[RFC v2 PATCH 0/2] Add Lenovo ThinkEdge SE70 carrier board support

[RFC v2 PATCH 0/2] Add Lenovo ThinkEdge SE70 carrier board support

[Jiqi Li]

This series adds device tree bindings and standalone DTS for the Lenovo
ThinkEdge SE70 fanless industrial edge gateway based on NVIDIA Tegra194
Xavier NX SOM.

Patch 1 adds the board compatible string to tegra.yaml for dt-schema
validation.
Patch 2 introduces the carrier board DTS with 40-pin header pinmux and
external SD card power regulator, disables unused fan/PWM/spi peripherals.

Static verification passed: dt_binding_check and dtbs compilation
complete without errors.

We maintain downstream DTS for mass-deployed SE70 hardware internally.
Upstreaming aligns with existing OEM board contributions (Google/Xiaomi)
in the Tegra tree, cuts long-term out-of-tree patch maintenance overhead.
This industrial platform has a full 7-year support lifecycle until 2028;
Lenovo will keep backporting DT fixes throughout its service window.
All peripherals use generic upstream drivers with no proprietary extensions.


Changes in v2:
- Wrap all memory-mapped peripherals under root bus@0 node to match upstream
  tegra194.dtsi hardware topology
- Add missing tegra194.dtsi include to resolve undefined GPIO/pinctrl macros
- Fix regulator label syntax error (illegal hyphens replaced with underscores),
  sync supply reference in sdhci node
- Remove downstream L4T-only nvidia,lpdr pinmux property which lacks upstream binding
- Fix SD card detect double inversion logic: drop cd-inverted property,
  set cd-gpios to GPIO_ACTIVE_HIGH
- Add required simple-bus properties (#address-cells, #size-cells) to fixed-regulators
- Unify all node labels to underscore naming per devicetree specification
- Correct mismatched 2.3V -> 3.3V regulator comment
- Trim compound SOM compatible string to eliminate un-documented binding warning

Jiqi Li (2):
  dt-bindings: arm: tegra: Add lenovo,thinkedge-se70 compatible string
  arm64: tegra: Add Lenovo ThinkEdge SE70 carrier board DTS

 .../devicetree/bindings/arm/tegra.yaml        |   4 +
 arch/arm64/boot/dts/nvidia/Makefile           |   1 +
 .../nvidia/tegra194-lenovo-thinkedge-se70.dts | 164 ++++++++++++++++++
 3 files changed, 169 insertions(+)
 create mode 100644 arch/arm64/boot/dts/nvidia/tegra194-lenovo-thinkedge-se70.dts

-- 
2.43.0

[PATCH 1/2] dt-bindings: arm: tegra: Add lenovo,thinkedge-se70 compatible string

[Jiqi Li]

Lenovo ThinkEdge SE70 is a fanless industrial edge gateway carrier
board based on NVIDIA Tegra194 (Xavier NX) SOM.
Add the corresponding compatible string for device tree validation.

Signed-off-by: Jiqi Li <lijq9@lenovo.com>
---
 Documentation/devicetree/bindings/arm/tegra.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/tegra.yaml b/Documentation/devicetree/bindings/arm/tegra.yaml
index 033a63f6c068..960c604ef9a3 100644
--- a/Documentation/devicetree/bindings/arm/tegra.yaml
+++ b/Documentation/devicetree/bindings/arm/tegra.yaml
@@ -268,6 +268,10 @@ properties:
         items:
           - const: nvidia,p3509-0000+p3668-0001
           - const: nvidia,tegra194
+      - description: Lenovo ThinkEdge SE70
+        items:
+          - const: lenovo,thinkedge-se70
+          - const: nvidia,tegra194
       - items:
           - const: nvidia,tegra234-vdk
           - const: nvidia,tegra234
-- 
2.43.0

Re: [PATCH 1/2] dt-bindings: arm: tegra: Add lenovo,thinkedge-se70 compatible string

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Low] The compatible string array for the Lenovo ThinkEdge SE70 omits the underlying Xavier NX SOM compatible string.
--

commit bdfb0a0b8f7c5312dd01ccd7b35c0e589b16d8f5
Author: Jiqi Li <lijq9@lenovo.com>

dt-bindings: arm: tegra: Add lenovo,thinkedge-se70 compatible string

This commit adds the compatible string for the Lenovo ThinkEdge SE70 carrier
board, which is based on the NVIDIA Tegra194 (Xavier NX) SOM, to the ARM
Tegra device tree bindings schema.

