linux-kernel - [PATCH v4 1/3] mtd: spi-nor: Extend SFDP 4byte address instruction lookup table with new octal modes as per JEDEC JESD216F

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Date:   Fri,  2 Dec 2022 08:55:37 -0500
From:   Nathan Barrett-Morrison <nathan.morrison@...esys.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     nathan.morrison@...esys.com, greg.malysa@...esys.com,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Pratyush Yadav <pratyush@...nel.org>,
        Michael Walle <michael@...le.cc>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd@...ts.infradead.org (open list:SPI NOR SUBSYSTEM),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v4 1/3] mtd: spi-nor: Extend SFDP 4byte address instruction lookup table with new octal modes as per JEDEC JESD216F

This adds the new bit fields for
reading: 1S-1S-8S, 1S-8S-8S, 1D-8D-8D
programming: 1S-1S-8S, 1S-8S-8S

Signed-off-by: Nathan Barrett-Morrison <nathan.morrison@...esys.com>
---
 drivers/mtd/spi-nor/sfdp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mtd/spi-nor/sfdp.c b/drivers/mtd/spi-nor/sfdp.c
index 2257f1b4c2e2..e4e87815ba94 100644
--- a/drivers/mtd/spi-nor/sfdp.c
+++ b/drivers/mtd/spi-nor/sfdp.c
@@ -953,11 +953,16 @@ static int spi_nor_parse_4bait(struct spi_nor *nor,
 		{ SNOR_HWCAPS_READ_1_1_1_DTR,	BIT(13) },
 		{ SNOR_HWCAPS_READ_1_2_2_DTR,	BIT(14) },
 		{ SNOR_HWCAPS_READ_1_4_4_DTR,	BIT(15) },
+		{ SNOR_HWCAPS_READ_1_1_8,       BIT(20) },
+		{ SNOR_HWCAPS_READ_1_8_8,       BIT(21) },
+		{ SNOR_HWCAPS_READ_1_8_8_DTR,   BIT(22) },
 	};
 	static const struct sfdp_4bait programs[] = {
 		{ SNOR_HWCAPS_PP,		BIT(6) },
 		{ SNOR_HWCAPS_PP_1_1_4,		BIT(7) },
 		{ SNOR_HWCAPS_PP_1_4_4,		BIT(8) },
+		{ SNOR_HWCAPS_PP_1_1_8,         BIT(23) },
+		{ SNOR_HWCAPS_PP_1_8_8,         BIT(24) },
 	};
 	static const struct sfdp_4bait erases[SNOR_ERASE_TYPE_MAX] = {
 		{ 0u /* not used */,		BIT(9) },
-- 
2.30.2