FW_FDMA_CH_CFG_CH_DCB_DB_CNT
[FW_FDMA_CH_CFG_CH_DCB_DB_CNT] = 2,
GENMASK(regs->fsize[FW_FDMA_CH_CFG_CH_DCB_DB_CNT] + 1 - 1, 1)
[FW_FDMA_CH_CFG_CH_DCB_DB_CNT] = 4,