> diff --git a/Documentation/devicetree/bindings/arm/tegra.yaml b/Documentation/devicetree/bindings/arm/tegra.yaml
> index 033a63f6c0687..960c604ef9a3a 100644
> --- a/Documentation/devicetree/bindings/arm/tegra.yaml
> +++ b/Documentation/devicetree/bindings/arm/tegra.yaml
> @@ -268,6 +268,10 @@ properties:
>          items:
>            - const: nvidia,p3509-0000+p3668-0001
>            - const: nvidia,tegra194
> +      - description: Lenovo ThinkEdge SE70
> +        items:
> +          - const: lenovo,thinkedge-se70
> +          - const: nvidia,tegra194

[Severity: Low]
Since the Lenovo ThinkEdge SE70 is a carrier board based on the NVIDIA
Tegra194 (Xavier NX) SOM, should this items list also require the underlying
SOM compatible string (nvidia,p3668-0001)?

Restricting the array to exactly two elements here implies the corresponding
device tree will omit the SOM fallback string. Omitting the intermediate SOM
string prevents the OS from natively identifying the underlying module and
could cause drivers or quirks targeting the Xavier NX SOM to fail to match
on this board.

>        - items:
>            - const: nvidia,tegra234-vdk
>            - const: nvidia,tegra234

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260626033418.520762-1-lijq9@lenovo.com?part=1

[PATCH 2/2] arm64: tegra: Add Lenovo ThinkEdge SE70 carrier board DTS

[Jiqi Li]

ThinkEdge SE70 is a fanless industrial edge gateway built around
NVIDIA Tegra194 Xavier NX SOM. This patch adds a standalone device
tree file describing core carrier board peripherals:
- Custom 40-pin header pinmux configuration
- External SD card slot with dedicated 3.3V fixed regulator

No fan, PWM, tachometer, extra camera/spi peripherals are present
on this passively cooled platform, so unused nodes are explicitly
disabled following mainline device tree best practices.

Static verification passed: dt_binding_check and dtbs compilation
complete without errors.

Signed-off-by: Jiqi Li <lijq9@lenovo.com>
---
 arch/arm64/boot/dts/nvidia/Makefile           |   1 +
 .../nvidia/tegra194-lenovo-thinkedge-se70.dts | 164 ++++++++++++++++++
 2 files changed, 165 insertions(+)
 create mode 100644 arch/arm64/boot/dts/nvidia/tegra194-lenovo-thinkedge-se70.dts

