Re: [PATCH 4/6] arm64: dts: freescale: imx8m{m,p}-verdin: Add camera connector nexus

From: Frank Li

Date: Thu Sep 10 2026 - 13:09:07 EST

On Thu, Sep 10, 2026 at 05:38:00PM +0200, Ernest Van Hoecke wrote:
> From: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx>
>
> The Verdin Development Board, Dahlia and Mallow expose the same 24-pin CSI
> camera connector, while Verdin iMX8M Mini and Verdin iMX8M Plus route its
> sideband signals and media pipeline through different SoC resources.
>
> Add a GPIO nexus to each carrier description and stable Verdin-level labels
> for each module's CSI_1 I2C bus, receiver and capture engine. Keeping the
> nexus in the carrier files avoids describing the physical connector on
> carriers which do not provide it.
>
> This gives accessory overlays a stable connector and media interface
> without embedding either module's wiring in the accessory description.
>
> Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx>
> ---

Nice, thank for your efforts.

Frank

> arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi | 17 +++++++++++++++++
> arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi | 17 +++++++++++++++++
> arch/arm64/boot/dts/freescale/imx8mm-verdin-mallow.dtsi | 17 +++++++++++++++++
> arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi | 8 +++++++-
> arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi | 17 +++++++++++++++++
> arch/arm64/boot/dts/freescale/imx8mp-verdin-dev.dtsi | 17 +++++++++++++++++
> arch/arm64/boot/dts/freescale/imx8mp-verdin-mallow.dtsi | 17 +++++++++++++++++
> arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi | 7 ++++++-
> 8 files changed, 115 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi
> index 3d0b14968131..4cf77559e69b 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi
> @@ -4,6 +4,23 @@
> */
>
> / {
> + verdin_camera_connector: camera-connector-0 {
> + compatible = "toradex,camera-connector";
> + #gpio-cells = <2>;
> + /*
> + * CAM_1_CON_RST (pin 11) - Verdin GPIO_5 (SODIMM 216)
> + * CAM_1_CON_PWRDWN (pin 22) - Verdin GPIO_6 (SODIMM 218)
> + * CAM_1_CON_IC_DETECT (pin 23) - Verdin GPIO_7 (SODIMM 220)
> + * CAM_1_CON_PWRCTRL (pin 24) - Verdin GPIO_8 (SODIMM 222)
> + */
> + gpio-map = <0 0 &gpio1 0 GPIO_ACTIVE_HIGH>,
> + <1 0 &gpio1 11 GPIO_ACTIVE_HIGH>,
> + <2 0 &gpio1 8 GPIO_ACTIVE_HIGH>,
> + <3 0 &gpio1 9 GPIO_ACTIVE_HIGH>;
> + gpio-map-mask = <0xffffffff 0x0>;
> + gpio-map-pass-thru = <0x0 0xffffffff>;
> + };
> +
> sound_card: sound-card {
> compatible = "simple-audio-card";
> simple-audio-card,bitclock-master = <&dailink_master>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
> index 1d8d146d9eeb..51a836324c16 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
> @@ -4,6 +4,23 @@
> */
>
> / {
> + verdin_camera_connector: camera-connector-0 {
> + compatible = "toradex,camera-connector";
> + #gpio-cells = <2>;
> + /*
> + * CAM_1_CON_RST (pin 11) - Verdin GPIO_5 (SODIMM 216)
