Claude review: Re: [PATCH 2/2] drm/bridge: lt9211: Add drive-strength-microamp DT property

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

Patch Review

**Looks good.** The implementation is correct and backward compatible.

**Register value correctness**: The original hardcoded value was `0x48`:
```c
{ 0x823f, 0x48 },
```
The patch changes this to:
```c
{ 0x823f, 0x40 | ctx->lvds_hsdrv_isel },
```
Since `0x48 = 0x40 | 0x08` and the default `lvds_hsdrv_isel = 8`, this correctly preserves the original value when the DT property is absent. The upper nibble (`0x40`) is preserved while bits `[3:0]` carry the drive-strength select. This is correct.

**DT parsing**: The linear search through `lt9211_hsdrv_microamp[]` (16 entries) is fine, and the error path for invalid values is handled correctly with `dev_err` + `-EINVAL`.

Minor points:

1. **`of_property_read_u32` vs `device_property_read_u32`**: The patch uses `of_property_read_u32()`, which is consistent with the rest of this driver (it's heavily OF-dependent with `of_graph_*` calls). Modern kernel convention prefers the firmware-agnostic `device_property_read_u32(dev, ...)`, but consistency with the existing driver is a reasonable choice here.

2. **Lookup table could use `match_string`-style helper**: The kernel has `match_u32_property_value()` or similar patterns, but the explicit loop is perfectly clear for 16 elements. No change needed.

3. **The `const` array becomes runtime-initialized**: `system_lt9211_tx_phy_seq[]` was previously fully compile-time constant (eligible for `.rodata`). With `ctx->lvds_hsdrv_isel`, it's now stack-initialized at each call. This is fine — the same pattern already exists in the array with `ctx->lvds_dual_link` on the line just above:
   ```c
   { 0x823b, 0x38 | (ctx->lvds_dual_link ? BIT(7) : 0) },
   ```
   So this is consistent with the existing code.

4. **Validation redundancy**: The DT schema enum already constrains values, but the driver validates too. This is good practice since not all DTs are schema-validated at runtime.

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Generated by Claude Code Patch Reviewer