linux-kernel - [PATCH 0/3] riscv: dts: spacemit: Add PMIC and regulators constraints for Milk-V Jupiter

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Message-ID: <20251206134532.1741648-1-javierm@redhat.com>
Date: Sat,  6 Dec 2025 14:44:52 +0100
From: Javier Martinez Canillas <javierm@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: Alex Elder <elder@...cstar.com>,
	Javier Martinez Canillas <javierm@...hat.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Palmer Dabbelt <palmer@...belt.com>,
	Paul Walmsley <pjw@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Yixun Lan <dlan@...too.org>,
	devicetree@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	spacemit@...ts.linux.dev
Subject: [PATCH 0/3] riscv: dts: spacemit: Add PMIC and regulators constraints for Milk-V Jupiter

Hello,

This patch series enables the i2c8 adapter, the PMIC, and voltage regulators
for the Milk-V Jupiter board.

The power management hardware design on the Milk-V Jupiter is identical to the
Banana Pi BPI-F3, so the DT Nodes were copied from the k1-bananapi-f3.dts file.

I have verified the I2C address and regulator constraints against the vendor's
downstream DTS to ensure accuracy. I have also dumped the regulator_summary
debugfs entry to check that the regulators and constraints are registered:

$ cat /sys/kernel/debug/regulator/regulator_summary
 regulator                      use open bypass  opmode voltage current     min     max
---------------------------------------------------------------------------------------
 regulator-dummy                  1    0      0 unknown     0mV     0mA     0mV     0mV
 dc_in_12v                        2    1      0 unknown 12000mV     0mA 12000mV 12000mV
    vcc_4v                        7   10      0 unknown  4000mV     0mA  4000mV  4000mV
       buck1                      1    0      0 unknown  1050mV     0mA   500mV  3425mV
       buck2                      1    0      0 unknown   900mV     0mA   500mV  3425mV
       buck3                      1    0      0 unknown  1800mV     0mA   500mV  1800mV
       buck4                      1    0      0 unknown  3300mV     0mA   500mV  3300mV
       buck5                      3    7      0 unknown  2100mV     0mA   500mV  3425mV
          dldo1                   0    0      0 unknown  1200mV     0mA   500mV  3125mV
          dldo2                   0    0      0 unknown   500mV     0mA   500mV  3125mV
          dldo3                   0    0      0 unknown   500mV     0mA   500mV  3125mV
          dldo4                   1    0      0 unknown  1800mV     0mA   500mV  3125mV
          dldo5                   0    0      0 unknown   500mV     0mA   500mV  3125mV
          dldo6                   1    0      0 unknown  1800mV     0mA   500mV  3125mV
          dldo7                   0    0      0 unknown   500mV     0mA   500mV  3125mV
       buck6                      1    0      0 unknown  1100mV     0mA   500mV  3425mV
       aldo1                      0    0      0 unknown  1800mV     0mA   500mV  3125mV
       aldo2                      0    0      0 unknown   500mV     0mA   500mV  3125mV
       aldo3                      0    0      0 unknown   500mV     0mA   500mV  3125mV
       aldo4                      0    0      0 unknown   500mV     0mA   500mV  3125mV

Best regards,
Javier


Javier Martinez Canillas (3):
  riscv: dts: spacemit: Enable i2c8 adapter for Milk-V Jupiter
  riscv: dts: spacemit: Define fixed regulators for Milk-V Jupiter
  riscv: dts: spacemit: Define the P1 PMIC regulators for Milk-V Jupiter

 .../boot/dts/spacemit/k1-milkv-jupiter.dts    | 135 ++++++++++++++++++
 1 file changed, 135 insertions(+)

-- 
2.52.0

base-commit: bb3a1f127972ea262f98eee55068de1e54ab8d57
branch: milkv-jupiter-pmic