[PATCH 8/9] mtd: rawnand: brcmnand: BCMA controller uses command shift of 0
flat view
STALE1745d
SUPERSEDED
From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2021-12-23 00:23:01
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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 v1 of 3 in this series.
Revisions (3)
- v1 current
- v2 [diff vs current]
- v3 [diff vs 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 2f2aaa554282..2dfb94c4cc93 100644
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c@@ -908,6 +908,12 @@ 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_soc_has_ops(ctrl->soc)) + return 0; + if (ctrl->nand_version < 0x0602) return 24; return 0;
--
2.25.1