From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 38A8F3F9F2B; Thu, 9 Jul 2026 12:00:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783598411; cv=none; b=ork8UBcQ3nRMmrHy1rYdQyhwcttySjqQ+cihv1iNzW6qdPQ+RoZtiZwTpYBKd66LwsMCb2C3aUJq2DaJZihENpItsQkJHOIaylbjnWHyodLglNXnHH64a347Wo2k1EUoA4cfYG4hvcGgOCe+MZZPSZ9kBGc5dKG9rdJ4hk5MhMs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783598411; c=relaxed/simple; bh=kwl0XOjYuU+yjnX9PrF2f8rc5CD9oTBprz5Zr74v+Nk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=e5Ltrvs45+I11lgmDa8Hui5sOKtH+arWkNL+Cpx1j+8DxYWmcMYsIE4p0amFwiFLQ2hyfSd45denfiUgVnkT/NMEiNYp3YL9fdWb6wTirjhuhOqbXbFyzqUBe1XXLOOERiZPq0g5ibncvZJwZLkuzIyyDUMxd8EYnC/3B+JfWeQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=YXym7TbL; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="YXym7TbL" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1783598404; bh=kwl0XOjYuU+yjnX9PrF2f8rc5CD9oTBprz5Zr74v+Nk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=YXym7TbLNL6bxTw0o78eEps3QhL7tbSUOFoHcANiMpU33OIpJygX/HfSf5wP/iki1 Xr5Sl8I09r/+FnVufmJBnBNbUAFHimcrCSYOWFGZ6NAwRXDclLGYasm4atXtMyAK/p cg8GSG3XkBe1go9mXULwvruvq2aqBiD7fNIrXjBBT8JUs6fiqbWzcRZ/FFGBELKtgR JJt1wmiCNRHK2V7K51OYIt3E+LZsXNzQQ5dEwQsNZ6+Mb9c2/h9mpCWuYyXCmWt6bE L4NreGPSTptX7AY5tZdo4L+DXO25IrF2MbHD4wD1RaOC0uA5IXDxxH7oOUftQ64kO6 h0ptHSCLgYSqg== Received: from [100.64.1.21] (unknown [100.64.1.21]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange x25519) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id 5213717E019E; Thu, 09 Jul 2026 14:00:03 +0200 (CEST) Message-ID: <0ae1db88-1dad-4f8b-a719-370c3aa8aaf4@collabora.com> Date: Thu, 9 Jul 2026 14:00:03 +0200 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v9 0/9] Add support for MT6392 PMIC To: Luca Leonardo Scorcia , linux-mediatek@lists.infradead.org Cc: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Sen Chu , Sean Wang , Macpaul Lin , Lee Jones , Matthias Brugger , Liam Girdwood , Mark Brown , Linus Walleij , Louis-Alexis Eyraud , Val Packett , Julien Massot , Fabien Parent , Akari Tsuyukusa , Chen Zhong , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org References: <20260621081634.467858-1-l.scorcia@gmail.com> From: AngeloGioacchino Del Regno Content-Language: en-US In-Reply-To: <20260621081634.467858-1-l.scorcia@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 6/21/26 10:13, Luca Leonardo Scorcia wrote: > The MediaTek MT6392 PMIC is usually found on devices powered by > the MT8516/MT8167 SoC and is yet another MT6323/MT6397 variant. > > This series is mostly based around patches submitted a couple > years ago by Fabien Parent and not merged and from Val Packett's > submission from Jan 2025 that included extra cleanups, fixes, and a > new dtsi file similar to ones that exist for other PMICs. Some > comments weren't addressed and the series was ultimately not merged. > > These patches enable four functions: keys, regulator, pinctrl and RTC. > Mono speaker amp will follow later as I need to work further on the > audio codec. > > I added a handful of device tree improvements to fix some dtbs_check > errors, added support for the pinctrl device and addressed the comments > from last year's reviews. > > Please note that patch 0006 and 0008 depend on patch 0005 as they need the > registers.h file, but belong to different driver areas. I'm not sure if > I'm supposed to squash them even if they belong to different driver > areas of if it's fine like this. Any advice is welcome. > > Patch 0009 also depends on patch 