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[60.250.196.139]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-38febffb36dsm1012000a91.7.2026.08.04.01.52.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Aug 2026 01:52:41 -0700 (PDT) From: Zi-Yu Chen To: Andi Shyti , linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Jacky Huang , Shan-Chun Hung , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , Andrew Jeffery , Zi-Yu Chen Subject: [PATCH v8 3/3] arm64: dts: nuvoton: Add I2C nodes for MA35D1 SoC Date: Tue, 4 Aug 2026 16:48:06 +0800 Message-Id: <20260804084806.1846570-4-zychennvt@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260804084806.1846570-1-zychennvt@gmail.com> References: <20260804084806.1846570-1-zychennvt@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add I2C controller nodes to the MA35D1 SoC dtsi file. Also, enable the I2C2 interface on the MA35D1 SOM board and configure its pinctrl to allow communication with the onboard NAU8822 audio codec Signed-off-by: Zi-Yu Chen --- .../boot/dts/nuvoton/ma35d1-som-256m.dts | 20 ++++++ arch/arm64/boot/dts/nuvoton/ma35d1.dtsi | 72 +++++++++++++++++++ 2 files changed, 92 insertions(+) diff --git a/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts b/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts index a029b660e8dc..422468dbc3bf 100644 --- a/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts +++ b/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts @@ -57,6 +57,18 @@ &clk { "integer"; }; +&i2c2 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_i2c2>; + + nau8822: audio-codec@1a { + compatible = "nuvoton,nau8822"; + reg = <0x1a> ; + nuvoton,spk-btl; + }; +}; + &pinctrl { uart-grp { pinctrl_uart0: uart0-pins { @@ -100,6 +112,14 @@ pinctrl_uart16: uart16-pins { power-source = <1>; }; }; + + i2c-grp { + pinctrl_i2c2: i2c2-pins { + nuvoton,pins = <1 8 4>, + <1 9 4>; + bias-disable; + }; + }; }; &uart0 { diff --git a/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi b/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi index 7228ad4735b5..28488889f564 100644 --- a/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi +++ b/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi @@ -372,6 +372,78 @@ uart15: serial@407f0000 { status = "disabled"; }; + i2c0: i2c@40800000 { + compatible = "nuvoton,ma35d1-i2c"; + reg = <0x0 0x40800000 0x0 0x1000>; + interrupts = ; + clocks = <&clk I2C0_GATE>; + clock-frequency = <100000>; + resets = <&sys MA35D1_RESET_I2C0>; + status = "disabled"; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c1: i2c@40810000 { + compatible = "nuvoton,ma35d1-i2c"; + reg = <0x0 0x40810000 0x0 0x1000>; + interrupts = ; + clocks = <&clk I2C1_GATE>; + clock-frequency = <100000>; + resets = <&sys MA35D1_RESET_I2C1>; + status = "disabled"; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c2: i2c@40820000 { + compatible = "nuvoton,ma35d1-i2c"; + reg = <0x0 0x40820000 0x0 0x1000>; + interrupts = ; + clocks = <&clk I2C2_GATE>; + clock-frequency = <100000>; + resets = <&sys MA35D1_RESET_I2C2>; + status = "disabled"; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c3: i2c@40830000 { + compatible = "nuvoton,ma35d1-i2c"; + reg = <0x0 0x40830000 0x0 0x1000>; + interrupts = ; + clocks = <&clk I2C3_GATE>; + clock-frequency = <100000>; + resets = <&sys MA35D1_RESET_I2C3>; + status = "disabled"; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c4: i2c@40840000 { + compatible = "nuvoton,ma35d1-i2c"; + reg = <0x0 0x40840000 0x0 0x1000>; + interrupts = ; + clocks = <&clk I2C4_GATE>; + clock-frequency = <100000>; + resets = <&sys MA35D1_RESET_I2C4>; + status = "disabled"; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c5: i2c@40850000 { + compatible = "nuvoton,ma35d1-i2c"; + reg = <0x0 0x40850000 0x0 0x1000>; + interrupts = ; + clocks = <&clk I2C5_GATE>; + clock-frequency = <100000>; + resets = <&sys MA35D1_RESET_I2C5>; + status = "disabled"; + #address-cells = <1>; + #size-cells = <0>; + }; + uart16: serial@40880000 { compatible = "nuvoton,ma35d1-uart"; reg = <0x0 0x40880000 0x0 0x100>; -- 2.34.1