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Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/fsl_upm.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c
index 430de6de9ac..d120cd8d726 100644
--- a/drivers/mtd/nand/fsl_upm.c
+++ b/drivers/mtd/nand/fsl_upm.c
@@ -23,6 +23,10 @@
#include <linux/io.h>
#include <asm/fsl_lbc.h>
+#define FSL_UPM_WAIT_RUN_PATTERN 0x1
+#define FSL_UPM_WAIT_WRITE_BYTE 0x2
+#define FSL_UPM_WAIT_WRITE_BUFFER 0x4
+
struct fsl_upm_nand {
struct device *dev;
struct mtd_info mtd;
@@ -41,6 +45,7 @@ struct fsl_upm_nand {
uint32_t mchip_count;
uint32_t mchip_number;
int chip_delay;
+ uint32_t wait_flags;
};
#define to_fsl_upm_nand(mtd) container_of(mtd, struct fsl_upm_nand, mtd)
@@ -96,7 +101,8 @@ static void fun_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
fun->mchip_offsets[fun->mchip_number];
fsl_upm_run_pattern(&fun->upm, chip->IO_ADDR_R, mar);
- fun_wait_rnb(fun);
+ if (fun->wait_flags & FSL_UPM_WAIT_RUN_PATTERN)
+ fun_wait_rnb(fun);
}
static void fun_select_chip(struct mtd_info *mtd, int mchip_nr)
@@ -138,8 +144,11 @@ static void fun_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
for (i = 0; i < len; i++) {
out_8(fun->chip.IO_ADDR_W, buf[i]);
- fun_wait_rnb(fun);
+ if (fun->wait_flags & FSL_UPM_WAIT_WRITE_BYTE)
+ fun_wait_rnb(fun);
}
+ if (fun->wait_flags & FSL_UPM_WAIT_WRITE_BUFFER)
+ fun_wait_rnb(fun);
}
static int __devinit fun_chip_init(struct fsl_upm_nand *fun,
@@ -285,6 +294,13 @@ static int __devinit fun_probe(struct of_device *ofdev,
else
fun->chip_delay = 50;
+ prop = of_get_property(ofdev->node, "fsl,upm-wait-flags", &size);
+ if (prop && size == sizeof(uint32_t))
+ fun->wait_flags = *prop;
+ else
+ fun->wait_flags = FSL_UPM_WAIT_RUN_PATTERN |
+ FSL_UPM_WAIT_WRITE_BYTE;
+
fun->io_base = devm_ioremap_nocache(&ofdev->dev, io_res.start,
io_res.end - io_res.start + 1);
if (!fun->io_base) {