C5: Enable UHCI

[bugadani]

C5 has a slightly different UART selector (single field contains UART ID instead of one bit per UART). PR marks UHCI support as a separate line in the readme.

[bugadani]

/hil esp32c5

[github-actions]

Triggered HIL run for #4967 (chips: esp32c5).

Run: https://github.com/esp-rs/esp-hal/actions/runs/21954484302

Status update: ✅ HIL (per-chip) run succeeded.

[Copilot]

Pull request overview

Enables UHCI support for ESP32-C5 by adding UHCI device metadata (including C5’s combined UART selector field behavior) and updating the HAL/test gating to use a new uhci_driver_supported cfg.

Changes:

• Add UHCI driver metadata + per-chip support status, including a C5-specific combined_uart_selector_field property.
• Extend for_each_uart! metadata to include a numeric UART ID and update UHCI UART-selection logic to use either bitflags or a combined selector field depending on chip cfg.
• Enable the UHCI0 peripheral/clock on ESP32-C5 and adjust HIL UART test gating to the new UHCI driver cfg.

Reviewed changes

Copilot reviewed 24 out of 25 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
hil-test/src/bin/uart.rs	Gates UHCI HIL tests on uhci_driver_supported.
esp-metadata/src/cfg/uart.rs	Adds $id:literal (enumerated index) to for_each_uart! token list + docs.
esp-metadata/src/cfg.rs	Introduces UhciProperties config group and property schema.
esp-metadata/devices/esp32s3.toml	Adds [device.uhci] support status.
esp-metadata/devices/esp32s2.toml	Adds [device.uhci] support status.
esp-metadata/devices/esp32h2.toml	Adds [device.uhci] support status.
esp-metadata/devices/esp32c6.toml	Adds [device.uhci] support status.
esp-metadata/devices/esp32c5.toml	Enables UHCI0 peripheral + clock node; adds [device.uhci] with C5 selector property.
esp-metadata/devices/esp32c3.toml	Adds [device.uhci] support status.
esp-metadata/devices/esp32.toml	Adds [device.uhci] support status.
esp-metadata-generated/src/_generated_esp32s3.rs	Regenerates properties + for_each_uart! signature including $id.
esp-metadata-generated/src/_generated_esp32s2.rs	Regenerates properties + for_each_uart! signature including $id.
esp-metadata-generated/src/_generated_esp32h2.rs	Regenerates properties + for_each_uart! signature including $id.
esp-metadata-generated/src/_generated_esp32c6.rs	Regenerates properties + for_each_uart! signature including $id.
esp-metadata-generated/src/_generated_esp32c5.rs	Adds UHCI peripheral/clock plumbing + properties + updated for_each_uart!.
esp-metadata-generated/src/_generated_esp32c3.rs	Regenerates properties + for_each_uart! signature including $id.
esp-metadata-generated/src/_generated_esp32c2.rs	Regenerates for_each_uart! signature including $id (no UHCI properties).
esp-metadata-generated/src/_generated_esp32.rs	Regenerates properties + for_each_uart! signature including $id.
esp-metadata-generated/src/_build_script_utils.rs	Emits new cfgs (uhci_driver_supported, soc_has_uhci0, uhci_combined_uart_selector_field).
esp-hal/src/uart/uhci.rs	Updates UART selection logic to handle combined selector field via cfg.
esp-hal/src/uart/mod.rs	Moves UHCI module behind unstable_driver! + #[cfg(uhci_driver_supported)]; updates for_each_uart! matcher signature.
esp-hal/src/lib.rs	Re-exports unstable_driver macro for use as crate::unstable_driver!.
esp-hal/src/dma/mod.rs	Adjusts expect(dead_code) cfg for DmaTxFuture::new.
esp-hal/README.md	Updates machine-generated peripheral support table to include UHCI (currently mislabeled).
esp-hal/CHANGELOG.md	Adds PR reference to “C5: Initial UART support” entry.