From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f180.google.com (mail-il1-f180.google.com [209.85.166.180]) (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 83B10239567 for ; Thu, 24 Jul 2025 20:25:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.180 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753388719; cv=none; b=LAc+b/5WueGUzyLnW/b3o0H6rb0AJ3WccADapEq2AS9L+9v3nnBFblyYUWdxyD9BI77d5kcirE5gnO1bM9Vc2VZIUpWc4bCmrpD25unSfW+cNm5M962Qmor8b3ohlVv9xyS7VDfklTQY6Phso98uRfcF+MXgH4u855ciOnfFRfQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753388719; c=relaxed/simple; bh=XqFmUKYyFJuP9gT1VB2HqW1p4rCZAg9SeYxN+uj0LfA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=btPEtyGiZ3P5gNmpvW/zmhAqOqL+0iRq7RKHTkGMMnnGryVhupIYOIFt8lGjLdC08XVloLRU++jpw9yYjtm9iSVNtMmDRtSAqpK2vo0iaq/+488Bkd4AqFp4araONMiCYmmzvKTicTGHDx+MS1LRVlR1jrdSZYpv6zdXZYPXn44= 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=JgsZo+9c; arc=none smtp.client-ip=209.85.166.180 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="JgsZo+9c" Received: by mail-il1-f180.google.com with SMTP id e9e14a558f8ab-3dda399db09so16434465ab.3 for ; Thu, 24 Jul 2025 13:25:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=riscstar-com.20230601.gappssmtp.com; s=20230601; t=1753388715; x=1753993515; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=lrEbbbAkAppzih/TPSBGsQGG4aRG/XXDaMLZfTbNAAw=; b=JgsZo+9cWFnZxYjldlepDi3rd4ZE95SQfWcAGXn3MPqHRc1jow6Hb+tyyI5X7pNxaP 1TFeuWiY86dsU1L4b7pUW+HzrPWxhau+hSP1Q7qK3UvsYr2AwZavTKG81wXGKi8RcfEU 6zaUn/VhSQuTNrfgzjikY18Cc5BbhUx8lN0RhqMbZtN9LTptaEb4rVAGfE3hBrFd/07t SLTDQASrk5T6SC8d+ObTuTRNaqC9kQW1X4nZXUyAZWpg5xMQr8QDzHr+UDX9DkFFhUOY L7CH5UgHTgrcoykxd76LWCuahDu0k89SMhwFZUMA+JtGbSLMR52GQEYj7JQavDwRtvtm cpnw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753388715; x=1753993515; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=lrEbbbAkAppzih/TPSBGsQGG4aRG/XXDaMLZfTbNAAw=; b=TBARU/PP5Q7I2wKDg2ieWoVBIw+GXXWu502S1QUGJB9AuqmRoThBeN6d9Yo+quYwKe WBmbvMslsAkt4m/pisVx2zdYYmtmK2N4CsXmy5O3rfacOQsC/TKLTu3SH2wc5C8rhZl0 QZHdpsjgUIQY4oyoY2HXYAy7ts+UECLexXSkaYxuPXR6cwpKwKixrHP276dIjJ7/yWtA 2VGdxMFwMEVRlJSy/KNf2UcPgHmzM3ine/CiKanB221dYZAYCgR6zSUJPejYvz06FGZe sJLuyWHUIn1IPpmvKh6NfxVE85rN/9ok9caaGbS2WP5BIdQF/mtlFio1K5d+qjlUoFIX lJFw== X-Forwarded-Encrypted: i=1; AJvYcCXWMnvYGE/+qnJs5F0WSHuw1A1iVQkEbPv8gc2UB9aEkzFYW4YEWNLv5K0+BBn+n7XF5OA/uGWH8SllzL4=@vger.kernel.org X-Gm-Message-State: AOJu0YzTAxGFLCx+8ZlZJQD58jZDmDWtCThvxScMlNY/mg5EHIR5nsTO y0L+PFhadLgbjfaWcK45okSOmEsogrxA8rEaJgUmqDB6THK+tEDxw1H+3+BpgYYymS0= X-Gm-Gg: ASbGncsJt9HhYblKHpKl2vtoASIHc6wnaWrGnxt+/It3aqjIQUOxpIkcCDMjIFHpK4q GnsO7t3hx9V1Ir8D9Y23VPLScnb9EFxkYR9yYnjynUjtNFKNExZsf53GxaXRfHWIMIrVZ+795pR cfgEMgsNP80fKAr/ftRPs0oSOnYaT+5+xFmjt56ixxcXrlmn7qqeS2JD/gVmCjzEp/EvyENCFAh yUJ0JKZUpbicOPEV0tBoL4SHxmL5WxWO9V7XKmg/5PQPgqAfxGKZjc0zSRaA0oOu4Vyah0TmxIR 3OXkTlvHKz7YHlAMxwAmBZq7jBG2TVVbegdn+WL8svo+OeyawnjRGLB5GvJUB3RX7/4K0+QESeQ kI0NEJpLW5R3dYiqPxFyYtiecAu2sE6pnY4WE6MfB X-Google-Smtp-Source: AGHT+IE5uFkVwfcYSkjHyZF/c2W8eIlexXUx47CDYyxHzh9kAbZHbQXPpnACm7peHUuN/ml5vSYqEw== X-Received: by 2002:a05:6602:1551:b0:87c:6d49:deb1 with SMTP id ca18e2360f4ac-87c6d4a568fmr1148165839f.8.1753388715572; Thu, 24 Jul 2025 13:25:15 -0700 (PDT) Received: from zoltan.localdomain ([199.59.116.160]) by smtp.gmail.com with ESMTPSA id ca18e2360f4ac-87c74316a3bsm63080239f.23.2025.07.24.13.25.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Jul 2025 13:25:14 -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, linux.amoon@gmail.com, 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 v9 0/8] spacemit: introduce P1 PMIC support Date: Thu, 24 Jul 2025 15:25:01 -0500 Message-ID: <20250724202511.499288-1-elder@riscstar.