diff options
| author | Han Xu <han.xu@nxp.com> | 2020-12-09 06:51:03 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2020-12-11 00:37:33 +0300 |
| commit | 46337d158262465a89f3568c94410ea553aa15b9 (patch) | |
| tree | b3b560c44b6ab051c9e922c7170dc94f229bf757 /drivers/mtd | |
| parent | b1209582fb08897ab9da47076d0637ed64e7a4c3 (diff) | |
| download | linux-46337d158262465a89f3568c94410ea553aa15b9.tar.xz | |
mtd: rawnand: gpmi: Fix the driver only sense CS0 R/B issue
Set the GPMI CTRL1 GANGED_RDYBUSY bit so driver can sense the R/B signal
from all CS.
For the NAND chip MT29F64G08AFAAAWP, only the first chip detected
without the patch.
[ 3.764118] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0x68
[ 3.770613] nand: Micron MT29F64G08AFAAAWP
[ 3.774752] nand: 4096 MiB, SLC, erase size: 1024 KiB, page size: 8192, OOB size: 448
[ 3.786421] Bad block table found at page 524160, version 0x01
[ 3.792730] Bad block table found at page 524032, version 0x01
After applying the patch
[ 3.764445] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0x68
[ 3.770941] nand: Micron MT29F64G08AFAAAWP
[ 3.775080] nand: 4096 MiB, SLC, erase size: 1024 KiB, page size: 8192, OOB size: 448
[ 3.784390] nand: 2 chips detected
[ 3.790900] Bad block table found at page 524160, version 0x01
[ 3.796776] Bad block table found at page 1048448, version 0x01
Signed-off-by: Han Xu <han.xu@nxp.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201209035104.22679-2-han.xu@nxp.com
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 6 | ||||
| -rw-r--r-- | drivers/mtd/nand/raw/gpmi-nand/gpmi-regs.h | 1 |
2 files changed, 5 insertions, 2 deletions
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c index 0d30f3fbb045..b06e202cdd0d 100644 --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c @@ -181,9 +181,11 @@ static int gpmi_init(struct gpmi_nand_data *this) /* * Decouple the chip select from dma channel. We use dma0 for all - * the chips. + * the chips, force all NAND RDY_BUSY inputs to be sourced from + * RDY_BUSY0. */ - writel(BM_GPMI_CTRL1_DECOUPLE_CS, r->gpmi_regs + HW_GPMI_CTRL1_SET); + writel(BM_GPMI_CTRL1_DECOUPLE_CS | BM_GPMI_CTRL1_GANGED_RDYBUSY, + r->gpmi_regs + HW_GPMI_CTRL1_SET); err_out: pm_runtime_mark_last_busy(this->dev); diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-regs.h b/drivers/mtd/nand/raw/gpmi-nand/gpmi-regs.h index f5e4f26c34da..fc31fd084dcf 100644 --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-regs.h +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-regs.h @@ -107,6 +107,7 @@ #define BV_GPMI_CTRL1_WRN_DLY_SEL_7_TO_12NS 0x2 #define BV_GPMI_CTRL1_WRN_DLY_SEL_NO_DELAY 0x3 +#define BM_GPMI_CTRL1_GANGED_RDYBUSY (1 << 19) #define BM_GPMI_CTRL1_BCH_MODE (1 << 18) #define BP_GPMI_CTRL1_DLL_ENABLE 17 |