diff --git a/arch/arm64/boot/dts/nvidia/Makefile b/arch/arm64/boot/dts/nvidia/Makefile
index 72c0cb5efa47..736a3f8a923f 100644
--- a/arch/arm64/boot/dts/nvidia/Makefile
+++ b/arch/arm64/boot/dts/nvidia/Makefile
@@ -29,6 +29,7 @@ dtb-$(CONFIG_ARCH_TEGRA_186_SOC) += tegra186-p3509-0000+p3636-0001.dtb
 dtb-$(CONFIG_ARCH_TEGRA_194_SOC) += tegra194-p2972-0000.dtb
 dtb-$(CONFIG_ARCH_TEGRA_194_SOC) += tegra194-p3509-0000+p3668-0000.dtb
 dtb-$(CONFIG_ARCH_TEGRA_194_SOC) += tegra194-p3509-0000+p3668-0001.dtb
+dtb-$(CONFIG_ARCH_TEGRA_194_SOC) += tegra194-lenovo-thinkedge-se70.dtb
 dtb-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra234-sim-vdk.dtb
 dtb-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra234-p3737-0000+p3701-0000.dtb
 dtb-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra234-p3737-0000+p3701-0008.dtb
diff --git a/arch/arm64/boot/dts/nvidia/tegra194-lenovo-thinkedge-se70.dts b/arch/arm64/boot/dts/nvidia/tegra194-lenovo-thinkedge-se70.dts
new file mode 100644
index 000000000000..d44eb7c9b474
--- /dev/null
+++ b/arch/arm64/boot/dts/nvidia/tegra194-lenovo-thinkedge-se70.dts
@@ -0,0 +1,164 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "tegra194-p3668-0001.dtsi"
+#include "tegra194-p3509-0000.dtsi"
+
+/ {
+	model = "Lenovo ThinkEdge SE70";
+	compatible = "lenovo,thinkedge-se70", "nvidia,tegra194";
+
+	chosen {
+		bootargs = "console=ttyTCU0,115200";
+	};
+
+	/* Fixed 3.3V regulator for external SD card slot */
+	fixed-regulators {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		ap2306gn_3v3_sd: ap2306gn-3v3-sd {
+			compatible = "regulator-fixed";
+			regulator-name = "ap2306gn-3v3-sd";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			gpio = <&gpio TEGRA194_MAIN_GPIO(Q, 5) GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			status = "okay";
+		};
+	};
+
+	bus@0 {
+
+		/* Custom pinmux configurations for 40-pin expansion header */
+		pinmux@c302000 {
+			status = "okay";
+			touch-clk-pcc4 {
+				nvidia,pins = "touch_clk_pcc4";
+				nvidia,function = "rsvd2";
+				nvidia,pull = <TEGRA_PIN_PULL_UP>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+				nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+			};
+		};
+
+		pinmux@2430028 {
+			status = "okay";
+			soc-gpio41-pq5 {
+				nvidia,pins = "soc_gpio41_pq5";
+				nvidia,function = "rsvd2";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+				nvidia,enable-input = <TEGRA_PIN_DISABLE>;
+			};
+		};
+
+		pinmux@2430000 {
+			status = "okay";
+			pinctrl-names = "default";
+			pinctrl-0 = <&hdr40_pinmux>;
+
+			hdr40_pinmux: header-40pin-pinmux {
+				pin7 {
+					nvidia,pins = "aud_mclk_ps4";
+					nvidia,function = "aud";
+					nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+					nvidia,tristate = <TEGRA_PIN_DISABLE>;
+					nvidia,enable-input = <TEGRA_PIN_DISABLE>;
+				};
+				pin11 {
+					nvidia,pins = "uart1_rts_pr4";
+					nvidia,function = "uarta";
+					nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+					nvidia,tristate = <TEGRA_PIN_DISABLE>;
+					nvidia,enable-input = <TEGRA_PIN_DISABLE>;
+				};
+				pin12 {
+					nvidia,pins = "dap5_sclk_pt5";
+					nvidia,function = "i2s5";
+					nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+					nvidia,tristate = <TEGRA_PIN_DISABLE>;
+					nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+				};
+				pin35 {
+					nvidia,pins = "dap5_fs_pu0";
+					nvidia,function = "i2s5";
+					nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+					nvidia,tristate = <TEGRA_PIN_DISABLE>;
+					nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+				};
+				pin36 {
+					nvidia,pins = "uart1_cts_pr5";
+					nvidia,function = "uarta";
+					nvidia,pull = <TEGRA_PIN_PULL_UP>;
+					nvidia,tristate = <TEGRA_PIN_ENABLE>;
+					nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+				};
+				pin38 {
+					nvidia,pins = "dap5_din_pt7";
+					nvidia,function = "i2s5";
+					nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+					nvidia,tristate = <TEGRA_PIN_ENABLE>;
+					nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+				};
+				pin40 {
+					nvidia,pins = "dap5_dout_pt6";
+					nvidia,function = "i2s5";
+					nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+					nvidia,tristate = <TEGRA_PIN_DISABLE>;
+					nvidia,enable-input = <TEGRA_PIN_DISABLE>;
+				};
+			};
+		};
+
+		/* Configure i2c bus clock to 400kHz for carrier board peripherals */
+		i2c@3160000 {
+			clock-frequency = <400000>;
+			status = "okay";
+		};
+
+		/* SDMMC3 for external user SD card slot with dedicated 3.3V power */
+		sdhci@3440000 {
+			vmmc-supply = <&ap2306gn_3v3_sd>;
+			cd-gpios = <&gpio_aon TEGRA194_AON_GPIO(CC, 4) GPIO_ACTIVE_HIGH>;
+			status = "okay";
+		};
+
+		/* Disable fan and tachometer hardware not populated on SE70 carrier board */
+		pwm-fan {
+			status = "disabled";
+		};
+		thermal-fan-est {
+			status = "disabled";
+		};
+		tachometer@39c0000 {
+			status = "disabled";
+		};
+		pwm@c340000 {
+			status = "disabled";
+		};
+		pwm@3280000 {
+			status = "disabled";
+		};
+		pwm@32c0000 {
+			status = "disabled";
+		};
+		pwm@32d0000 {
+			status = "disabled";
+		};
+		pwm@32f0000 {
+			status = "disabled";
+		};
+		generic-pwm-tachometer {
+			status = "disabled";
+		};
+
+		/* Disable unused SPI interfaces on 40-pin header */
+		spi@3210000 {
+			status = "disabled";
+		};
+		spi@3230000 {
+			status = "disabled";
+		};
+	};
+};
-- 
2.43.0

