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Add DCMIPP support to Nucleo N6 #93394

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89cc8a3
boards: nucleo_n657x0_q: add DCMIPP and CSI connector support
josuah Jul 20, 2025
2ea7c71
drivers: video: imx335: incrase T4 delay time
josuah Jul 20, 2025
4ae7e57
shields: st_b_cams_imx_mb1854: introduce csi_gpio1_hogs
josuah Jul 20, 2025
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3 changes: 3 additions & 0 deletions boards/shields/st_b_cams_imx_mb1854/Kconfig.defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -14,4 +14,7 @@ config VIDEO_STM32_DCMIPP_SENSOR_WIDTH
config VIDEO_STM32_DCMIPP_SENSOR_HEIGHT
default 1944

config GPIO_HOGS
default y

endif # VIDEO_STM32_DCMIPP
11 changes: 4 additions & 7 deletions boards/shields/st_b_cams_imx_mb1854/st_b_cams_imx_mb1854.overlay
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Original file line number Diff line number Diff line change
Expand Up @@ -47,11 +47,8 @@
};
};

&csi_connector {
/* Power the camera module */
en-module-gpios {
gpio-hog;
gpios = <CSI_IO1 GPIO_ACTIVE_HIGH>;
output-high;
};
/* Power the camera module */
&csi_gpio1_hog {
status = "okay";
output-high;
};
54 changes: 54 additions & 0 deletions boards/st/nucleo_n657x0_q/nucleo_n657x0_q_common.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
#include <st/n6/stm32n657X0.dtsi>
#include <st/n6/stm32n657x0hxq-pinctrl.dtsi>
#include <zephyr/dt-bindings/flash_controller/xspi.h>
#include <zephyr/dt-bindings/gpio/raspberrypi-csi-connector.h>
#include <zephyr/dt-bindings/input/input-event-codes.h>
#include "arduino_r3_connector.dtsi"

Expand Down Expand Up @@ -54,6 +55,31 @@
led2 = &red_led;
sw0 = &user_button;
};

csi_connector: connector_csi {
compatible = "raspberrypi,csi-connector";
#gpio-cells = <2>;
gpio-map-mask = <0xffffffff 0xffffffc0>;
gpio-map-pass-thru = <0 0x3f>;
gpio-map = <CSI_IO0 0 &gpioo 5 0>,
<CSI_IO1 0 &gpioa 0 0>;
};
};

&gpioo {
csi_gpio0_hog: csi-gpio0-hog {
gpio-hog;
gpios = <5 GPIO_ACTIVE_HIGH>;
status = "disabled";
};
};

&gpioa {
csi_gpio1_hog: csi-gpio1-hog {
gpio-hog;
gpios = <0 GPIO_ACTIVE_HIGH>;
status = "disabled";
};
};

&clk_hse {
Expand Down Expand Up @@ -115,6 +141,12 @@
status = "okay";
};

&ic17 {
pll-src = <1>;
ic-div = <4>;
status = "okay";
};

&perck {
clocks = <&rcc STM32_SRC_HSI PER_SEL(0)>;
status = "okay";
Expand Down Expand Up @@ -160,6 +192,16 @@
status = "okay";
};

csi_i2c: &i2c2 {
clocks = <&rcc STM32_CLOCK(APB1, 22)>,
<&rcc STM32_SRC_CKPER I2C2_SEL(1)>;
pinctrl-0 = <&i2c2_scl_pb10 &i2c2_sda_pb11>;
pinctrl-names = "default";
clock-frequency = <I2C_BITRATE_STANDARD>;
status = "okay";

};

&i2c4 {
clocks = <&rcc STM32_CLOCK(APB4, 7)>,
<&rcc STM32_SRC_CKPER I2C4_SEL(1)>;
Expand Down Expand Up @@ -257,3 +299,15 @@ zephyr_udc0: &usbotg_hs1 {
};
};
};

csi_interface: &dcmipp {
ports {
port@0 {
csi_ep_in: endpoint { };
};

port@1 {
csi_capture_port: endpoint@1 { };
};
};
};
16 changes: 16 additions & 0 deletions boards/st/stm32n6570_dk/stm32n6570_dk_common.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,22 @@
};
};

&gpioc {
csi_gpio0_hog: csi-gpio0-hog {
gpio-hog;
gpios = <8 GPIO_ACTIVE_HIGH>;
status = "disabled";
};
};

&gpiod {
csi_gpio1_hog: csi-gpio1-hog {
gpio-hog;
gpios = <2 GPIO_ACTIVE_HIGH>;
status = "disabled";
};
};

&i2c2 {
status = "okay";
clocks = <&rcc STM32_CLOCK(APB1, 22)>,
Expand Down
1 change: 1 addition & 0 deletions drivers/video/imx335.c
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Original file line number Diff line number Diff line change
Expand Up @@ -466,6 +466,7 @@ static int imx335_init(const struct device *dev)
gpio_pin_set_dt(&cfg->reset_gpio, 0);

k_sleep(K_USEC(600)); /* T4 */
k_sleep(K_USEC(400)); /* Extra delay needed after T4 */
}
#endif

Expand Down