@@ -322,6 +322,14 @@ tfp410_out: endpoint {
};
};
};
+
+ csi_mux: mux-controller {
+ compatible = "gpio-mux";
+ #mux-state-cells = <1>;
+ mux-gpios = <&exp2 1 GPIO_ACTIVE_HIGH>;
+ idle-state = <0>;
+ };
+
};
&main_pmx0 {
@@ -341,6 +349,13 @@ J784S4_IOPAD(0x0e4, PIN_INPUT_PULLUP, 0) /* (AP37) I2C0_SDA */
>;
};
+ main_i2c1_pins_default: main-i2c1-default-pins {
+ pinctrl-single,pins = <
+ J784S4_IOPAD(0x0ac, PIN_INPUT_PULLUP, 13) /* (AE34) MCASP0_AXR15.I2C1_SCL */
+ J784S4_IOPAD(0x0b0, PIN_INPUT_PULLUP, 13) /* (AL33) MCASP1_AXR3.I2C1_SDA */
+ >;
+ };
+
main_mmc1_pins_default: main-mmc1-default-pins {
bootph-all;
pinctrl-single,pins = <
@@ -775,6 +790,42 @@ exp1: gpio@21 {
};
};
+&main_i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_i2c1_pins_default>;
+ clock-frequency = <400000>;
+ status = "okay";
+
+ exp2: gpio@21 {
+ compatible = "ti,tca6408";
+ reg = <0x21>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-line-names = "CSI_VIO_SEL", "CSI_MUX_SEL_2", "CSI2_RSTz",
+ "IO_EXP_CAM0_GPIO1", "IO_EXP_CAM1_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_sdhci0 {
bootph-all;
/* eMMC */
CSI cameras are controlled using I2C. On AM69 Starter Kit, this is routed to I2C-1, so enable the instance, TCA9543 I2C switch and the TCA6408 GPIO expander on the bus. AM69 SK has the CSI2RX routed to a MIPI CSI connector and to 22-pin RPi camera connector through an analog mux with GPIO control, model that so that an overlay can control the mux state according to connected cameras. AM69 SK schematics: https://www.ti.com/lit/zip/sprr466 Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com> --- V1->V2: Update commit message with schematics. arch/arm64/boot/dts/ti/k3-am69-sk.dts | 51 +++++++++++++++++++++++++++ 1 file changed, 51 insertions(+)