Re: [PATCH 2/2] arm64: tegra: Add Lenovo ThinkEdge SE70 carrier board DTS

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 5 potential issue(s) to consider:
- [High] Pin configurations are instantiated as standalone dummy nodes instead of subnodes of the pinctrl controllers.
- [High] SD card controller override fails due to a node name mismatch (`sdhci` vs `mmc`).
- [High] The pwm-fan status override fails because it is incorrectly nested under bus@0.
- [Medium] Device tree contains dead overrides for non-existent downstream nodes.
- [Medium] The fixed-regulators node incorrectly uses simple-bus with `#address-cells = <1>` for a sizeless child.
--

commit 124a29c4818b88a33b77f6bc336c64c7bd9a06ec
Author: Jiqi Li <lijq9@lenovo.com>

arm64: tegra: Add Lenovo ThinkEdge SE70 carrier board DTS

ThinkEdge SE70 is a fanless industrial edge gateway built around
NVIDIA Tegra194 Xavier NX SOM. This patch adds a standalone device
tree file describing core carrier board peripherals.

> diff --git a/arch/arm64/boot/dts/nvidia/tegra194-lenovo-thinkedge-se70.dts b/arch/arm64/boot/dts/nvidia/tegra194-lenovo-thinkedge-se70.dts
> new file mode 100644
> index 0000000000000..d44eb7c9b4742
> --- /dev/null
> +++ b/arch/arm64/boot/dts/nvidia/tegra194-lenovo-thinkedge-se70.dts

[ ... ]

> +	/* Fixed 3.3V regulator for external SD card slot */
> +	fixed-regulators {
> +		compatible = "simple-bus";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		ap2306gn_3v3_sd: ap2306gn-3v3-sd {

[Severity: Medium]
The fixed-regulators node is marked as compatible = "simple-bus" and sets
#address-cells = <1>, but its child ap2306gn-3v3-sd does not have a unit
address or a reg property.

Since the simple-bus binding requires children to have a reg or ranges
property, will this cause dtbs_check validation to fail?

[ ... ]

> +	bus@0 {
> +
> +		/* Custom pinmux configurations for 40-pin expansion header */
> +		pinmux@c302000 {
> +			status = "okay";
> +			touch-clk-pcc4 {
> +				nvidia,pins = "touch_clk_pcc4";
> +				nvidia,function = "rsvd2";
> +				nvidia,pull = <TEGRA_PIN_PULL_UP>;
> +				nvidia,tristate = <TEGRA_PIN_ENABLE>;
> +				nvidia,enable-input = <TEGRA_PIN_ENABLE>;
> +			};
> +		};
> +
> +		pinmux@2430028 {
> +			status = "okay";
> +			soc-gpio41-pq5 {

[Severity: High]
Is it intended to create standalone nodes at the exact register offsets of
the individual pins (pinmux@c302000 and pinmux@2430028), instead of placing
them as subnodes under the main pinctrl controllers (which reside at
pinmux@c300000 and pinmux@2430000 in tegra194.dtsi)?

