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Merge branch 'master' of git://git.denx.de/u-boot-blackfin

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This commit is contained in:
Wolfgang Denk
2009-04-07 21:53:07 +02:00
parent 3ccbfb25f4 aad4eca4ba
commit f75a729b5c
10 changed files with 203 additions and 73 deletions
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1
drivers/mtd/nand/bfin_nand.c
View File

@@ -98,6 +98,7 @@ static void bfin_nfc_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
/* Contents do not matter */
bfin_write_NFC_DATA_RD(0x0000);
SSYNC();
while (!(bfin_read_NFC_IRQSTAT() & RD_RDY))
if (ctrlc())

16
drivers/spi/bfin_spi.c
View File

@@ -52,6 +52,7 @@ void spi_cs_activate(struct spi_slave *slave)
(read_SPI_FLG(bss) &
~((!bss->flg << 8) << slave->cs)) |
(1 << slave->cs));
SSYNC();
debug("%s: SPI_FLG:%x\n", __func__, read_SPI_FLG(bss));
}
@@ -59,7 +60,20 @@ __attribute__((weak))
void spi_cs_deactivate(struct spi_slave *slave)
{
struct bfin_spi_slave *bss = to_bfin_spi_slave(slave);
write_SPI_FLG(bss, read_SPI_FLG(bss) & ~(1 << slave->cs));
u16 flg;
/* make sure we force the cs to deassert rather than let the
* pin float back up. otherwise, exact timings may not be
* met some of the time leading to random behavior (ugh).
*/
flg = read_SPI_FLG(bss) | ((!bss->flg << 8) << slave->cs);
write_SPI_FLG(bss, flg);
SSYNC();
debug("%s: SPI_FLG:%x\n", __func__, read_SPI_FLG(bss));
flg &= ~(1 << slave->cs);
write_SPI_FLG(bss, flg);
SSYNC();
debug("%s: SPI_FLG:%x\n", __func__, read_SPI_FLG(bss));
}