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The SpacemiT P1 is an I2C-controlled PMIC that implements 6 buck converters and 12 LDOs. It contains a load switch, ADC channels, GPIOs, a real-time clock, and a watchdog timer. This series introduces a multifunction driver for the P1 PMIC as well as drivers for its regulators and RTC. Version 8 provided the ability in "simple-mfd-i2c.c" to specify the max_register value for the regmap configuration as an alternative to providing a "full" regmap structure. Lee Jones asked that the max_register value take precedence if the regmap_config was also provided. This version changes a few things from v8: - Alexandre Belloni's ack is added to patch 5. - The max_register value in simple_mfd_data is always used if it is non-zero, as requested by Lee Jones. - The global regmap_config_8r_8v structure is back to being const again. - A new function simple_regmap_config() has been added in patch 2 to encapsulate the logic that determines what regmap_config structure will be used. - It uses regmap_config_8r_8v if simple_mfd_data is not supplied for some reason. - It uses regmap_config_8r_8v if the simple_mfd_data defines neither regmap_config nor max_register. - Otherwise, it dynamically allocates a regmap_config structure. If simple_mfd_data refers to a regmap_config structure, it is copied into the allocated struct; otherwise regmap_config_8r_8v is copied. - Finally, if the simple_mfd_data structure provides a non-zero max_register value, it is used in the regmap_config. - A small duplicated comment in "simple-mfd-i2c.h" is removed. -Alex This series is available here: https://github.com/riscstar/linux/tree/outgoing/pmic-v9 Between version 8 and version 9: - The max_config value is always used if it is provided with the simple_mfd_data structure. - The regmap_config structure used is allocated dynamically if necessary; otherwise regmap_config_8r_8v is used. - A small duplicated comment is removed Here is version 8 of this series: https://lore.kernel.org/lkml/20250710175107.1280221-1-elder@riscstar.com/ Between version 7 and version 8: - Change the global regmap_config to not be const in patch 2. Here is version 7 of this series: https://lore.kernel.org/lkml/20250702213658.545163-1-elder@riscstar.com/ Between version 6 and version 7: - Revise patch 2 to preserve the option to provide a full regmap config Here is version 6 of this series: https://lore.kernel.org/lkml/20250627142309.1444135-1-elder@riscstar.com/ Between version 5 and version 6: - Added Rob Herring's reviewed-by to patch 1 - Add the simple MFD functionality suggested by Lee Jones - Update patch 3 (previously 2) accordingly Here is version 5 of this series: https://lore.kernel.org/lkml/20250625164119.1068842-1-elder@riscstar.com/ Between version 4 and version 5: - Only check the seconds register for change when looping on read - Return without re-enabling the RTC if writing registers fails - If the RTC is disabled when reading, return an error Here is version 4 of this series: https://lore.kernel.org/lkml/20250625164119.1068842-1-elder@riscstar.com/ More complete history is available at that link. Alex Elder (8): dt-bindings: mfd: add support the SpacemiT P1 PMIC mfd: simple-mfd-i2c: specify max_register mfd: simple-mfd-i2c: add SpacemiT P1 support regulator: spacemit: support SpacemiT P1 regulators rtc: spacemit: support the SpacemiT P1 RTC riscv: dts: spacemit: enable the i2c8 adapter riscv: dts: spacemit: define fixed regulators riscv: dts: spacemit: define regulator constraints .../devicetree/bindings/mfd/spacemit,p1.yaml | 86 +++++++++ .../boot/dts/spacemit/k1-bananapi-f3.dts | 138 +++++++++++++++ arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 7 + arch/riscv/boot/dts/spacemit/k1.dtsi | 11 ++ drivers/mfd/Kconfig | 11 ++ drivers/mfd/simple-mfd-i2c.c | 50 +++++- drivers/mfd/simple-mfd-i2c.h | 5 +- drivers/regulator/Kconfig | 12 ++ drivers/regulator/Makefile | 1 + drivers/regulator/spacemit-p1.c | 157 ++++++++++++++++ drivers/rtc/Kconfig | 10 ++ drivers/rtc/Makefile | 1 + drivers/rtc/rtc-spacemit-p1.c | 167 ++++++++++++++++++ 13 files changed, 647 insertions(+), 9 deletions(-) create mode 100644 Documentation/devicetree/bindings/mfd/spacemit,p1.yaml create mode 100644 drivers/regulator/spacemit-p1.c create mode 100644 drivers/rtc/rtc-spacemit-p1.c base-commit: 9ee814bd78e315e4551223ca7548dd3f6bdcf1ae -- 2.43.0