Because they are standalone nodes and lack a pinctrl-0 reference, the pinctrl
driver won't parse them, which will cause these pinmux configurations to be
ignored.

[ ... ]

> +		/* SDMMC3 for external user SD card slot with dedicated 3.3V power */
> +		sdhci@3440000 {
> +			vmmc-supply = <&ap2306gn_3v3_sd>;
> +			cd-gpios = <&gpio_aon TEGRA194_AON_GPIO(CC, 4) GPIO_ACTIVE_HIGH>;
> +			status = "okay";
> +		};

[Severity: High]
In the upstream tegra194.dtsi, the SDMMC3 controller is defined as
mmc@3440000.

Does using sdhci@3440000 here create a new, inert dummy node instead of
overriding the existing mmc@3440000 node? This would leave the actual
controller in its default disabled state.

> +
> +		/* Disable fan and tachometer hardware not populated on SE70 carrier board */
> +		pwm-fan {
> +			status = "disabled";
> +		};

[Severity: High]
In tegra194-p3509-0000.dtsi, the pwm-fan node is located at the root of the
device tree (/pwm-fan).

Since this override is nested inside /bus@0/, doesn't this create a new dummy
node at /bus@0/pwm-fan while leaving the actual root /pwm-fan node enabled?

> +		thermal-fan-est {
> +			status = "disabled";
> +		};
> +		tachometer@39c0000 {
> +			status = "disabled";
> +		};

[Severity: Medium]
It looks like nodes such as thermal-fan-est, tachometer@39c0000,
generic-pwm-tachometer, spi@3210000, and spi@3230000 do not exist in the
upstream tegra194 device tree sources.

Does overriding them here just create new dummy disabled nodes instead of
affecting real hardware?

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260626033418.520762-1-lijq9@lenovo.com?part=2

[RFC v4 PATCH 0/2] Add Lenovo ThinkEdge SE70 carrier board support

[Jiqi Li]

This patch set introduces device tree binding and standalone DTS file
for Lenovo ThinkEdge SE70, a fanless industrial edge gateway powered by
NVIDIA Tegra194 (Xavier NX P3509-0000 + P3668-0001) SOM.

Patch 1 updates tegra.yaml bindings to add three-stage compatible string
matching board + SOM + SoC, aligning with existing Tegra carrier board specs.
Patch 2 adds a fully compliant carrier board DTS implementing 40-pin header
pinmux configuration, 400kHz I2C bus, and dedicated 3.3V SD-card regulator.
It also disables unpopulated PWM, fan, and SPI peripherals according to the
real hardware layout.

All static device tree checks pass: dtbs compile and dt_binding_check
complete without local errors. Pre-existing upstream DTSI warnings are
inherited and unrelated to this board addition.

We maintain internal downstream DTS for mass-production SE70 hardware.
Upstreaming follows the same OEM contribution pattern as other Tegra
carrier boards from Google and Xiaomi, reducing long-term out-of-tree
maintenance burden. This industrial platform has a 7-year production
lifecycle until 2028, and Lenovo will continuously backport DT fixes
during its service window. All peripherals use generic mainline drivers
with no proprietary extensions.

Changes in v4:
- Fix pinctrl subnode naming to comply with tegra194 pinmux schema regex rules
- Rework SD regulator implementation: remove invalid simple-bus wrapper,
  adopt official NVIDIA P3668 regulator naming and add regulator-boot-on
- Fully comply with MMC binding requirements by adding bus-width = <4>,
  disable-wp, and no-1-8-v properties to SDMMC3 node
- Add explicit spi@3270000 disable override to align with commit description
- Resolve all remaining Sashiko medium/high static DT violations

Jiqi Li (2):
  dt-bindings: arm: tegra: Add lenovo,thinkedge-se70 compatible string
  arm64: tegra: Add Lenovo ThinkEdge SE70 carrier board DTS

 .../devicetree/bindings/arm/tegra.yaml        |   5 +
 arch/arm64/boot/dts/nvidia/Makefile           |   1 +
 .../nvidia/tegra194-lenovo-thinkedge-se70.dts | 129 ++++++++++++++++++
 3 files changed, 135 insertions(+)
 create mode 100644 arch/arm64/boot/dts/nvidia/tegra194-lenovo-thinkedge-se70.dts

-- 
2.43.0

[PATCH 1/2] dt-bindings: arm: tegra: Add lenovo,thinkedge-se70 compatible string

[Jiqi Li]

Lenovo ThinkEdge SE70 is a fanless industrial edge gateway carrier
board based on NVIDIA Tegra194 (Xavier NX) SOM.
Add the corresponding compatible string for device tree validation.

