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Message-Id: <20230726075257.12985-8-tudor.ambarus@linaro.org>
Date: Wed, 26 Jul 2023 10:52:53 +0300
From: Tudor Ambarus <tudor.ambarus@...aro.org>
To: tkuw584924@...il.com, takahiro.kuwano@...ineon.com,
michael@...le.cc
Cc: pratyush@...nel.org, linux-mtd@...ts.infradead.org,
linux-kernel@...r.kernel.org, bacem.daassi@...ineon.com,
miquel.raynal@...tlin.com, richard@....at,
Takahiro Kuwano <Takahiro.Kuwano@...ineon.com>
Subject: [PATCH v4 07/11] mtd: spi-nor: spansion: add octal DTR support in RD_ANY_REG_OP
From: Takahiro Kuwano <Takahiro.Kuwano@...ineon.com>
S28HS02GT uses RD_ANY_REG_OP to read status of each die. In Octal DTR
mode, RD_ANY_REG_OP needs dummy cycles (same as params->rdsr_dummy) and
data length should be 2.
Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@...ineon.com>
---
drivers/mtd/spi-nor/spansion.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
index b3a710985f84..d7aa0a90949a 100644
--- a/drivers/mtd/spi-nor/spansion.c
+++ b/drivers/mtd/spi-nor/spansion.c
@@ -102,11 +102,17 @@ static void spansion_nor_clear_sr(struct spi_nor *nor)
static int cypress_nor_sr_ready_and_clear_reg(struct spi_nor *nor, u64 addr)
{
+ struct spi_nor_flash_parameter *params = nor->params;
struct spi_mem_op op =
- CYPRESS_NOR_RD_ANY_REG_OP(nor->params->addr_mode_nbytes, addr,
+ CYPRESS_NOR_RD_ANY_REG_OP(params->addr_mode_nbytes, addr,
0, nor->bouncebuf);
int ret;
+ if (nor->reg_proto == SNOR_PROTO_8_8_8_DTR) {
+ op.dummy.nbytes = params->rdsr_dummy;
+ op.data.nbytes = 2;
+ }
+
ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);
if (ret)
return ret;
--
2.34.1
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