From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qk1-f177.google.com (mail-qk1-f177.google.com [209.85.222.177]) (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 01BF42E2665 for ; Fri, 27 Jun 2025 14:23:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751034199; cv=none; b=TyTDy1kB7tAvPcDyTiayQHN+BiUXBQJawt6c+E3SbRVJ9faPR7zO/vHWycnZgLzjZWh7jD+HDIldSPh/eTXQYVhc7RZ6S0F9+ravvPrcAOZbG9M1LAVF/PO7plQ67kQfCoClA9mna8SwEHHaLrgiERAab/xoUp2zFy2K1k4KHa8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751034199; c=relaxed/simple; bh=b+d+F+NfMBETraAATTzaFJEm4lSRbVG8DDRdAYWb/+o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iIdt4FXadMEIh/TIGgWCKddrDsbTnZi/P+HjevB8EQtEC3+nkot2OENQ/Kyox+nga4AnXqAp1i8GfQBC3fWey4DK5P8OilT+gmH6gMB+odYchG7VIx+RO9XVv7v4n4RJYsBGF8xDqpM3OEA2i1lHpTxzq03655hxAPXvRCW3OO8= 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=ffwa+CxS; arc=none smtp.client-ip=209.85.222.177 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="ffwa+CxS" Received: by mail-qk1-f177.google.com with SMTP id af79cd13be357-7d21cecc11fso352225685a.3 for ; Fri, 27 Jun 2025 07:23:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=riscstar-com.20230601.gappssmtp.com; s=20230601; t=1751034197; x=1751638997; darn=vger.kernel.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=ImtcgLzIrcawut2MtN3yGlOkEUyWKtboJHD9r18H14s=; b=ffwa+CxSzk4SvAVA72UEwVhg11ozMyEh/5B9cXDMFsGfzkr51L01Mu421D3XkXGFsX 5pd86qML+wSyKNppvIboOygQdRniJ4EiQA5EfhrVcVlM4zNO3Flqyhf3ITdEK2YKUD7n lOEDAVKcHb83kGG4ZYY7/yGgvo6MQZ+jPggR3SBa3K6MUqVINzn86QgEbyZSE/2bAuCF A0CHvFLyOOEOmjD58TNfIBxNkH/8rL77K7fBZAJzifuI39ZLmXhNeKrTg3rn5AP8LAY2 HUlHTFmk8ZCxfD7Ge1cV6vCWnR8Uewb5ZutbnB819m/iBorbv3Jim4OmPTi8OoihJbNa mBjQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751034197; x=1751638997; 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=ImtcgLzIrcawut2MtN3yGlOkEUyWKtboJHD9r18H14s=; b=slPbxS07F220kzQOKOB/e2yN72IzSDKt3tHoR1qNYJCafnk9nZrXdPIEk8PIp1G9QK tsI/duyOcYfxuyzb6YTUx+m82SUY8QEfn1/FWqiUWGNQ5WwNQv0T6XLkh/4El1hp5io9 5oIJsEPu5KXu8/jB0g+PfdXKijjdLjRFRELmrv/YLq1+JiotsZg2t0Kmr3zamhBUvt6h FjxZAju3a7Zbi6rFoFQuuLWoh+Q1k/XiRkaCASYYdtiSSyPdzTl6uHyt/+IUxuTVouCc z0RUF6oHWdBwy0+MufJlqLSUDSJkMQKdJ8J+ZHY6VjJecfTCsho4IxaySQoyTKV3ICBW ywYA== X-Forwarded-Encrypted: i=1; AJvYcCXB03hsXBGYS0VzSZwMa8rxbP2AemKUhTUFPZ8T3OjcswLyZEBXSX9su3MQe8j1dvEjy2749gUjfP4=@vger.kernel.org X-Gm-Message-State: AOJu0YzaBd/KNKyPXZYSVPKgG6zThfTwVNhVHuebIeLjKJTxELOrYFhU +P0MhxgIHEq+WjjZQG888b/qRXGZoNjrl0hXmA/4afZG3rJNyQGzYqZ9YNBHhJT72GE= X-Gm-Gg: ASbGncutJwWag0MCVucBNaGeokF+NuvTGkkLpI4FzxafQ701f2VeJlaKPpXovqfWDKN txXlKS59KEmctjAy2R5SxOR2BaXsKeVgEK7wZeX1pDv+9VMRWnVRRK2JcOwBkUPpy7YapbG0hnj rxf5wzwy8eJkvBDmVKMfQvFbNTajhhaUVcu+JxNHyxE+qpTWBFLUvjYTWUUXbMD5nlaTg338U3Y 8L+ecTH2Y71B/pbLIQpYEcg5KPp89WbJDxt32J1n5IGzEwu53J6+smgNWNOoXUbPOTaLE1u4rJ0 BVHhXo2HIQWaEACnhpoxGJ3QPkxVqp0Y9dJaLKP9ziYV77CkN43PAeYkRViVQ+/SfWLyGUptXTz v3kdeaJNaubZFWfky4Z0C9LlKU2JUVoXpx/lwIZ7HK23Tdg== X-Google-Smtp-Source: AGHT+IGVK1ecJTiuAsTlRFYL0Ii2pcfzFGLsDuQjxdb465KNunRg1KkMZc7lQpWfV88VHg+Ky4I8gw== X-Received: by 2002:a05:620a:178c:b0:7d4:43cf:68e with SMTP id af79cd13be357-7d443cf0696mr474156085a.17.1751034196660; Fri, 27 Jun 2025 07:23:16 -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 af79cd13be357-7d44323b4c4sm135708785a.106.2025.06.27.07.23.