rock-3a: bump uboot to v2026.04-rc4

[EvilOlaf]

Description

• bump to more recent version
• rewrite its patches

How Has This Been Tested?

• build
• boot rock-3a with current kernel from both microsd and eMMC.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

Summary by CodeRabbit

• New Features

  • Added UFS (Ultra Fast Storage) boot support for early bootloader stage.
  • Added Rockchip UFS device reset functionality.
  • Added I2S audio MCLK output clock support for RK3588 platform.

• Chores

  • Updated bootloader version to v2026.04-rc4.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: a54bf2f8-c278-4c99-86cc-331aea465478

📥 Commits

Reviewing files that changed from the base of the PR and between b8eab09 and 666e79b.

📒 Files selected for processing (4)

• config/boards/rock-3a.conf
• patch/u-boot/v2026.04/general-rk3588-add-i2s-mclk-output-to-io-clock-ids.patch
• patch/u-boot/v2026.04/v5-1-4-spl-Make-UFS-available-for-SPL-builds.patch
• patch/u-boot/v2026.04/v5-3-4-ufs-rockchip-Add-device-reset-support.patch

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📝 Walkthrough

Walkthrough

This PR updates the Armbian board configuration to use U-Boot v2026.04-rc4 instead of v2025.10 for Rock-3A, and adds corresponding U-Boot patches including RK3588 clock IDs, SPL UFS boot support, and Rockchip UFS device reset functionality.

Changes

Cohort / File(s)	Summary
Board Configuration Update config/boards/rock-3a.conf	Updated mainline U-Boot source version from tag:v2025.10 to tag:v2026.04-rc4 with corresponding patch directory bump.
RK3588 Clock Bindings patch/u-boot/v2026.04/general-rk3588-add-i2s-mclk-output-to-io-clock-ids.patch	Added four new I2S MCLK output-to-IO clock ID constants (722–725) to RK3588 CRU device tree bindings.
SPL UFS Boot Support patch/u-boot/v2026.04/v5-1-4-spl-Make-UFS-available-for-SPL-builds.patch	Added UFS support for SPL phase including new boot device enum, Kconfig options for SPL UFS configuration, new SPL UFS loader module, and build system integration for drivers.
Rockchip UFS Device Reset patch/u-boot/v2026.04/v5-3-4-ufs-rockchip-Add-device-reset-support.patch	Implemented GPIO-backed device reset support for Rockchip UFS with reset sequence logic and HBA ops integration; updated Kconfig dependencies.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• orangepi5: bump u-boot to v2026.04-rc3 #9450: Modifies board post_family_config functions to bump BOOTBRANCH/BOOTPATCHDIR to the same v2026.04 U-Boot tag across multiple boards.

Suggested reviewers

• catalinii
• amazingfate
• HeyMeco
• efectn
• igorpecovnik

Poem

🐰 Rock-3A hops toward the future bright,
U-Boot v2026.04 in sight!
With UFS speeds and clocks aligned,
Device reset logic intertwined,
SPL bootloaders take their flight!

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The pull request title accurately reflects the main change: updating U-Boot version for rock-3a from v2025.10 to v2026.04-rc4, which is the primary change evident across the file modifications.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[github-actions]

✅ This PR has been reviewed and approved — all set for merge!