From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qv1-f53.google.com (mail-qv1-f53.google.com [209.85.219.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E6B4E1537DA for ; Sun, 22 Jun 2025 03:29:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750562992; cv=none; b=HC1WzPB/pl8V7xGdKnIMZofHlmzE/d+qGZLeoB0l7Zu5Jdd3ZAr1DHJTNl6SoomaQyiEmP6DVykt6ET/zQ9g6b2sgw6CHpn/43Ku9YjWgMtjFY3rWh8wWKFyFMxL2eGEHtB2gEmLqg8eZaZnGkeT7Lwq9351yLUJjYrCO5gNQ1M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750562992; c=relaxed/simple; bh=j3Wcubq/3SRFXIT3gXxJqmDlxCU0DsP5Pxf1kaaTIt4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fsuWmdOxMhgLt8Myqebvc/1HzIg/GiOXbyhgxajE95uTn1E/SUJgO02KBhhuI7703nYRrLG3RtD/nMSkiR6wGgYD/oZ+bVzySglVYeg5mG1r6RFaeE8vSg9nKTloG7XLK4xhYBSpiZ5VlEqOniphwTGO/rSaMYbAKvhhCnWJrUE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com; spf=pass smtp.mailfrom=riscstar.com; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b=e+vs728S; arc=none smtp.client-ip=209.85.219.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=riscstar.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b="e+vs728S" Received: by mail-qv1-f53.google.com with SMTP id 6a1803df08f44-6f8aa9e6ffdso29810676d6.3 for ; Sat, 21 Jun 2025 20:29:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=riscstar-com.20230601.gappssmtp.com; s=20230601; t=1750562990; x=1751167790; darn=lists.linux.dev; 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=2q5ZDFopB9ZTQOgdTyWswTXMkdYAfsuV4jYCvMQMM3U=; b=e+vs728Sr903TjB45j0dcQ7R4/CdDst43vpAAeyCt5DbuHdU6F5SHuQGA8QN5//4Bp UC2O+hJaz9mezWYENLYDHilybQ9JMt4wZ7W3D3kbbiyHASoH93Lxx8wTNGVVe2/sRZE7 yazG9xBi5HrVrJ4ZWuYapm0CQd7P1hsCkdRxnudW7of0cP+3xiaxRswzICWW1MBTKyEw Fnb5MtQ50pkCiO5ccSwt8CC4ji/0Eyed4Q0ohDHw/G83PLYw8Nj0MI2ZEYypUBbNmGAD o5eNJjfAJi6m0Zv1edZwK1fo3kO++6m7KMfyXz1XWPLw+5fCtq2eyVl3tO+8TOIjP8MS u1Ug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1750562990; x=1751167790; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=2q5ZDFopB9ZTQOgdTyWswTXMkdYAfsuV4jYCvMQMM3U=; b=YB/DTNJ6YMZgWli8kjhQs1EUJi+VkRtptwKDwojh1iHldoK9KOFZwvtgCXSv3C4umQ CjxeI67/cD0bP+XHnl1G9DkAYtxDYWGao2FxjfxoIjAr2InSblqqQLdLdthWrcQPTMf/ ifVReAwItAoTCp7EY5FYi5pQ6nhZiO21EsfxhjhN1Ch2mhTLnXoQOpbimBIDhXOa3uO/ rsvJJ/Z+lOPADvxcUywz4Vb7WDuv6Lj+uiqLB5LwThj+hqN3k9nT3Uwbgcge9QQuwLGk 0uH2+eri0dxVSQ5wjkCM3P+nVfsq4oriEsD78/I32XOZr+jRQDpb6B3nGISTigqrNZFp dzxA== X-Forwarded-Encrypted: i=1; AJvYcCXETs5YG/hfJJlJt/ZCcOZWbhcQwHhsVLgWmfTl3kz0PT54MblrXNc9jgcVi6vM1ewlcnFZAaybLQ==@lists.linux.dev X-Gm-Message-State: AOJu0YzmwpTJlfrv/AfMgj0ygpZCJ+pf1XqIZ+OpTDVpIyGjork5bGRE Yej3yY489x1QI/4vBd3XotunZHreAsaSvLicSMdZjFqg0v9NtVcJWulPmgBW7PwWsdg= X-Gm-Gg: ASbGncsllOGA2C6+TtBof1ABiAcMLweyniOCL4sjXanxzsRlsvcKx+MQQx4LqJ9sz7k ITZI1FYpjocZRIgHXSCI7mXl0Y2GHLMx5rFLZ6rjjpW5vODYDh+G61MfKFl6ij7ef+rxUZiRbwJ m9QpUzndYzpCKiTvUXQ2Yvdztpq9MQg8bhqnoFigE+nVI6BWKIFW4AE+g4eHwoFeBU2O7I4KXi/ RLLT40E9q9995Vo9gYpgWYej+70HJK833Mk84XwFV7Nh1YitiJvta8DloARafMw7Eb5u1EEkhT+ Q0LX2TnHtw+BteOXU+q68twjZxnKhi4MSfvrMbgXp4PZBlq/qKHfF0MbFXh+F9i6cAfrROS2O5u klopmQIt/5KtHtx9lgFSn+Fg8Zf1gugj9npg= X-Google-Smtp-Source: AGHT+IGrT8KotciRfnr+PRMCDbGWqUY755+QZ3ISt9cO2eDb4yJt8H6uxm2PSoY69jgpK0vLweGN0g== X-Received: by 2002:a05:6214:540c:b0:6fb:5bd0:c71c with SMTP id 6a1803df08f44-6fd0a531a3fmr168904366d6.23.1750562989958; Sat, 21 Jun 2025 20:29:49 -0700 (PDT) Received: from localhost.localdomain (c-73-228-159-35.hsd1.mn.comcast.net. [73.228.159.35]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6fd0945183dsm30014526d6.44.2025.06.21.20.29.