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Mon, 13 Apr 2026 00:27:00 -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, Trevor Gamblin Subject: [PATCH v7 9/9] riscv: dts: spacemit: k1-musepi-pro: add SD card support with UHS modes Date: Mon, 13 Apr 2026 09:24:51 +0200 Message-ID: <20260413-orangepi-sd-card-uhs-v7-9-16650f49c022@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: linux-kernel@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 From: Trevor Gamblin Update the Muse Pi Pro devicetree with SD card support to match what was done for the OrangePi RV2 in [1]. More precisely: - Enable sdhci0 controller with 4-bit bus width - Configure card detect GPIO with inversion - Connect vmmc-supply to buck4 for 3.3V card power - Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching - Add dual pinctrl states for voltage-dependent pin configuration - Support UHS-I SDR25, SDR50, and SDR104 modes [1] https://lore.kernel.org/linux-riscv/20260316-orangepi-sd-card-uhs-v3-0-aefd3b7832df@gmail.com/T/# Signed-off-by: Trevor Gamblin Signed-off-by: Iker Pedrosa --- arch/riscv/boot/dts/spacemit/k1-musepi-pro.dts | 66 ++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-musepi-pro.dts b/arch/riscv/boot/dts/spacemit/k1-musepi-pro.dts index 29e333b670cf..774a4640f065 100644 --- a/arch/riscv/boot/dts/spacemit/k1-musepi-pro.dts +++ b/arch/riscv/boot/dts/spacemit/k1-musepi-pro.dts @@ -18,6 +18,24 @@ aliases { ethernet0 = ð0; serial0 = &uart0; }; + 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; + }; + chosen { stdout-path = "serial0"; @@ -77,3 +95,51 @@ &uart0 { pinctrl-names = "default"; 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; + }; + }; + }; +}; + +&sdhci0 { + pinctrl-names = "default", "uhs"; + pinctrl-0 = <&mmc1_cfg>; + pinctrl-1 = <&mmc1_uhs_cfg>; + bus-width = <4>; + cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>; + cd-inverted; + no-mmc; + no-sdio; + disable-wp; + cap-sd-highspeed; + vmmc-supply = <&buck4>; + vqmmc-supply = <&aldo1>; + sd-uhs-sdr25; + sd-uhs-sdr50; + sd-uhs-sdr104; + status = "okay"; +}; -- 2.53.0