[PATCH v2 0/5] arm64: dts: freescale: imx8mp-toradex-smarc: add fan, ec, gpio

[PATCH v2 0/5] arm64: dts: freescale: imx8mp-toradex-smarc: add fan, ec, gpio

[Francesco Dolcini]

From: Francesco Dolcini <francesco.dolcini@toradex.com>

Add fan, gpio expander and embedded-controller to the Toradex SMARC iMX8MP
device tree file.

All the required DT bindings and drivers are now in next:
 - https://lore.kernel.org/all/20250331072644.17921-1-francesco@dolcini.it/
 - https://lore.kernel.org/all/20250414171455.155155-1-francesco@dolcini.it/
 - https://lore.kernel.org/all/20250402102146.65406-1-francesco@dolcini.it/

Emanuele Ghidoli (2):
  arm64: dts: freescale: imx8mp-toradex-smarc: add embedded controller
  arm64: dts: freescale: imx8mp-toradex-smarc: add gpio expander

Francesco Dolcini (3):
  arm64: dts: freescale: imx8mp-toradex-smarc: add fan PWM configuration
  arm64: dts: freescale: imx8mp-toradex-smarc: use generic gpio node
    name
  arm64: defconfig: Add Toradex Embedded Controller config

 .../freescale/imx8mp-toradex-smarc-dev.dts    |  9 +++++-
 .../dts/freescale/imx8mp-toradex-smarc.dtsi   | 32 ++++++++++++++++++-
 arch/arm64/configs/defconfig                  |  1 +
 3 files changed, 40 insertions(+), 2 deletions(-)

-- 
2.39.5

[PATCH v2 1/5] arm64: dts: freescale: imx8mp-toradex-smarc: add fan PWM configuration

[Francesco Dolcini]

From: Francesco Dolcini <francesco.dolcini@toradex.com>

Configure correctly the FAN pwm output (inverted).

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
---
v2: add r-b peng
---
 .../boot/dts/freescale/imx8mp-toradex-smarc-dev.dts      | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc-dev.dts b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc-dev.dts
index 581f221323b7..55b8c5c14fb4 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc-dev.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc-dev.dts
@@ -3,6 +3,8 @@
 
 /dts-v1/;
 
+#include <dt-bindings/pwm/pwm.h>
+
 #include "imx8mp-toradex-smarc.dtsi"
 
 / {
@@ -205,9 +207,14 @@ &i2c6 {
 	status = "okay";
 
 	/* Fan controller */
-	fan@18 {
+	fan_controller: fan@18 {
 		compatible = "ti,amc6821";
 		reg = <0x18>;
+		#pwm-cells = <2>;
+
+		fan {
+			pwms = <&fan_controller 40000 PWM_POLARITY_INVERTED>;
+		};
 	};
 
 	/* Current measurement into module VDD */
-- 
2.39.5

[PATCH v2 2/5] arm64: dts: freescale: imx8mp-toradex-smarc: add embedded controller

[Francesco Dolcini]

From: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>

Add the embedded controller node to the device tree, this is required
for reset and power-off functionalities.

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
---
v2: add r-b peng
---
 arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi
index 0a8b9eee5ed9..c4ca01ce60d0 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi
@@ -534,6 +534,11 @@ reg_sd_3v3_1v8: LDO5 {
 		};
 	};
 
+	embedded-controller@28 {
+		compatible = "toradex,smarc-imx8mp-ec", "toradex,smarc-ec";
+		reg = <0x28>;
+	};
+
 	rtc_i2c: rtc@32 {
 		compatible = "epson,rx8130";
 		reg = <0x32>;
-- 
2.39.5

[PATCH v2 3/5] arm64: dts: freescale: imx8mp-toradex-smarc: add gpio expander

[Francesco Dolcini]

From: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>

Add gpio expander node to the device tree and the related nodes.

