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Simon Glass 17c5d8d110 arm: dts: rk3399-firefly: Reduce SD card speed for lab

The Firefly-RK3399 board does not boot reliably in the SJG lab due
to signal-integrity issues with SD-wire adapters at higher speeds.

Reduce the SDMMC max-frequency to 25MHz and disable high-speed modes
to improve compatibility.

Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com>
Signed-off-by: Simon Glass <simon.glass@canonical.com>

2025-12-19 21:48:32 -07:00

arc

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arm

arm: dts: rk3399-firefly: Reduce SD card speed for lab

2025-12-19 21:48:32 -07:00

m68k

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microblaze

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mips

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