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Fri, 10 Jan 2025 03:10:56 -0800 (PST) From: Alexandre Mergnat Date: Fri, 10 Jan 2025 12:10:46 +0100 Subject: [PATCH] arm64: dts: mediatek: add mmc2 support for mt8365-evk 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" Content-Transfer-Encoding: 7bit Message-Id: <20250109-mmc2-support-v1-1-9b9d1b1ae35d@baylibre.com> X-B4-Tracking: v=1; b=H4sIADYAgWcC/x2N0QrCMAwAf2Xk2UBbWXH+ivjQ1swFtq4kToSxf zfs8Q6O20FJmBTu3Q5CX1Zeq4G/dFCmVN+E/DKG4ELvvBtwWUpA3Vpb5YNDzFdKvY/+FsGSnJQ wS6plsqhu82yyCY38Ox+P53H8AY2Xdz9zAAAA To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , macpaul.Lin@mediatek.com Cc: vsatoes@baylibre.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Alexandre Mergnat X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=3770; 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fpr=231B5ED7F3EAAA700E60FE8B2B46499D7E31D445 Adds support for the MMC2 interface on the MT8365 EVK board. It introduces a fixed regulator for the MMC2 VDD33 supply and configures the MMC2 node with a 4-bit bus width, high-speed capabilities, UHS modes, and appropriate power supplies. Enabled SDIO IRQ, wakeup source, and kept power during suspend for wireless chip functionality. Signed-off-by: Alexandre Mergnat --- arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 85 +++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts index 7d90112a7e27..309dc76322d4 100644 --- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts +++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts @@ -53,6 +53,15 @@ memory@40000000 { reg = <0 0x40000000 0 0xc0000000>; }; + mmc2_vdd33: mmc2_vdd33-regulator { + compatible = "regulator-fixed"; + regulator-name = "mmc2_vdd33"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpio = <&pio 121 0>; + enable-active-high; + }; + usb_otg_vbus: regulator-0 { compatible = "regulator-fixed"; regulator-name = "otg_vbus"; @@ -197,6 +206,28 @@ &mmc1 { status = "okay"; }; +&mmc2 { + assigned-clock-parents = <&topckgen CLK_TOP_MSDCPLL>; + assigned-clocks = <&topckgen CLK_TOP_MSDC50_2_SEL>; + bus-width = <4>; + cap-sd-highspeed; + cap-sdio-irq; + hs400-ds-delay = <0x12012>; + keep-power-in-suspend; + max-frequency = <200000000>; + non-removable; + pinctrl-0 = <&mmc2_default_pins>; + pinctrl-1 = <&mmc2_uhs_pins>; + pinctrl-names = "default", "state_uhs"; + sd-uhs-sdr104; + sd-uhs-sdr25; + sd-uhs-sdr50; + vmmc-supply = <&mmc2_vdd33>; + vqmmc-supply = <&mt6357_vcn18_reg>; + wakeup-source; + status = "okay"; +}; + &mt6357_pmic { interrupts-extended = <&pio 145 IRQ_TYPE_LEVEL_HIGH>; interrupt-controller; @@ -410,6 +441,60 @@ cmd-dat-pins { }; }; + mmc2_default_pins: mmc2-default-pins { + clk-pins { + pinmux = ; + drive-strength = <4>; + bias-pull-down = ; + }; + + cmd-dat-pins { + pinmux = , + , + , + , + ; + input-enable; + drive-strength = <4>; + bias-pull-up = ; + }; + + sys-en-pins { + pinmux = ; + output-low; + }; + }; + + mmc2_uhs_pins: mmc2-uhs-pins { + clk-pins { + pinmux = ; + drive-strength = <8>; + bias-pull-down = ; + }; + + cmd-dat-pins { + pinmux = , + , + , + , + ; + input-enable; + drive-strength = <8>; + bias-pull-up = ; + }; + + ds-pins { + pinmux = ; + drive-strength = <8>; + bias-pull-down = ; + }; + + sys-en-pins { + pinmux = ; + output-high; + }; + }; + uart0_pins: uart0-pins { pins { pinmux = , --- base-commit: 9d89551994a430b50c4fffcb1e617a057fa76e20 change-id: 20250109-mmc2-support-96b3ea516186 Best regards, -- Alexandre Mergnat