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
---
v2: add r-b peng, use generic gpio node name
---
 .../dts/freescale/imx8mp-toradex-smarc.dtsi   | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi
index c4ca01ce60d0..0cd04c3c96bb 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi
@@ -54,6 +54,13 @@ smarc_key_sleep: key-sleep {
 			wakeup-source;
 			linux,code = <KEY_SLEEP>;
 		};
+
+		smarc_switch_lid: switch-lid {
+			gpios = <&som_ec_gpio_expander 2 GPIO_ACTIVE_LOW>;
+			label = "SMARC_LID#";
+			linux,code = <SW_LID>;
+			linux,input-type = <EV_SW>;
+		};
 	};
 
 	reg_usb0_vbus: regulator-usb0-vbus {
@@ -539,6 +546,24 @@ embedded-controller@28 {
 		reg = <0x28>;
 	};
 
+	som_ec_gpio_expander: gpio@29 {
+		compatible = "toradex,ecgpiol16", "nxp,pcal6416";
+		reg = <0x29>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_mcu_int>;
+		#interrupt-cells = <2>;
+		interrupt-controller;
+		interrupt-parent = <&gpio3>;
+		interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
+		#gpio-cells = <2>;
+		gpio-controller;
+		gpio-line-names =
+			"SMARC_CHARGER_PRSNT#",
+			"SMARC_CHARGING#",
+			"SMARC_LID#",
+			"SMARC_BATLOW#";
+	};
+
 	rtc_i2c: rtc@32 {
 		compatible = "epson,rx8130";
 		reg = <0x32>;
-- 
2.39.5

[PATCH v2 4/5] arm64: dts: freescale: imx8mp-toradex-smarc: use generic gpio node name

[Francesco Dolcini]

From: Francesco Dolcini <francesco.dolcini@toradex.com>

Use generic node name for the SoM GPIO expander, following the
Devicetree Specification generic node names recommendation.

Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
---
v2: new patch
---
 arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi
index 0cd04c3c96bb..22f6daabdb90 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc.dtsi
@@ -434,7 +434,7 @@ &i2c1 {
 	single-master;
 	status = "okay";
 
-	som_gpio_expander: gpio-expander@21 {
+	som_gpio_expander: gpio@21 {
 		compatible = "nxp,pcal6408";
 		reg = <0x21>;
 		pinctrl-names = "default";
-- 
2.39.5

[PATCH v2 5/5] arm64: defconfig: Add Toradex Embedded Controller config

[Francesco Dolcini]

From: Francesco Dolcini <francesco.dolcini@toradex.com>

Enable config for Toradex SMARC Embedded Controller, this is required
for proper reset and power-off functionalities on Toradex SMARC iMX8M
Plus.

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
---
v2: add r-b peng
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index a92c4122a8b9..d4f1230250fa 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -680,6 +680,7 @@ CONFIG_GPIO_SL28CPLD=m
 CONFIG_GPIO_AGGREGATOR=m
 CONFIG_POWER_RESET_MSM=y
 CONFIG_POWER_RESET_QCOM_PON=m
+CONFIG_POWER_RESET_TORADEX_EC=m
 CONFIG_POWER_RESET_XGENE=y
 CONFIG_POWER_RESET_SYSCON=y
 CONFIG_POWER_RESET_SYSCON_POWEROFF=y
-- 
2.39.5

Re: [PATCH v2 0/5] arm64: dts: freescale: imx8mp-toradex-smarc: add fan, ec, gpio

[Shawn Guo]

On Wed, Apr 30, 2025 at 11:41:46AM +0200, Francesco Dolcini wrote:
> Emanuele Ghidoli (2):
>   arm64: dts: freescale: imx8mp-toradex-smarc: add embedded controller
>   arm64: dts: freescale: imx8mp-toradex-smarc: add gpio expander
> 
> Francesco Dolcini (3):
>   arm64: dts: freescale: imx8mp-toradex-smarc: add fan PWM configuration
>   arm64: dts: freescale: imx8mp-toradex-smarc: use generic gpio node
>     name
>   arm64: defconfig: Add Toradex Embedded Controller config

Applied all, thanks!