linux-kernel - [PATCH] mtd: nand: raw: atmel: Fix comment in timings preparation

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Message-Id: <20240226122537.75097-1-ada@thorsis.com>
Date: Mon, 26 Feb 2024 13:25:37 +0100
From: Alexander Dahl <ada@...rsis.com>
To: linux-kernel@...r.kernel.org
Cc: Boris Brezillon <bbrezillon@...nel.org>,
	Tudor Ambarus <tudor.ambarus@...aro.org>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Vignesh Raghavendra <vigneshr@...com>,
	Nicolas Ferre <nicolas.ferre@...rochip.com>,
	linux-mtd@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] mtd: nand: raw: atmel: Fix comment in timings preparation

Looks like a copy'n'paste mistake introduced when initially adding the
dynamic timings feature with commit f9ce2eddf176 ("mtd: nand: atmel: Add
->setup_data_interface() hooks").  The context around this and
especially the code itself suggests 'read' is meant instead of write.

Signed-off-by: Alexander Dahl <ada@...rsis.com>
---
 drivers/mtd/nand/raw/atmel/nand-controller.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c
index 4cb478bbee4a..dc75d50d52e8 100644
--- a/drivers/mtd/nand/raw/atmel/nand-controller.c
+++ b/drivers/mtd/nand/raw/atmel/nand-controller.c
@@ -1370,23 +1370,23 @@ static int atmel_smc_nand_prepare_smcconf(struct atmel_nand *nand,
 	 *
 	 * NRD_PULSE = tRP
 	 */
 	ncycles = DIV_ROUND_UP(conf->timings.sdr.tRP_min, mckperiodps);
 	totalcycles += ncycles;
 	ret = atmel_smc_cs_conf_set_pulse(smcconf, ATMEL_SMC_NRD_SHIFT,
 					  ncycles);
 	if (ret)
 		return ret;
 
 	/*
-	 * The write cycle timing is directly matching tWC, but is also
+	 * The read cycle timing is directly matching tRC, but is also
 	 * dependent on the setup and hold timings we calculated earlier,
 	 * which gives:
 	 *
 	 * NRD_CYCLE = max(tRC, NRD_PULSE + NRD_HOLD)
 	 *
 	 * NRD_SETUP is always 0.
 	 */
 	ncycles = DIV_ROUND_UP(conf->timings.sdr.tRC_min, mckperiodps);
 	ncycles = max(totalcycles, ncycles);
 	ret = atmel_smc_cs_conf_set_cycle(smcconf, ATMEL_SMC_NRD_SHIFT,
 					  ncycles);

base-commit: d206a76d7d2726f3b096037f2079ce0bd3ba329b
-- 
2.39.2