> + * CAM_1_CON_PWRDWN (pin 22) - Verdin GPIO_6 (SODIMM 218)
> + * CAM_1_CON_IC_DETECT (pin 23) - Verdin GPIO_7 (SODIMM 220)
> + * CAM_1_CON_PWRCTRL (pin 24) - Verdin GPIO_8 (SODIMM 222)
> + */
> + gpio-map = <0 0 &gpio1 0 GPIO_ACTIVE_HIGH>,
> + <1 0 &gpio1 11 GPIO_ACTIVE_HIGH>,
> + <2 0 &gpio1 8 GPIO_ACTIVE_HIGH>,
> + <3 0 &gpio1 9 GPIO_ACTIVE_HIGH>;
> + gpio-map-mask = <0xffffffff 0x0>;
> + gpio-map-pass-thru = <0x0 0xffffffff>;
> + };
> +
> sound_card: sound-card {
> compatible = "simple-audio-card";
> simple-audio-card,bitclock-master = <&dailink_master>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-mallow.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin-mallow.dtsi
> index 4a0799d63446..5951cd19a84c 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin-mallow.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-mallow.dtsi
> @@ -11,6 +11,23 @@
> #include <dt-bindings/leds/common.h>
>
> / {
> + verdin_camera_connector: camera-connector-0 {
> + compatible = "toradex,camera-connector";
> + #gpio-cells = <2>;
> + /*
> + * CAM_1_CON_RST (pin 11) - Verdin GPIO_5 (SODIMM 216)
> + * CAM_1_CON_PWRDWN (pin 22) - Verdin GPIO_6 (SODIMM 218)
> + * CAM_1_CON_IC_DETECT (pin 23) - Verdin GPIO_7 (SODIMM 220)
> + * CAM_1_CON_PWRCTRL (pin 24) - Verdin GPIO_8 (SODIMM 222)
> + */
> + gpio-map = <0 0 &gpio1 0 GPIO_ACTIVE_HIGH>,
> + <1 0 &gpio1 11 GPIO_ACTIVE_HIGH>,
> + <2 0 &gpio1 8 GPIO_ACTIVE_HIGH>,
> + <3 0 &gpio1 9 GPIO_ACTIVE_HIGH>;
> + gpio-map-mask = <0xffffffff 0x0>;
> + gpio-map-pass-thru = <0x0 0xffffffff>;
> + };
> +
> leds {
> compatible = "gpio-leds";
> pinctrl-names = "default";
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
> index ac450fc6cbfb..5c72b279d506 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
> @@ -224,6 +224,9 @@ &cpu_crit0 {
> temperature = <105000>;
> };
>
> +/* Verdin CSI_1 */
> +verdin_csi_capture: &csi {};
> +
> &ddrc {
> operating-points-v2 = <&ddrc_opp_table>;
>
> @@ -596,7 +599,7 @@ &i2c2 {
> /* Verdin I2C_3_HDMI N/A */
>
> /* Verdin I2C_4_CSI */
> -&i2c3 {
> +verdin_csi_i2c: &i2c3 {
> clock-frequency = <400000>;
> pinctrl-names = "default", "gpio";
> pinctrl-0 = <&pinctrl_i2c3>;
> @@ -695,6 +698,9 @@ eeprom_carrier_board: eeprom@57 {
> };
> };
>
> +/* Verdin CSI_1 */
> +verdin_csi_rx: &mipi_csi {};
> +
> /* Verdin PCIE_1 */
> &pcie0 {
> assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>,
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi
> index 0e218e6b8e29..164031d5dd86 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi
> @@ -4,6 +4,23 @@
> */
>
> / {
> + verdin_camera_connector: camera-connector-0 {
> + compatible = "toradex,camera-connector";
> + #gpio-cells = <2>;
> + /*
> + * CAM_1_CON_RST (pin 11) - Verdin GPIO_5 (SODIMM 216)
> + * CAM_1_CON_PWRDWN (pin 22) - Verdin GPIO_6 (SODIMM 218)
> + * CAM_1_CON_IC_DETECT (pin 23) - Verdin GPIO_7 (SODIMM 220)
> + * CAM_1_CON_PWRCTRL (pin 24) - Verdin GPIO_8 (SODIMM 222)
> + */
> + gpio-map = <0 0 &gpio1 7 GPIO_ACTIVE_HIGH>,
