chris Morgan To: linux-iio@vger.kernel.org Cc: andy@kernel.org, nuno.sa@analog.com, dlechner@baylibre.com, jic23@kernel.org, jean-baptiste.maneyrol@tdk.com, linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, heiko@sntech.de, conor+dt@kernel.org, krzk+dt@kernel.org, robh@kernel.org, andriy.shevchenko@intel.com, Chris Morgan Subject: [PATCH V5 04/11] iio: imu: inv_icm42607: Add I2C and SPI For icm42607 Date: Sat, 9 May 2026 14:18:58 -0500 Message-ID: <20260509191907.24734-5-macroalpha82@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260509191907.24734-1-macroalpha82@gmail.com> References: <20260509191907.24734-1-macroalpha82@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260509_122145_969716_57FAD6AF X-CRM114-Status: GOOD ( 21.73 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org From: Chris Morgan Add I2C and SPI driver support for InvenSense ICM-42607 devices. Add necessary Kconfig and Makefile to allow building of (incomplete) driver. Signed-off-by: Chris Morgan --- drivers/iio/imu/Kconfig | 1 + drivers/iio/imu/Makefile | 1 + drivers/iio/imu/inv_icm42607/Kconfig | 30 ++++++ drivers/iio/imu/inv_icm42607/Makefile | 10 ++ drivers/iio/imu/inv_icm42607/inv_icm42607.h | 12 +++ .../iio/imu/inv_icm42607/inv_icm42607_core.c | 51 +++++++++++ .../iio/imu/inv_icm42607/inv_icm42607_i2c.c | 84 +++++++++++++++++ .../iio/imu/inv_icm42607/inv_icm42607_spi.c | 91 +++++++++++++++++++ 8 files changed, 280 insertions(+) create mode 100644 drivers/iio/imu/inv_icm42607/Kconfig create mode 100644 drivers/iio/imu/inv_icm42607/Makefile create mode 100644 drivers/iio/imu/inv_icm42607/inv_icm42607_i2c.c create mode 100644 drivers/iio/imu/inv_icm42607/inv_icm42607_spi.c diff --git a/drivers/iio/imu/Kconfig b/drivers/iio/imu/Kconfig index 7e0181c27bb6..8bab4616be20 100644 --- a/drivers/iio/imu/Kconfig +++ b/drivers/iio/imu/Kconfig @@ -109,6 +109,7 @@ config KMX61 be called kmx61. source "drivers/iio/imu/inv_icm42600/Kconfig" +source "drivers/iio/imu/inv_icm42607/Kconfig" source "drivers/iio/imu/inv_icm45600/Kconfig" source "drivers/iio/imu/inv_mpu6050/Kconfig" diff --git a/drivers/iio/imu/Makefile b/drivers/iio/imu/Makefile index 13fb7846e9c9..3268dc2371ae 100644 --- a/drivers/iio/imu/Makefile +++ b/drivers/iio/imu/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_FXOS8700_I2C) += fxos8700_i2c.o obj-$(CONFIG_FXOS8700_SPI) += fxos8700_spi.o obj-y += inv_icm42600/ +obj-y += inv_icm42607/ obj-y += inv_icm45600/ obj-y += inv_mpu6050/ diff --git a/drivers/iio/imu/inv_icm42607/Kconfig b/drivers/iio/imu/inv_icm42607/Kconfig new file mode 100644 index 000000000000..7ba64e6e8d80 --- /dev/null +++ b/drivers/iio/imu/inv_icm42607/Kconfig @@ -0,0 +1,30 @@ +# SPDX-License-Identifier: GPL-2.0-or-later + +config INV_ICM42607 + tristate + select IIO_BUFFER + select IIO_INV_SENSORS_TIMESTAMP + +config INV_ICM42607_I2C + tristate "InvenSense ICM-42607X I2C driver" + depends on I2C + select INV_ICM42607 + select REGMAP_I2C + help + This driver supports the InvenSense ICM-42607 