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Jun 2025 07:23:16 -0700 (PDT) From: Alex Elder To: lee@kernel.org, lgirdwood@gmail.com, broonie@kernel.org, alexandre.belloni@bootlin.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: mat.jonczyk@o2.pl, dlan@gentoo.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, troymitchell988@gmail.com, guodong@riscstar.com, linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v6 3/8] mfd: simple-mfd-i2c: add SpacemiT P1 support Date: Fri, 27 Jun 2025 09:23:02 -0500 Message-ID: <20250627142309.1444135-4-elder@riscstar.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250627142309.1444135-1-elder@riscstar.com> References: <20250627142309.1444135-1-elder@riscstar.com> Precedence: bulk X-Mailing-List: linux-rtc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Enable support for the RTC and regulators found in the SpacemiT P1 PMIC. Support is implemented by the simple I2C MFD driver. The P1 PMIC is normally implemented with the SpacemiT K1 SoC. This PMIC provides 6 buck converters and 12 LDO regulators. It also implements a switch, watchdog timer, real-time clock, and more. Initially its RTC and regulators are supported. Signed-off-by: Alex Elder --- v6: - Update to specify max_register rather than a full regmap config drivers/mfd/Kconfig | 11 +++++++++++ drivers/mfd/simple-mfd-i2c.c | 12 ++++++++++++ 2 files changed, 23 insertions(+) diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 6fb3768e3d71c..01805c3eec57d 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -1182,6 +1182,17 @@ config MFD_QCOM_RPM Say M here if you want to include support for the Qualcomm RPM as a module. This will build a module called "qcom_rpm". +config MFD_SPACEMIT_P1 + tristate "SpacemiT P1 PMIC" + depends on I2C + select MFD_SIMPLE_MFD_I2C + help + This option supports the I2C-based SpacemiT P1 PMIC, which + contains regulators, a power switch, GPIOs, an RTC, and more. + This option is selected when any of the supported sub-devices + is configured. The basic functionality is implemented by the + simple MFD I2C driver. + config MFD_SPMI_PMIC tristate "Qualcomm SPMI PMICs" depends on ARCH_QCOM || COMPILE_TEST diff --git a/drivers/mfd/simple-mfd-i2c.c b/drivers/mfd/simple-mfd-i2c.c index c1dc315d44dcf..81573a4830076 100644 --- a/drivers/mfd/simple-mfd-i2c.c +++ b/drivers/mfd/simple-mfd-i2c.c @@ -87,12 +87,24 @@ static const struct simple_mfd_data maxim_mon_max77705 = { .mfd_cell_size = ARRAY_SIZE(max77705_sensor_cells), }; +static const struct mfd_cell spacemit_p1_cells[] = { + { .name = "spacemit-p1-regulator", }, + { .name = "spacemit-p1-rtc", }, +}; + +static const struct simple_mfd_data spacemit_p1 = { + .mfd_cell = spacemit_p1_cells, + .mfd_cell_size = ARRAY_SIZE(spacemit_p1_cells), + .max_register = 0xaa, +}; + static const struct of_device_id simple_mfd_i2c_of_match[] = { { .compatible = "kontron,sl28cpld" }, { .compatible = "silergy,sy7636a", .data = &silergy_sy7636a}, { .compatible = "maxim,max5970", .data = &maxim_max5970}, { .compatible = "maxim,max5978", .data = &maxim_max5970}, { .compatible = "maxim,max77705-battery", .data = &maxim_mon_max77705}, + { .compatible = "spacemit,p1", .data = &spacemit_p1, }, {} }; MODULE_DEVICE_TABLE(of, simple_mfd_i2c_of_match); -- 2.45.2