ICH 7 SPI controller only supports byte program (02h) for SST flash. Word program (ADh) is not supported.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
--- Split from my v2 patch @ http://patchwork.ozlabs.org/patch/405753/ This needs to be applied after Jagan's new patch series: http://patchwork.ozlabs.org/patch/419154/
drivers/spi/ich.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c index c38df08..0379444 100644 --- a/drivers/spi/ich.c +++ b/drivers/spi/ich.c @@ -141,9 +141,14 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, ich->slave.max_write_size = ctlr.databytes; ich->speed = max_hz;
- /* ICH 7 SPI controller only supports array read command */ - if (ctlr.ich_version == 7) + /* + * ICH 7 SPI controller only supports array read command + * and byte program command for SST flash + */ + if (ctlr.ich_version == 7) { ich->slave.op_mode_rx = SPI_OPM_RX_AS; + ich->slave.op_mode_tx = SPI_OPM_TX_BP; + }
return &ich->slave; }