diff options
Diffstat (limited to 'drivers/spi/ich.c')
| -rw-r--r-- | drivers/spi/ich.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c index 22fc83dd72..927bbd708f 100644 --- a/drivers/spi/ich.c +++ b/drivers/spi/ich.c @@ -184,6 +184,19 @@ static inline void spi_use_in(struct spi_trans *trans, unsigned bytes) trans->bytesin -= bytes; } +static void spi_lock_down(struct ich_spi_platdata *plat, void *sbase) +{ + if (plat->ich_version == ICHV_7) { + struct ich7_spi_regs *ich7_spi = sbase; + + setbits_le16(&ich7_spi->spis, SPIS_LOCK); + } else if (plat->ich_version == ICHV_9) { + struct ich9_spi_regs *ich9_spi = sbase; + + setbits_le16(&ich9_spi->hsfs, HSFS_FLOCKDN); + } +} + static bool spi_lock_status(struct ich_spi_platdata *plat, void *sbase) { int lock = 0; @@ -592,6 +605,12 @@ static int ich_spi_probe(struct udevice *dev) return ret; } + /* Lock down SPI controller settings if required */ + if (plat->lockdown) { + ich_spi_config_opcode(dev); + spi_lock_down(plat, priv->base); + } + priv->cur_speed = priv->max_speed; return 0; @@ -662,6 +681,9 @@ static int ich_spi_ofdata_to_platdata(struct udevice *dev) plat->ich_version = ICHV_9; } + plat->lockdown = fdtdec_get_bool(gd->fdt_blob, node, + "intel,spi-lock-down"); + return ret; } |