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Message-ID: <20250626141827.1140403-1-elder@riscstar.com>
Date: Thu, 26 Jun 2025 09:18:19 -0500
From: Alex Elder <elder@...cstar.com>
To: lee@...nel.org,
lgirdwood@...il.com,
broonie@...nel.org,
alexandre.belloni@...tlin.com,
robh@...nel.org,
krzk+dt@...nel.org,
conor+dt@...nel.org
Cc: mat.jonczyk@...pl,
dlan@...too.org,
paul.walmsley@...ive.com,
palmer@...belt.com,
aou@...s.berkeley.edu,
alex@...ti.fr,
troymitchell988@...il.com,
guodong@...cstar.com,
linux-rtc@...r.kernel.org,
devicetree@...r.kernel.org,
linux-riscv@...ts.infradead.org,
spacemit@...ts.linux.dev,
linux-kernel@...r.kernel.org
Subject: [PATCH v5 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 version updates the RTC code in patch 4 based on a few review
comments from Alexandre Belloni.
-Alex
This series is available here:
https://github.com/riscstar/linux/tree/outgoing/pmic-v5
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 (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 | 11 ++
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-spacemit-p1.c | 167 ++++++++++++++++++
12 files changed, 619 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-spacemit-p1.c
base-commit: ecb259c4f70dd5c83907809f45bf4dc6869961d7
--
2.45.2
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