Claude review: ARM: tegra: transformers: add connector node

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

**COMMIT MESSAGE:**
Clear and well-written. Explains what hardware is present, why the change is being made (bridge/connector support), and includes excellent testing coverage with Tested-by tags from three different devices.

**TECHNICAL REVIEW:**

The changes are consistent and correct across all three files. Each follows the same pattern:

**Pattern applied in tegra20-asus-transformer-common.dtsi (lines 369-400):**
```diff
-		nvidia,ddc-i2c-bus = <&hdmi_ddc>;
-		nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7)
-			GPIO_ACTIVE_HIGH>;
+		port {
+			hdmi_out: endpoint {
+				remote-endpoint = <&connector_in>;
+			};
+		};
```

And the corresponding connector node:
```diff
+	connector {
+		compatible = "hdmi-connector";
+		type = "d";
+
+		hpd-gpios = <&gpio TEGRA_GPIO(N, 7) GPIO_ACTIVE_HIGH>;
+		ddc-i2c-bus = <&hdmi_ddc>;
+
+		port {
+			connector_in: endpoint {
+				remote-endpoint = <&hdmi_out>;
+			};
+		};
+	};
```

**CORRECTNESS CHECKS:**

1. **Connector type:** `type = "d"` is correct for micro-HDMI (Type D) connectors as stated in the commit message
2. **GPIO polarity:** `GPIO_ACTIVE_HIGH` is preserved from the original binding
3. **DDC bus reference:** `<&hdmi_ddc>` correctly preserved
4. **OF graph connections:** The remote-endpoint references are bidirectional and correct
5. **Node placement:** Connector nodes are correctly placed at the root level (not under any bus)

**CONSISTENCY:**
The exact same transformation is applied to:
- `arch/arm/boot/dts/nvidia/tegra20-asus-transformer-common.dtsi`
- `arch/arm/boot/dts/nvidia/tegra30-asus-tf600t.dts`
- `arch/arm/boot/dts/nvidia/tegra30-asus-transformer-common.dtsi`

All three use the same GPIO (`TEGRA_GPIO(N, 7)`), same connector type (`"d"`), and same reference name (`hdmi_ddc`), which makes sense as these are all ASUS Transformer variant devices.

**POTENTIAL CONCERNS:**

None identified. The mechanical transformation is straightforward and the testing coverage confirms it works on real hardware.

**DEPENDENCIES:**

This patch depends on:
1. Patch 1/2 being accepted (binding must allow the `port` property)
2. The kernel having hdmi-connector driver support (already upstream)
3. The Tegra HDMI driver having bridge/connector support (mentioned in commit message as already done)

**RATING:** Ready for merge (contingent on patch 1/2 being fixed and merged first)

---

**SUMMARY:**
- Patch 1/2: **Needs revision** (fix indentation, improve description)
- Patch 2/2: **Ready** (well-tested, correct implementation)
- Series approach: **Sound** (proper migration to modern connector framework)

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Generated by Claude Code Patch Reviewer