> + <1 0 &gpio1 8 GPIO_ACTIVE_HIGH>,
> + <2 0 &gpio4 3 GPIO_ACTIVE_HIGH>,
> + <3 0 &gpio4 1 GPIO_ACTIVE_HIGH>;
> + gpio-map-mask = <0xffffffff 0x0>;
> + gpio-map-pass-thru = <0x0 0xffffffff>;
> + };
> +
> native-hdmi-connector {
> compatible = "hdmi-connector";
> label = "X21";
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-dev.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin-dev.dtsi
> index 72a4f846d694..c52e46738110 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-verdin-dev.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-dev.dtsi
> @@ -4,6 +4,23 @@
> */
>
> / {
> + verdin_camera_connector: camera-connector-0 {
> + compatible = "toradex,camera-connector";
> + #gpio-cells = <2>;
> + /*
> + * CAM_1_CON_RST (pin 11) - Verdin GPIO_5 (SODIMM 216)
> + * CAM_1_CON_PWRDWN (pin 22) - Verdin GPIO_6 (SODIMM 218)
> + * CAM_1_CON_IC_DETECT (pin 23) - Verdin GPIO_7 (SODIMM 220)
> + * CAM_1_CON_PWRCTRL (pin 24) - Verdin GPIO_8 (SODIMM 222)
> + */
> + gpio-map = <0 0 &gpio1 7 GPIO_ACTIVE_HIGH>,
> + <1 0 &gpio1 8 GPIO_ACTIVE_HIGH>,
> + <2 0 &gpio4 3 GPIO_ACTIVE_HIGH>,
> + <3 0 &gpio4 1 GPIO_ACTIVE_HIGH>;
> + gpio-map-mask = <0xffffffff 0x0>;
> + gpio-map-pass-thru = <0x0 0xffffffff>;
> + };
> +
> native-hdmi-connector {
> compatible = "hdmi-connector";
> label = "X37";
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-mallow.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mallow.dtsi
> index 846b36706821..b915fbbd04b6 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-verdin-mallow.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mallow.dtsi
> @@ -11,6 +11,23 @@
> #include <dt-bindings/leds/common.h>
>
> / {
> + verdin_camera_connector: camera-connector-0 {
> + compatible = "toradex,camera-connector";
> + #gpio-cells = <2>;
> + /*
> + * CAM_1_CON_RST (pin 11) - Verdin GPIO_5 (SODIMM 216)
> + * CAM_1_CON_PWRDWN (pin 22) - Verdin GPIO_6 (SODIMM 218)
> + * CAM_1_CON_IC_DETECT (pin 23) - Verdin GPIO_7 (SODIMM 220)
> + * CAM_1_CON_PWRCTRL (pin 24) - Verdin GPIO_8 (SODIMM 222)
> + */
> + gpio-map = <0 0 &gpio1 7 GPIO_ACTIVE_HIGH>,
> + <1 0 &gpio1 8 GPIO_ACTIVE_HIGH>,
> + <2 0 &gpio4 3 GPIO_ACTIVE_HIGH>,
> + <3 0 &gpio4 1 GPIO_ACTIVE_HIGH>;
> + gpio-map-mask = <0xffffffff 0x0>;
> + gpio-map-pass-thru = <0x0 0xffffffff>;
> + };
> +
> native-hdmi-connector {
> compatible = "hdmi-connector";
> label = "X14";
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
> index 45a4713c260f..53499289cf61 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
> @@ -719,7 +719,7 @@ atmel_mxt_ts_mezzanine: touch-mezzanine@4a {
> };
>
> /* Verdin I2C_4_CSI */
> -&i2c3 {
> +verdin_csi_i2c: &i2c3 {
> clock-frequency = <400000>;
> pinctrl-names = "default", "gpio";
> pinctrl-0 = <&pinctrl_i2c3>;
> @@ -829,6 +829,11 @@ &i2c5 {
> single-master;
> };
>
> +/* Verdin CSI_1 */
> +verdin_csi_capture: &isi_0 {};
> +
> +verdin_csi_rx: &mipi_csi_0 {};
> +
> /* Verdin PCIE_1 */
> &pcie {
> pinctrl-names = "default";
>
> --
> 2.43.0
>
>