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Mon, 13 Apr 2026 00:26:33 -0700 (PDT) From: Iker Pedrosa To: Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Adrian Hunter , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Yixun Lan Cc: Iker Pedrosa , Troy Mitchell , Michael Opdenacker , Javier Martinez Canillas , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, Anand Moon , Trevor Gamblin , Vincent Legoll Subject: [PATCH v7 6/9] riscv: dts: spacemit: k1-orangepi-rv2: add PMIC and power infrastructure Date: Mon, 13 Apr 2026 09:24:48 +0200 Message-ID: <20260413-orangepi-sd-card-uhs-v7-6-16650f49c022@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260413-orangepi-sd-card-uhs-v7-0-16650f49c022@gmail.com> References: <20260413-orangepi-sd-card-uhs-v7-0-16650f49c022@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Mailer: b4 0.14.3 Content-Transfer-Encoding: 8bit Add Spacemit P1 PMIC configuration and board power infrastructure for voltage regulation support. - Add board power regulators (5V input, 4V rail) - Enable I2C8 for PMIC communication - Configure PMIC with buck4 (vmmc) and aldo1 (vqmmc) regulators - Set up regulator constraints for SD card operation Tested-by: Anand Moon Tested-by: Trevor Gamblin Tested-by: Vincent Legoll Signed-off-by: Iker Pedrosa --- arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 48 ++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts index 7b7331cb3c72..9c417a483f6b 100644 --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts @@ -19,6 +19,25 @@ aliases { ethernet1 = ð1; }; + reg_dc_in: dc-in-5v { + compatible = "regulator-fixed"; + regulator-name = "dc_in_5v"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + regulator-boot-on; + regulator-always-on; + }; + + reg_vcc_4v: vcc-4v { + compatible = "regulator-fixed"; + regulator-name = "vcc_4v"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <4000000>; + regulator-boot-on; + regulator-always-on; + vin-supply = <®_dc_in>; + }; + chosen { stdout-path = "serial0"; }; @@ -92,3 +111,32 @@ &uart0 { pinctrl-0 = <&uart0_2_cfg>; status = "okay"; }; + +&i2c8 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c8_cfg>; + status = "okay"; + + pmic@41 { + compatible = "spacemit,p1"; + reg = <0x41>; + interrupts = <64>; + vin-supply = <®_vcc_4v>; + + regulators { + buck4: buck4 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3300000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + aldo1: aldo1 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + regulator-boot-on; + regulator-always-on; + }; + }; + }; +}; -- 2.53.0