Messages in this thread Patch in this message | | | From | Florian Fainelli <> | Subject | [PATCH v2 8/9] mtd: rawnand: brcmnand: BCMA controller uses command shift of 0 | Date | Thu, 6 Jan 2022 16:13:27 -0800 |
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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
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