0003 because of mt6392-regulator.h. > > The series has been tested on Xiaomi Mi Smart Clock X04G and on the > Lenovo Smart Clock 2 CD-24502F. > While series is Reviewed-by: AngeloGioacchino Del Regno Thanks! Angelo > Changes in v9: > - Correct binding for vrtc as it does not support mode setting. > > From sashiko: > - Added missing include in MFD documentation example. > - Fixed constraints for regulator-initial-mode in regulator binding. > - Fixed wrong register write while setting LDO standby mode. > - Added missing pmic interrupt definition in the pumpkin-common include. > > Changes in v8 [9]: > From reviewers: > - Added example code to the MFD device binding, removed it from the > regulators docs. > - Added minItems/maxItems constraints on the regulator mode definitions, > improved the mode constants. > - Fixed formatting issues in the regulator binding. > - Import the mt6392.dtsi file in pumpkin-common.dtsi, as it was originally > meant in [8]. > > From sashiko: > - Added more explicit constraints on the regulator modes definitions. > - Use the appropriate modeget register for LDO regulators, Buck registers > don't have the corresponding register according to the data sheet. > - Added the missing of_map_mode function. > - Removed some debugging code that had no use and masked error codes. > > Changes in v7 [7]: > - Removed patch 0008 dependency on patch 0003. > - Reintroduced the regulator driver. In earlier revisions of this series, > it was proposed to remove the dedicated compatible for the regulator > device [3]. The driver does not use actually it, but it is not possible > at this time to remove it from the bindings since it's a required > property. > > Making the regulator-required property conditional was NACKed in [5], > with the suggestion to create a separate binding altogether for devices > that do not require the compatible property. I tried implementing this, > but since the parent device needs to be declared as compatible with > mt6323, it leads to a warning in dt_binding_check since mt6323 would > be declared as a compatible in both mt6392 and mt6397. > > In the end the only regulator driver from the mt6397 documentation that > still declares an of_match is mt6397-regulator and it does not seem > to be necessary, so it should be possible to remove it and make the > regulator compatible optional for all regulators, but that change would > probably deserve its own separate patch series. > > Changes in v6 [6]: > - Dropped the regulators driver for the moment > - Explained the FCHR key name origin in the commit message > - Introduced the MFD_CELL_* macro in the sub-devices definitions. > A separate, independent commit introduced MFD_CELL_* to all the > subdevices in the mt6397-core.c file for consistency > - Replaced of_device_get_match_data with device_get_match_data > - Removed the mfd_match_data enum in favor of the preexisting > chip_id enum > - Adjusted the error message if the device is unsupported > > Changes in v5 [5]: > - Double checked regulator driver with data sheet and Android sources. > The data sheet I have misses a lot of register descriptions, but > Android sources have been helpful to fill the gaps > - Reintroduced the required attribute for the regulator compatible > in the bindings > - Fixed the missing reference to the MT6392 schema > - Fixed casts/unused vars reported by kernel test robot > - Removed Reviewed-by tags from the regulator patches as they have been > modified in this version > > Changes in v4 [4]: > - Dropped usage of the regulator compatible > - Fixed commit messages text to properly reference the target subsystem > - Added supply rails to the regulator > - Reworked the regulator schema and PMIC dtsi. Now all supplies are > documented and the schema no longer includes voltage information > - Removed redundant ldo- / buck- prefixes > - Renamed the pinfunc header to mediatek,mt6392-pinfunc.h > - Modified the MFD driver to use a simple identifier in the of_match > data properties > > Changes in v3 [3]: > - Added pinctrl device > - Changed mt6397-rtc fallback to mt6323-rtc > - Added schema for regulators > - Fixed checkpatch issues > > Changes in v2 [2]: > - Replaced explicit compatibles with fallbacks > > Initial version: [1] > > [1] https://lore.kernel.org/linux-mediatek/cover.1771865014.git.l.scorcia@gmail.com/ > [2] https://lore.kernel.org/linux-mediatek/20260306120521.163654-1-l.scorcia@gmail.com/ > [3] https://lore.kernel.org/linux-mediatek/20260317184507.523060-1-l.scorcia@gmail.com/ > [4] https://lore.kernel.org/linux-mediatek/20260330083429.359819-1-l.scorcia@gmail.com/ > [5] https://lore.kernel.org/linux-mediatek/20260420213529.1645560-1-l.scorcia@gmail.com/ > [6] https://lore.kernel.org/linux-mediatek/20260612200717.361018-1-l.scorcia@gmail.com/ > [7] https://lore.kernel.org/linux-mediatek/20260615071836.362883-1-l.scorcia@gmail.com/ > [8] https://lore.kernel.org/linux-mediatek/20190323211612.860-25-fparent@baylibre.com/ > [9] https://lore.kernel.org/linux-mediatek/20260620200032.334192-1-l.scorcia@gmail.com/ > > Fabien Parent (3): > dt-bindings: input: mtk-pmic-keys: Add MT6392 PMIC keys > mfd: mt6397: Add support for MT6392 PMIC > regulator: Add MediaTek MT6392 regulator > > Luca Leonardo Scorcia (4): > dt-bindings: mfd: mt6397: Add MT6392 PMIC > regulator: dt-bindings: Add MediaTek MT6392 PMIC > mfd: mt6397: Use MFD_CELL_* to describe sub-devices > pinctrl: mediatek: mt6397: Add MediaTek MT6392 > > Val Packett (2): > input: keyboard: mtk-pmic-keys: Add MT6392 support > arm64: dts: mediatek: Add MediaTek MT6392 PMIC dtsi > > .../bindings/input/mediatek,pmic-keys.yaml | 1 + > .../bindings/mfd/mediatek,mt6397.yaml | 75 ++ > .../regulator/mediatek,mt6392-regulator.yaml | 112 +++ > arch/arm64/boot/dts/mediatek/mt6392.dtsi | 145 ++++ > .../boot/dts/mediatek/pumpkin-common.dtsi | 7 + > drivers/input/keyboard/mtk-pmic-keys.c | 17 + > drivers/mfd/mt6397-core.c | 295 ++++--- > drivers/mfd/mt6397-irq.c | 8 + > drivers/pinctrl/mediatek/pinctrl-mt6397.c | 37 +- > drivers/pinctrl/mediatek/pinctrl-mtk-mt6392.h | 64 ++ > drivers/regulator/Kconfig | 9 + > drivers/regulator/Makefile | 1 + > drivers/regulator/mt6392-regulator.c | 764 ++++++++++++++++++ > .../regulator/mediatek,mt6392-regulator.h | 23 + > include/linux/mfd/mt6392/core.h | 43 + > include/linux/mfd/mt6392/registers.h | 488 +++++++++++ > include/linux/mfd/mt6397/core.h | 1 + > include/linux/regulator/mt6392-regulator.h | 42 + > 18 files changed, 1970 insertions(+), 162 deletions(-) > create mode 100644 Documentation/devicetree/bindings/regulator/mediatek,mt6392-regulator.yaml > create mode 100644 arch/arm64/boot/dts/mediatek/mt6392.dtsi > create mode 100644 drivers/pinctrl/mediatek/pinctrl-mtk-mt6392.h > create mode 100644 drivers/regulator/mt6392-regulator.c > create mode 100644 include/dt-bindings/regulator/mediatek,mt6392-regulator.h > create mode 100644 include/linux/mfd/mt6392/core.h > create mode 100644 include/linux/mfd/mt6392/registers.h > create mode 100644 include/linux/regulator/mt6392-regulator.h >