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| author | Simon Glass <sjg@chromium.org> | 2015-07-03 18:28:21 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-07-14 18:03:19 -0600 |
| commit | e1e332c8f2e5cac70566998a0ba0ccfdea437f10 (patch) | |
| tree | 0c3abcb9110ea2a766a6cc455464397834e406d9 /drivers | |
| parent | a452002259e172c93277dbe5752817e0732afe78 (diff) | |
| download | blackbird-obmc-uboot-e1e332c8f2e5cac70566998a0ba0ccfdea437f10.tar.gz blackbird-obmc-uboot-e1e332c8f2e5cac70566998a0ba0ccfdea437f10.zip | |
dm: spi: Correct status register access width
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/ich.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c index 6b6cfbf375..66a5cbaaa1 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); |
