[PATCH v3 8/9] mtd: rawnand: brcmnand: BCMA controller uses command shift of 0
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STALE1733d
LANDED
From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2022-01-07 18:46:53
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Subsystem:
broadcom stb nand flash driver, memory technology devices (mtd), nand flash subsystem, the rest · Maintainers:
Brian Norris, Kamal Dasu, Miquel Raynal, Richard Weinberger, Vignesh Raghavendra, Linus Torvalds
Revision v3 of 3 in this series; landed in mainline as 5abd37f6e9d6 on 2022-01-23.
Revisions (3)
- v1 [diff vs current]
- v2 [diff vs current]
- v3 current
For some odd and unexplained reason the BCMA NAND controller, albeit revision 3.4 uses a command shift of 0 instead of 24 as it should be, quirk that. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- drivers/mtd/nand/raw/brcmnand/brcmnand.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index eab19df152f3..4759303ece7c 100644
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c@@ -916,6 +916,12 @@ static void brcmnand_wr_corr_thresh(struct brcmnand_host *host, u8 val) static inline int brcmnand_cmd_shift(struct brcmnand_controller *ctrl) { + /* Kludge for the BCMA-based NAND controller which does not actually + * shift the command + */ + if (ctrl->nand_version == 0x0304 && brcmnand_non_mmio_ops(ctrl)) + return 0; + if (ctrl->nand_version < 0x0602) return 24; return 0;
--
2.25.1