From 722a128adaf97fc2ecb64610a482f1399b3f4c2a Mon Sep 17 00:00:00 2001 From: Jayesh Choudhary Date: Wed, 16 Jul 2025 11:31:11 +0530 Subject: [PATCH] arm64: dts: ti: k3-j721s2-common-proc-board: Add main_i2c4 instance Add dt node for main_i2c4 instance along with required pinmuxing. Also add the gpio expander 'exp4' required by display connector. Signed-off-by: Jayesh Choudhary Tested-by: Harikrishna Shenoy Reviewed-by: Harikrishna Shenoy Reviewed-by: Udit Kumar Link: https://lore.kernel.org/r/20250716060114.52122-5-j-choudhary@ti.com Signed-off-by: Nishanth Menon --- .../dts/ti/k3-j721s2-common-proc-board.dts | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts index e2fc1288ed076..793d50344fade 100644 --- a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts +++ b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts @@ -148,6 +148,13 @@ >; }; + main_i2c4_pins_default: main-i2c4-default-pins { + pinctrl-single,pins = < + J721S2_IOPAD(0x014, PIN_INPUT_PULLUP, 8) /* (AD25) I2C4_SCL */ + J721S2_IOPAD(0x010, PIN_INPUT_PULLUP, 8) /* (AF28) I2C4_SDA */ + >; + }; + main_i2c5_pins_default: main-i2c5-default-pins { pinctrl-single,pins = < J721S2_IOPAD(0x01c, PIN_INPUT, 8) /* (Y24) MCAN15_TX.I2C5_SCL */ @@ -370,6 +377,23 @@ }; }; +&main_i2c4 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&main_i2c4_pins_default>; + clock-frequency = <400000>; + + exp4: gpio@20 { + compatible = "ti,tca6408"; + reg = <0x20>; + gpio-controller; + #gpio-cells = <2>; + gpio-line-names = "DP0_PWR_SW_EN", "DP1_PWR_SW_EN", "UB981_PDB", + "UB981_GPIO0", "UB981_GPIO1", "UB981_GPIO2", + "UB981_GPIO3", "PWR_SW_CNTL_DSI0#"; + }; +}; + &main_i2c5 { pinctrl-names = "default"; pinctrl-0 = <&main_i2c5_pins_default>; -- 2.47.3