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mtd: rawnand: davinci: Reduce polling interval in NAND_OP_WAITRDY_INSTR

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For each NAND_OP_WAITRDY_INSTR operation, the NANDFSR register is
polled only once every 100 us to check for the EMA_WAIT pin. This
isn't frequent enough and causes delays in NAND accesses.

Set the polling interval to 5 us. It increases the page read speed
reported by flash_speed by ~30% (~10% on page writes).

Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Bastien Curutchet 2025-01-03 09:13:49 +01:00 committed by Miquel Raynal
parent b937186679
commit 6df2d9553e
1 changed files with 1 additions and 1 deletions
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2
drivers/mtd/nand/raw/davinci_nand.c
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@ -736,7 +736,7 @@ static int davinci_nand_exec_instr(struct davinci_nand_info *info,
case NAND_OP_WAITRDY_INSTR:
timeout_us = instr->ctx.waitrdy.timeout_ms * 1000;
ret = readl_relaxed_poll_timeout(info->base + NANDFSR_OFFSET,
status, status & BIT(0), 100,
status, status & BIT(0), 5,
timeout_us);
if (ret)
return ret;