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[73.228.159.35]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7d44323b4c4sm135708785a.106.2025.06.27.07.23.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Jun 2025 07:23:11 -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 0/8] spacemit: introduce P1 PMIC support Date: Fri, 27 Jun 2025 09:22:59 -0500 Message-ID: <20250627142309.1444135-1-elder@riscstar.com> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-rtc@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. This version adds a new patch to change the simple MFD driver as suggested by Lee Jones. Rather than specifying a full regmap config for each simple MFD, specify the max_register value desired in the simple_mfd_data structure. That supports all existing devices (which don't use the regmap_config option), as well as the SpacemiT P1 (which specifies the max_register). -Alex This series is available here: https://github.com/riscstar/linux/tree/outgoing/pmic-v6 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 | 30 ++-- drivers/mfd/simple-mfd-i2c.h | 2 +- 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, 620 insertions(+), 13 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: 2aeda9592360c200085898a258c4754bfe879921 -- 2.45.2