On Mon, Jun 29, 2026 at 11:51:16PM +0800, Eric Chung wrote: >Introduce a controller-specific quirk to select CMD23 (SET_BLOCK_COUNT) >for read/write multi-block operations instead of the legacy CMD18/CMD25 >with open-ended or pre-defined block counts. > >This allows SDHCI host controllers that support CMD23 to improve I/O >efficiency by reducing the number of CMD12 (STOP_TRANSMISSION) commands >for multi-block transfers.
This is a misuse of the quirk mechanism. CMD23 (SET_BLOCK_COUNT) is part of the SD/eMMC specification - it's the standard defined-length multi-block transfer method. Quirks exist for hardware that deviates from spec, not for enabling spec-compliant behavior. Regards Peng
