The status register on ICH9 is a single byte, so use byte access when writing to it, to avoid updating the control register also.
Signed-off-by: Simon Glass sjg@chromium.org Reviewed-by: Bin Meng bmeng.cn@gmail.com Reviewed-by: Jagan Teki jteki@openedev.com ---
Changes in v3: None Changes in v2: - Continue to use writew for ICH7
drivers/spi/ich.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c index 6b6cfbf..66a5cba 100644 --- a/drivers/spi/ich.c +++ b/drivers/spi/ich.c @@ -411,6 +411,7 @@ static int ich_spi_xfer(struct udevice *dev, unsigned int bitlen, const void *dout, void *din, unsigned long flags) { struct udevice *bus = dev_get_parent(dev); + struct ich_spi_platdata *plat = dev_get_platdata(bus); struct ich_spi_priv *ctlr = dev_get_priv(bus); uint16_t control; int16_t opcode_index; @@ -477,7 +478,10 @@ static int ich_spi_xfer(struct udevice *dev, unsigned int bitlen, if (ret < 0) return ret;
- ich_writew(ctlr, SPIS_CDS | SPIS_FCERR, ctlr->status); + if (plat->ich_version == 7) + ich_writew(ctlr, SPIS_CDS | SPIS_FCERR, ctlr->status); + else + ich_writeb(ctlr, SPIS_CDS | SPIS_FCERR, ctlr->status);
spi_setup_type(trans, using_cmd ? bytes : 0); opcode_index = spi_setup_opcode(ctlr, trans);