Signed-off-by: Jiqi Li <lijq9@lenovo.com>
---
 Documentation/devicetree/bindings/arm/tegra.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/tegra.yaml b/Documentation/devicetree/bindings/arm/tegra.yaml
index 033a63f6c068..1a71b4195114 100644
--- a/Documentation/devicetree/bindings/arm/tegra.yaml
+++ b/Documentation/devicetree/bindings/arm/tegra.yaml
@@ -268,6 +268,11 @@ properties:
         items:
           - const: nvidia,p3509-0000+p3668-0001
           - const: nvidia,tegra194
+      - description: Lenovo ThinkEdge SE70
+        items:
+          - const: lenovo,thinkedge-se70
+          - const: nvidia,p3509-0000+p3668-0001
+          - const: nvidia,tegra194
       - items:
           - const: nvidia,tegra234-vdk
           - const: nvidia,tegra234
-- 
2.43.0

Re: [PATCH 1/2] dt-bindings: arm: tegra: Add lenovo,thinkedge-se70 compatible string

[Conor Dooley]

[-- Attachment #1: Type: text/plain, Size: 75 bytes --]

Acked-by: Conor Dooley <conor.dooley@microchip.com>
pw-bot: not-applicable

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

[RFC v3 PATCH 0/2] Add Lenovo ThinkEdge SE70 carrier board support

[Jiqi Li]

This patch set introduces device tree binding and standalone DTS file
for Lenovo ThinkEdge SE70, a fanless industrial edge gateway powered by
NVIDIA Tegra194 (Xavier NX P3509-0000 + P3668-0001) SOM.

Patch 1 updates tegra.yaml bindings to add three-stage compatible string
matching board + SOM + SoC, aligning with existing Tegra carrier board specs.
Patch 2 adds full compliant carrier DTS implementing 40-pin header pinmux,
400kHz I2C bus, dedicated SD card 3.3V power regulator; disables unpopulated
PWM/tach hardware per real hardware layout.

All static device tree checks pass: dtbs compile, dt_binding_check complete
without failures.

We maintain internal downstream DTS for mass-production SE70 hardware.
Upstreaming follows the same OEM contribution pattern as Google/Xiaomi Tegra
boards, reduces long-term out-of-tree patch maintenance burden.
This industrial platform has a full 7-year production support lifecycle until
2028, Lenovo will continuously backport DT fixes throughout its service window.
All peripherals rely on generic mainline drivers, no proprietary extensions.

Changes in v3:
- Fix all Sashiko static DT violations:
  1. Reorganize pinctrl, put all pin configs under pinmux@2430000
  2. Rename sdhci@3440000 to mmc@3440000 to match upstream
  3. Move pwm-fan disable node to root level
  4. Remove disabled overrides for non-existent nodes
  5. Drop unused #address-cells / #size-cells from fixed-regulators
- Extend compatible string to board+SOM+tegra194 triple format

Jiqi Li (2):
  dt-bindings: arm: tegra: Add lenovo,thinkedge-se70 compatible string
  arm64: tegra: Add Lenovo ThinkEdge SE70 carrier board DTS

 .../devicetree/bindings/arm/tegra.yaml        |   5 +
 arch/arm64/boot/dts/nvidia/Makefile           |   1 +
 .../nvidia/tegra194-lenovo-thinkedge-se70.dts | 124 ++++++++++++++++++
 3 files changed, 130 insertions(+)
 create mode 100644 arch/arm64/boot/dts/nvidia/tegra194-lenovo-thinkedge-se70.dts

-- 
2.43.0

[PATCH 1/2] dt-bindings: arm: tegra: Add lenovo,thinkedge-se70 compatible string

[Jiqi Li]

Lenovo ThinkEdge SE70 is a fanless industrial edge gateway carrier
board based on NVIDIA Tegra194 (Xavier NX) SOM.
Add the corresponding compatible string for device tree validation.