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 21 Jun 2025 20:29:49 -0700 (PDT) From: Alex Elder To: lee@kernel.org, alexandre.belloni@bootlin.com, lgirdwood@gmail.com, broonie@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: dlan@gentoo.org, wangruikang@iscas.ac.cn, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, troymitchell988@gmail.com, guodong@riscstar.com, devicetree@vger.kernel.org, spacemit@lists.linux.dev, linux-rtc@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v3 3/7] regulator: spacemit: support SpacemiT P1 regulators Date: Sat, 21 Jun 2025 22:29:35 -0500 Message-ID: <20250622032941.3768912-4-elder@riscstar.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250622032941.3768912-1-elder@riscstar.com> References: <20250622032941.3768912-1-elder@riscstar.com> Precedence: bulk X-Mailing-List: spacemit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add support for the regulators found in the SpacemiT P1 PMIC. This PMIC provides 6 buck converters and 12 LDO regulators. The PMIC is implemented as a multi-function device. These regulators are probed based on this driver being named in a MFD cell in the simple MFD I2C driver. Signed-off-by: Alex Elder Reviewed-by: Mark Brown --- drivers/regulator/Kconfig | 12 +++ drivers/regulator/Makefile | 1 + drivers/regulator/spacemit-p1.c | 157 ++++++++++++++++++++++++++++++++ 3 files changed, 170 insertions(+) create mode 100644 drivers/regulator/spacemit-p1.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 7423954153b07..3e7feeebf8aca 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -1395,6 +1395,18 @@ config REGULATOR_SLG51000 The SLG51000 is seven compact and customizable low dropout regulators. +config REGULATOR_SPACEMIT_P1 + tristate "SpacemiT P1 regulators" + depends on ARCH_SPACEMIT || COMPILE_TEST + select MFD_SPACEMIT_P1 + default ARCH_SPACEMIT + help + Enable support for regulators implemented by the SpacemiT P1 + power controller. The P1 implements 6 high-efficiency buck + converters and 12 programmable LDO regulators. To compile this + driver as a module, choose M here. The module will be called + "spacemit-pmic". + config REGULATOR_STM32_BOOSTER tristate "STMicroelectronics STM32 BOOSTER" depends on ARCH_STM32 || COMPILE_TEST diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index be98b29d6675d..278f5b8d1c7d7 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -162,6 +162,7 @@ obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o obj-$(CONFIG_REGULATOR_SC2731) += sc2731-regulator.o obj-$(CONFIG_REGULATOR_SKY81452) += sky81452-regulator.o obj-$(CONFIG_REGULATOR_SLG51000) += slg51000-regulator.o +obj-$(CONFIG_REGULATOR_SPACEMIT_P1) += spacemit-p1.o obj-$(CONFIG_REGULATOR_STM32_BOOSTER) += stm32-booster.o obj-$(CONFIG_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o obj-$(CONFIG_REGULATOR_STM32_PWR) += stm32-pwr.o diff --git a/drivers/regulator/spacemit-p1.c b/drivers/regulator/spacemit-p1.c new file mode 100644 index 0000000000000..d437e6738ea1e --- /dev/null +++ b/drivers/regulator/spacemit-p1.c @@ -0,0 +1,157 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for regulators found in the SpacemiT P1 PMIC + * + * Copyright (C) 2025 by RISCstar Solutions Corporation. All rights reserved. + * Derived from code from SpacemiT. + * Copyright (c) 2023, SPACEMIT Co., Ltd + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define MOD_NAME "spacemit-p1-regulator" + +enum p1_regulator_id { + P1_BUCK1, + P1_BUCK2, + P1_BUCK3, + P1_BUCK4, + P1_BUCK5, + P1_BUCK6, + + P1_ALDO1, + P1_ALDO2, + P1_ALDO3, + P1_ALDO4, + + P1_DLDO1, + P1_DLDO2, + P1_DLDO3, + P1_DLDO4, + P1_DLDO5, + P1_DLDO6, + P1_DLDO7, +}; + +static const struct regulator_ops p1_regulator_ops = { + .list_voltage = regulator_list_voltage_linear_range, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .set_voltage_time_sel = regulator_set_voltage_time_sel, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, +}; + +/* Selector value 255 can be used to disable the buck converter on sleep */ +static const struct linear_range p1_buck_ranges[] = { + REGULATOR_LINEAR_RANGE(500000, 0, 170, 5000), + REGULATOR_LINEAR_RANGE(1375000, 171, 254, 25000), +}; + +/* Selector value 0 can be used for suspend */ +static const struct linear_range p1_ldo_ranges[] = { + REGULATOR_LINEAR_RANGE(500000, 11, 127, 25000), +}; + +/* These define the voltage selector field for buck and LDO regulators */ +#define BUCK_MASK GENMASK(7, 0) +#define LDO_MASK GENMASK(6, 0) + +#define P1_ID(_TYPE, _n) P1_ ## _TYPE ## _n +#define P1_ENABLE_REG(_off, _n) ((_off) + 3 * ((_n) - 1)) + +#define P1_REG_DESC(_TYPE, _type, _n, _s, _off, _mask, _nv, _ranges) \ + { \ + .name = #_type #_n, \ + .supply_name = _s, \ + .of_match = of_match_ptr(#_type #_n), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = P1_ID(_TYPE, _n), \ + .n_voltages = _nv, \ + .ops = &p1_regulator_ops, \ + .owner = THIS_MODULE, \ + .linear_ranges = _ranges, \ + .n_linear_ranges = ARRAY_SIZE(_ranges), \ + .vsel_reg = P1_ENABLE_REG(_off, _n) + 1, \ + .vsel_mask = _mask, \ + .enable_reg = P1_ENABLE_REG(_off, _n), \ + .enable_mask = BIT(0), \ + } + +#define P1_BUCK_DESC(_n) \ + P1_REG_DESC(BUCK, buck, _n, "vcc", 0x47, BUCK_MASK, 254, p1_buck_ranges) + +#define P1_ALDO_DESC(_n) \ + P1_REG_DESC(ALDO, aldo, _n, "vcc", 0x5b, LDO_MASK, 117, p1_ldo_ranges) + +#define P1_DLDO_DESC(_n) \ + P1_REG_DESC(DLDO, dldo, _n, "buck5", 0x67, LDO_MASK, 117, p1_ldo_ranges) + +static const struct regulator_desc p1_regulator_desc[] = { + P1_BUCK_DESC(1), + P1_BUCK_DESC(2), + P1_BUCK_DESC(3), + P1_BUCK_DESC(4), + P1_BUCK_DESC(5), + P1_BUCK_DESC(6), + + P1_ALDO_DESC(1), + P1_ALDO_DESC(2), + P1_ALDO_DESC(3), + P1_ALDO_DESC(4), + + P1_DLDO_DESC(1), + P1_DLDO_DESC(2), + P1_DLDO_DESC(3), + P1_DLDO_DESC(4), + P1_DLDO_DESC(5), + P1_DLDO_DESC(6), + P1_DLDO_DESC(7), +}; + +static int p1_regulator_probe(struct platform_device *pdev) +{ + struct regulator_config config = { }; + struct device *dev = &pdev->dev; + u32 i; + + /* + * The parent device (PMIC) owns the regmap. Since we don't + * provide one in the config structure, that one will be used. + */ + config.dev = dev->parent; + + for (i = 0; i < ARRAY_SIZE(p1_regulator_desc); i++) { + const struct regulator_desc *desc = &p1_regulator_desc[i]; + struct regulator_dev *rdev; + + rdev = devm_regulator_register(dev, desc, &config); + if (IS_ERR(rdev)) + return dev_err_probe(dev, PTR_ERR(rdev), + "error registering regulator %s\n", + desc->name); + } + + return 0; +} + +static struct platform_driver p1_regulator_driver = { + .probe = p1_regulator_probe, + .driver = { + .name = MOD_NAME, + }, +}; + +module_platform_driver(p1_regulator_driver); + +MODULE_DESCRIPTION("SpacemiT P1 regulator driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" MOD_NAME); -- 2.45.2