Unverified Commit eff96043 authored by Takahiro Kuwano's avatar Takahiro Kuwano Committed by Tudor Ambarus
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mtd: spi-nor: spansion: add octal DTR support in RD_ANY_REG_OP 



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: default avatarTakahiro Kuwano <Takahiro.Kuwano@infineon.com>
Link: https://lore.kernel.org/r/20230726075257.12985-8-tudor.ambarus@linaro.org


Signed-off-by: default avatarTudor Ambarus <tudor.ambarus@linaro.org>
parent 7d896a94

drivers/mtd/spi-nor/spansion.c

+7 −1
Original line number Diff line number Diff line
@@ -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;