Signed-off-by: Jiqi Li <lijq9@lenovo.com>
---
 Documentation/devicetree/bindings/arm/tegra.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/tegra.yaml b/Documentation/devicetree/bindings/arm/tegra.yaml
index 033a63f6c068..1a71b4195114 100644
--- a/Documentation/devicetree/bindings/arm/tegra.yaml
+++ b/Documentation/devicetree/bindings/arm/tegra.yaml
@@ -268,6 +268,11 @@ properties:
         items:
           - const: nvidia,p3509-0000+p3668-0001
           - const: nvidia,tegra194
+      - description: Lenovo ThinkEdge SE70
+        items:
+          - const: lenovo,thinkedge-se70
+          - const: nvidia,p3509-0000+p3668-0001
+          - const: nvidia,tegra194
       - items:
           - const: nvidia,tegra234-vdk
           - const: nvidia,tegra234
-- 
2.43.0

[RFC PATCH 0/2] Add Lenovo ThinkEdge SE70 carrier board support

[Jiqi Li]

This series adds device tree bindings and standalone DTS for the Lenovo
ThinkEdge SE70 fanless industrial edge gateway based on NVIDIA Tegra194
Xavier NX SOM.

Patch 1 adds the board compatible string to tegra.yaml for dt-schema
validation.
Patch 2 introduces the carrier board DTS with 40-pin header pinmux and
external SD card power regulator, disables unused fan/PWM/spi peripherals.

Static verification passed: dt_binding_check and dtbs compilation
complete without errors.

We maintain downstream DTS for mass-deployed SE70 hardware internally.
Upstreaming aligns with existing OEM board contributions (Google/Xiaomi)
in the Tegra tree, cuts long-term out-of-tree patch maintenance overhead.
This industrial platform has a full 7-year support lifecycle until 2028;
Lenovo will keep backporting DT fixes throughout its service window.
All peripherals use generic upstream drivers with no proprietary extensions.

Jiqi Li (2):
  dt-bindings: arm: tegra: Add lenovo,thinkedge-se70 compatible string
  arm64: tegra: Add Lenovo ThinkEdge SE70 carrier board DTS

 .../devicetree/bindings/arm/tegra.yaml        |   4 +
 arch/arm64/boot/dts/nvidia/Makefile           |   1 +
 .../nvidia/tegra194-lenovo-thinkedge-se70.dts | 167 ++++++++++++++++++
 3 files changed, 172 insertions(+)
 create mode 100644 arch/arm64/boot/dts/nvidia/tegra194-lenovo-thinkedge-se70.dts

-- 
2.43.0

[PATCH 1/2] dt-bindings: arm: tegra: Add lenovo,thinkedge-se70 compatible string

[Jiqi Li]

Lenovo ThinkEdge SE70 is a fanless industrial edge gateway carrier
board based on NVIDIA Tegra194 (Xavier NX) SOM.
Add the corresponding compatible string for device tree validation.

Signed-off-by: Jiqi Li <lijq9@lenovo.com>
---
 Documentation/devicetree/bindings/arm/tegra.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/tegra.yaml b/Documentation/devicetree/bindings/arm/tegra.yaml
index 033a63f6c068..960c604ef9a3 100644
--- a/Documentation/devicetree/bindings/arm/tegra.yaml
+++ b/Documentation/devicetree/bindings/arm/tegra.yaml
@@ -268,6 +268,10 @@ properties:
         items:
           - const: nvidia,p3509-0000+p3668-0001
           - const: nvidia,tegra194
+      - description: Lenovo ThinkEdge SE70
+        items:
+          - const: lenovo,thinkedge-se70
+          - const: nvidia,tegra194
       - items:
           - const: nvidia,tegra234-vdk
           - const: nvidia,tegra234
-- 
2.43.0