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Tue, 07 Jul 2026 03:44:32 -0700 (PDT) Received: from wenstp920.tpe.corp.google.com ([2a00:79e0:201d:8:cfca:cfe0:c982:e981]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-ca5af7d5b95sm790980a12.3.2026.07.07.03.44.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jul 2026 03:44:32 -0700 (PDT) From: Chen-Yu Tsai To: Matthias Brugger , AngeloGioacchino Del Regno Cc: Chen-Yu Tsai , linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] arm64: dts: mediatek: mt8188-geralt: Add MT6319 PMIC Date: Tue, 7 Jul 2026 18:44:25 +0800 Message-ID: <20260707104427.3409290-1-wenst@chromium.org> X-Mailer: git-send-email 2.55.0.rc2.803.g1fd1e6609c-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260707_034434_220202_7D92E1E5 X-CRM114-Status: GOOD ( 15.08 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The Geralt design uses a MT6319 PMIC to power the big cores and LPDDR4X DRAM. Add a device node for it and hook up all the supplies. This change requires a firmware fix for the SPMI bus to read back correctly. The required firmware version is 15842.175.0. This is included in ChromeOS releases R150-16700.22.0 (available in Beta channel as of writing or stable channel in mid-July) or R151-16721.0.0 and later. Signed-off-by: Chen-Yu Tsai --- .../boot/dts/mediatek/mt8188-geralt.dtsi | 66 +++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi b/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi index f382f90c48f5..fea52c377d88 100644 --- a/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi @@ -4,6 +4,8 @@ */ /dts-v1/; #include +#include + #include "mt8188.dtsi" #include "mt6359.dtsi" @@ -241,6 +243,14 @@ &cpu5 { cpu-supply = <&mt6359_vcore_buck_reg>; }; +&cpu6 { + cpu-supply = <&mt6319_buck1>; +}; + +&cpu7 { + cpu-supply = <&mt6319_buck1>; +}; + /* * Geralt is the reference design and doesn't have target TDP. * Ciri is (currently) the only device following Geralt, and its @@ -1156,6 +1166,14 @@ pins-bus { }; }; + spmi_pins: spmi-pins { + pins-bus { + pinmux = , + ; + bias-disable; + }; + }; + uart0_pins: uart0-pins { pins-bus { pinmux = , @@ -1267,6 +1285,54 @@ &spi2 { status = "okay"; }; +&spmi { + pinctrl-names = "default"; + pinctrl-0 = <&spmi_pins>; + #address-cells = <2>; + #size-cells = <0>; + status = "okay"; + + pmic@6 { + compatible = "mediatek,mt6319-regulator", "mediatek,mt6315-regulator"; + reg = <0x6 SPMI_USID>; + pvdd1-supply = <&pp4200_s5>; + pvdd2-supply = <&pp4200_s5>; + pvdd3-supply = <&pp4200_s5>; + pvdd4-supply = <&pp4200_s5>; + + regulators { + mt6319_buck1: vbuck1 { + regulator-name = "ppvar_dvdd_proc_bc"; + regulator-min-microvolt = <520000>; + regulator-max-microvolt = <1155000>; + regulator-enable-ramp-delay = <256>; + regulator-allowed-modes = <0 1 2>; + regulator-always-on; + }; + + /* vbuck2 is ganged with vbuck1 */ + + mt6319_buck3: vbuck3 { + regulator-name = "pp1125_emi_vdd2"; + regulator-min-microvolt = <1060000>; + regulator-max-microvolt = <1170000>; + regulator-enable-ramp-delay = <256>; + regulator-allowed-modes = <0 1 2>; + regulator-always-on; + }; + + mt6319_buck4: vbuck4 { + regulator-name = "pp0600_emi_vddq"; + regulator-min-microvolt = <570000>; + regulator-max-microvolt = <650000>; + regulator-enable-ramp-delay = <256>; + regulator-allowed-modes = <0 1 2>; + regulator-always-on; + }; + }; + }; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_pins>; -- 2.55.0.rc2.803.g1fd1e6609c-goog