CSI cameras are controlled using I2C. On AM68 Starter Kit, this is routed to I2C-1, so enable the instance and the TCA9543 I2C switch on the bus. AM68 SK schematics: https://www.ti.com/lit/zip/sprr463 Reviewed-by: Jai Luthra <j-luthra@xxxxxx> Signed-off-by: Vaishnav Achath <vaishnav.a@xxxxxx> --- V1->V2: Update commit message with schematics. .../boot/dts/ti/k3-am68-sk-base-board.dts | 50 +++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts index f48155dd16a3..d743f023cdd9 100644 --- a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts +++ b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts @@ -169,6 +169,13 @@ tfp410_out: endpoint { }; }; }; + + csi_mux: mux-controller { + compatible = "gpio-mux"; + #mux-state-cells = <1>; + mux-gpios = <&exp3 1 GPIO_ACTIVE_HIGH>; + idle-state = <0>; + }; }; &main_pmx0 { @@ -186,6 +193,13 @@ J721S2_IOPAD(0x0e4, PIN_INPUT, 0) /* (AE24) I2C0_SDA */ >; }; + main_i2c1_pins_default: main-i2c1-default-pins { + pinctrl-single,pins = < + J721S2_IOPAD(0x0ac, PIN_INPUT, 13) /* (AC25) MCASP0_AXR15.I2C1_SCL */ + J721S2_IOPAD(0x0b0, PIN_INPUT, 13) /* (AD26) MCASP1_AXR3.I2C1_SDA */ + >; + }; + main_mmc1_pins_default: main-mmc1-default-pins { pinctrl-single,pins = < J721S2_IOPAD(0x104, PIN_INPUT, 0) /* (P23) MMC1_CLK */ @@ -431,6 +445,42 @@ exp1: gpio@21 { }; }; +&main_i2c1 { + pinctrl-names = "default"; + pinctrl-0 = <&main_i2c1_pins_default>; + status = "okay"; + + exp3: gpio@20 { + compatible = "ti,tca6408"; + reg = <0x20>; + gpio-controller; + #gpio-cells = <2>; + gpio-line-names = "CSI_VIO_SEL", "CSI_SEL_FPC_EXPn", + "IO_EXP_CSI2_EXP_RSTz","CSI0_B_GPIO1", + "CSI1_B_GPIO1"; + }; + + i2c-mux@70 { + compatible = "nxp,pca9543"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x70>; + + cam0_i2c: i2c@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + }; + + cam1_i2c: i2c@1 { + #address-cells = <1>; + #size-cells = <0>; + reg = <1>; + }; + + }; +}; + &main_i2c4 { status = "okay"; pinctrl-names = "default"; -- 2.34.1
