diff options
| author | Huang Shijie <b32955@freescale.com> | 2013-08-27 11:29:07 +0200 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2013-11-07 08:33:03 +0100 |
| commit | 7caa4fd29068cccaa7be20914af6d23f261be3eb (patch) | |
| tree | 6b833619fef7e078e2be550806466fac211dfbce /drivers/mtd | |
| parent | mtd: gpmi: scan two nand chips (diff) | |
| download | linux-7caa4fd29068cccaa7be20914af6d23f261be3eb.tar.xz linux-7caa4fd29068cccaa7be20914af6d23f261be3eb.zip | |
mtd: gpmi: imx6: fix the wrong method for checking ready/busy
In the imx6, all the ready/busy pins are binding togeter.
So we should always check the ready/busy pin of the chip 0.
In the other word, when the CS1 is enabled, we should also check the
ready/busy of chip 0; if we check the ready/busy of chip 1,
we will get the wrong result.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/gpmi-nand/gpmi-lib.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c index 7d56d87599c0..aaced29727fb 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c @@ -1079,6 +1079,13 @@ int gpmi_is_ready(struct gpmi_nand_data *this, unsigned chip) mask = MX23_BM_GPMI_DEBUG_READY0 << chip; reg = readl(r->gpmi_regs + HW_GPMI_DEBUG); } else if (GPMI_IS_MX28(this) || GPMI_IS_MX6Q(this)) { + /* + * In the imx6, all the ready/busy pins are bound + * together. So we only need to check chip 0. + */ + if (GPMI_IS_MX6Q(this)) + chip = 0; + /* MX28 shares the same R/B register as MX6Q. */ mask = MX28_BF_GPMI_STAT_READY_BUSY(1 << chip); reg = readl(r->gpmi_regs + HW_GPMI_STAT); |