motion tracking + device over I2C. + + This driver can be built as a module. The module will be called + inv-icm42607-i2c. + +config INV_ICM42607_SPI + tristate "InvenSense ICM-42607X SPI driver" + depends on SPI_MASTER + select INV_ICM42607 + select REGMAP_SPI + help + This driver supports the InvenSense ICM-42607 motion tracking + device over SPI. + + This driver can be built as a module. The module will be called + inv-icm42607-spi. diff --git a/drivers/iio/imu/inv_icm42607/Makefile b/drivers/iio/imu/inv_icm42607/Makefile new file mode 100644 index 000000000000..be109102e203 --- /dev/null +++ b/drivers/iio/imu/inv_icm42607/Makefile @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0-or-later + +obj-$(CONFIG_INV_ICM42607) += inv-icm42607.o +inv-icm42607-y += inv_icm42607_core.o + +obj-$(CONFIG_INV_ICM42607_I2C) += inv-icm42607-i2c.o +inv-icm42607-i2c-y += inv_icm42607_i2c.o + +obj-$(CONFIG_INV_ICM42607_SPI) += inv-icm42607-spi.o +inv-icm42607-spi-y += inv_icm42607_spi.o diff --git a/drivers/iio/imu/inv_icm42607/inv_icm42607.h b/drivers/iio/imu/inv_icm42607/inv_icm42607.h index 10dcd3473e9c..3ebc06025051 100644 --- a/drivers/iio/imu/inv_icm42607/inv_icm42607.h +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607.h @@ -13,6 +13,16 @@ #include #include +/* serial bus slew rates */ +enum inv_icm42607_slew_rate { + INV_ICM42607_SLEW_RATE_20_60NS, + INV_ICM42607_SLEW_RATE_12_36NS, + INV_ICM42607_SLEW_RATE_6_18NS, + INV_ICM42607_SLEW_RATE_4_12NS, + INV_ICM42607_SLEW_RATE_2_6NS, + INV_ICM42607_SLEW_RATE_INF_2NS +}; + enum inv_icm42607_sensor_mode { INV_ICM42607_SENSOR_MODE_OFF, INV_ICM42607_SENSOR_MODE_STANDBY, @@ -325,6 +335,8 @@ struct inv_icm42607_state { typedef int (*inv_icm42607_bus_setup)(struct inv_icm42607_state *); extern const struct regmap_config inv_icm42607_regmap_config; +extern const struct inv_icm42607_hw inv_icm42607_hw_data; +extern const struct inv_icm42607_hw inv_icm42607p_hw_data; int inv_icm42607_core_probe(struct regmap *regmap, const struct inv_icm42607_hw *hw, inv_icm42607_bus_setup bus_setup); diff --git a/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c b/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c index e84e84416dab..8ff51711ab1f 100644 --- a/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c @@ -15,6 +15,57 @@ #include "inv_icm42607.h" +static const struct regmap_range_cfg inv_icm42607_regmap_ranges[] = { + { + .name = "user bank", + .range_min = 0x0000, + .range_max = 0x00FF, + .window_start = 0, + .window_len = 0x0100, + }, +}; + +const struct regmap_config inv_icm42607_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x00FF, + .ranges = inv_icm42607_regmap_ranges, + .num_ranges = ARRAY_SIZE(inv_icm42607_regmap_ranges), + .cache_type = REGCACHE_NONE, +}; +EXPORT_SYMBOL_NS_GPL(inv_icm42607_regmap_config, "IIO_ICM42607"); + +/* chip initial default configuration */ +static const struct inv_icm42607_conf inv_icm42607_default_conf = { + .gyro = { + .mode = INV_ICM42607_SENSOR_MODE_OFF, + .fs = INV_ICM42607_GYRO_FS_1000DPS, + .odr = INV_ICM42607_ODR_100HZ, + .filter = INV_ICM42607_FILTER_BW_25HZ, + }, + .accel = { + .mode = INV_ICM42607_SENSOR_MODE_OFF, + .fs = INV_ICM42607_ACCEL_FS_4G, + .odr = INV_ICM42607_ODR_100HZ, + .filter = INV_ICM42607_FILTER_BW_25HZ, + }, + .temp_en = false, +}; + +const struct inv_icm42607_hw inv_icm42607_hw_data = { + .whoami = INV_ICM42607_WHOAMI, + .name = "icm42607", + .conf = &inv_icm42607_default_conf, +}; +EXPORT_SYMBOL_NS_GPL(inv_icm42607_hw_data, "IIO_ICM42607"); + +const struct inv_icm42607_hw inv_icm42607p_hw_data = { + .whoami = INV_ICM42607P_WHOAMI, + .name = "icm42607p", + .conf = &inv_icm42607_default_conf, +}; +EXPORT_SYMBOL_NS_GPL(inv_icm42607p_hw_data, "IIO_ICM42607"); + static int inv_icm42607_set_conf(struct inv_icm42607_state *st, const struct inv_icm42607_conf *conf) { diff --git a/drivers/iio/imu/inv_icm42607/inv_icm42607_i2c.c b/drivers/iio/imu/inv_icm42607/inv_icm42607_i2c.c new file mode 100644 index 000000000000..3859517f88c9 --- /dev/null +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607_i2c.c @@ -0,0 +1,84 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2026 InvenSense, Inc. + */ + +#include +#include +#include +#include +#include +#include + +#include "inv_icm42607.h" + +static int inv_icm42607_i2c_bus_setup(struct inv_icm42607_state *st) +{ + unsigned int val; + int ret; + + ret = regmap_clear_bits(st->map, INV_ICM42607_REG_INTF_CONFIG1, + INV_ICM42607_INTF_CONFIG1_I3C_DDR_EN | + INV_ICM42607_INTF_CONFIG1_I3C_SDR_EN); + if (ret) + return ret; + + val = FIELD_PREP(INV_ICM42607_DRIVE_CONFIG2_I2C_MASK, + INV_ICM42607_SLEW_RATE_12_36NS); + ret = regmap_update_bits(st->map, INV_ICM42607_REG_DRIVE_CONFIG2, + INV_ICM42607_DRIVE_CONFIG2_I2C_MASK, val); + if (ret) + return ret; + + return regmap_update_bits(st->map, INV_ICM42607_REG_INTF_CONFIG0, + INV_ICM42607_INTF_CONFIG0_UI_SIFS_CFG_MASK, + INV_ICM42607_INTF_CONFIG0_UI_SIFS_CFG_SPI_DIS); +} + +static int inv_icm42607_probe(struct i2c_client *client) +{ + const struct inv_icm42607_hw *hw = i2c_get_match_data(client); + struct regmap *regmap; + + regmap = devm_regmap_init_i2c(client, &inv_icm42607_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(&client->dev, PTR_ERR(regmap), + "Failed to register i2c regmap %ld\n", + PTR_ERR(regmap)); + + return inv_icm42607_core_probe(regmap, hw, inv_icm42607_i2c_bus_setup); +} + +static const struct i2c_device_id inv_icm42607_id[] = { + { "icm42607", (kernel_ulong_t)&inv_icm42607_hw_data }, + { "icm42607p", (kernel_ulong_t)&inv_icm42607p_hw_data }, + { } +}; +MODULE_DEVICE_TABLE(i2c, inv_icm42607_id); + +static const struct of_device_id inv_icm42607_of_matches[] = { + { + .compatible = "invensense,icm42607", + .data = &inv_icm42607_hw_data, + }, { + .compatible = "invensense,icm42607p", + .data = &inv_icm42607p_hw_data, + }, + { } +}; +MODULE_DEVICE_TABLE(of, inv_icm42607_of_matches); + +static struct i2c_driver inv_icm42607_driver = { + .driver = { + .name = "inv-icm42607-i2c", + .of_match_table = inv_icm42607_of_matches, + }, + .id_table = inv_icm42607_id, + .probe = inv_icm42607_probe, +}; +module_i2c_driver(inv_icm42607_driver); + +MODULE_AUTHOR("InvenSense, Inc."); +MODULE_DESCRIPTION("InvenSense ICM-42607x I2C driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("IIO_ICM42607"); diff --git a/drivers/iio/imu/inv_icm42607/inv_icm42607_spi.c b/drivers/iio/imu/inv_icm42607/inv_icm42607_spi.c new file mode 100644 index 000000000000..4a38a11f2bae --- /dev/null +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607_spi.c @@ -0,0 +1,91 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2026 InvenSense, Inc. + */ + +#include +#include +#include +#include +#include +#include + +#include "inv_icm42607.h" + +static int inv_icm42607_spi_bus_setup(struct inv_icm42607_state *st) +{ + unsigned int val; + int ret; + + ret = regmap_set_bits(st->map, INV_ICM42607_REG_DEVICE_CONFIG, + INV_ICM42607_DEVICE_CONFIG_SPI_AP_4WIRE); + if (ret) + return ret; + + ret = regmap_clear_bits(st->map, INV_ICM42607_REG_INTF_CONFIG1, + INV_ICM42607_INTF_CONFIG1_I3C_DDR_EN | + INV_ICM42607_INTF_CONFIG1_I3C_SDR_EN); + if (ret) + return ret; + + val = FIELD_PREP(INV_ICM42607_DRIVE_CONFIG3_SPI_MASK, + INV_ICM42607_SLEW_RATE_INF_2NS); + ret = regmap_update_bits(st->map, INV_ICM42607_REG_DRIVE_CONFIG3, + INV_ICM42607_DRIVE_CONFIG3_SPI_MASK, val); + if (ret) + return ret; + + return regmap_update_bits(st->map, INV_ICM42607_REG_INTF_CONFIG0, + INV_ICM42607_INTF_CONFIG0_UI_SIFS_CFG_MASK, + INV_ICM42607_INTF_CONFIG0_UI_SIFS_CFG_I2C_DIS); +} + +static int inv_icm42607_probe(struct spi_device *spi) +{ + const struct inv_icm42607_hw *hw = spi_get_device_match_data(spi); + struct regmap *regmap; + + regmap = devm_regmap_init_spi(spi, &inv_icm42607_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(&spi->dev, PTR_ERR(regmap), + "Failed to register spi regmap %ld\n", + PTR_ERR(regmap)); + + return inv_icm42607_core_probe(regmap, hw, + inv_icm42607_spi_bus_setup); +} + +static const struct of_device_id inv_icm42607_of_matches[] = { + { + .compatible = "invensense,icm42607", + .data = &inv_icm42607_hw_data, + }, + { + .compatible = "invensense,icm42607p", + .data = &inv_icm42607p_hw_data, + }, + { } +}; +MODULE_DEVICE_TABLE(of, inv_icm42607_of_matches); + +static const struct spi_device_id inv_icm42607_spi_id_table[] = { + { "icm42607", (kernel_ulong_t)&inv_icm42607_hw_data }, + { "icm42607p", (kernel_ulong_t)&inv_icm42607p_hw_data }, + { } +}; +MODULE_DEVICE_TABLE(spi, inv_icm42607_spi_id_table); + +static struct spi_driver inv_icm42607_driver = { + .driver = { + .name = "inv-icm42607-spi", + .of_match_table = inv_icm42607_of_matches, + }, + .id_table = inv_icm42607_spi_id_table, + .probe = inv_icm42607_probe, +}; +module_spi_driver(inv_icm42607_driver); + +MODULE_AUTHOR("InvenSense, Inc."); +MODULE_DESCRIPTION("InvenSense ICM-42607x SPI driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("IIO_ICM42607"); -- 2.43.0 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip