linux-kernel - [PATCH v3 0/7] spacemit: introduce P1 PMIC support

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Message-ID: <20250622032941.3768912-1-elder@riscstar.com>
Date: Sat, 21 Jun 2025 22:29:32 -0500
From: Alex Elder <elder@...cstar.com>
To: lee@...nel.org,
	alexandre.belloni@...tlin.com,
	lgirdwood@...il.com,
	broonie@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org
Cc: dlan@...too.org,
	wangruikang@...as.ac.cn,
	paul.walmsley@...ive.com,
	palmer@...belt.com,
	aou@...s.berkeley.edu,
	alex@...ti.fr,
	troymitchell988@...il.com,
	guodong@...cstar.com,
	devicetree@...r.kernel.org,
	spacemit@...ts.linux.dev,
	linux-rtc@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 0/7] spacemit: introduce P1 PMIC support

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 series is available here:
  https://github.com/riscstar/linux/tree/outgoing/pmic-v3

					-Alex
Between version 2 and version 3:
  - Removed "spacemit-pmic.c" and updated "simple-mfd-i2c.c" instead
  - Added an RTC driver, so that the MFD has more than one sub-device
  - Other suggestions were directed at "spacemit-pmic.c"

Here is version 2 of this series:
  https://lore.kernel.org/lkml/20250613210150.1468845-1-elder@riscstar.com/

Between version 1 and version 2:
  - Added Reviewed-by tag from Mark Brown to patch 3
  - Implemented suggestions from Vivian Wang:
      - Fixed a typo in the subject line in patch 1
      - Now use module_i2c_driver() for the PMIC driver in patch 2
      - Added MODULE_ALIAS() for both drivers (patches 2 and 3)
      - Defined and used DRV_NAME in both drivers
      - Added additional Kconfig module help text for both drivers

Here is version 1 of this series:
  https://lore.kernel.org/lkml/20250613210150.1468845-1-elder@riscstar.com/

Alex Elder (7):
  dt-bindings: mfd: add support the SpacemiT P1 PMIC
  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                           |  10 ++
 drivers/mfd/simple-mfd-i2c.c                  |  18 ++
 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-p1.c                          | 137 +++++++++++++++
 12 files changed, 588 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/spacemit,p1.yaml
 create mode 100644 drivers/regulator/spacemit-p1.c
 create mode 100644 drivers/rtc/rtc-p1.c


base-commit: 5d4809e25903ab8e74034c1f23c787fd26d52934
-- 
2.45.2