On Fri, Feb 27, 2026 at 07:04:34PM +0800, Boon Khai Ng wrote: > Add support for the bits-per-word device tree binding. > > Signed-off-by: Boon Khai Ng <[email protected]> > --- > drivers/spi/designware_spi.c | 16 ++++++++++++++-- > 1 file changed, 14 insertions(+), 2 deletions(-) > > diff --git a/drivers/spi/designware_spi.c b/drivers/spi/designware_spi.c > index b520c727900..c41436a1dfb 100644 > --- a/drivers/spi/designware_spi.c > +++ b/drivers/spi/designware_spi.c > @@ -359,6 +359,7 @@ static int dw_spi_probe(struct udevice *bus) > dw_spi_init_t init = (dw_spi_init_t)dev_get_driver_data(bus); > struct dw_spi_plat *plat = dev_get_plat(bus); > struct dw_spi_priv *priv = dev_get_priv(bus); > + u32 bits_per_word = 8; > int ret; > u32 version; > > @@ -384,8 +385,19 @@ static int dw_spi_probe(struct udevice *bus) > version >> 24, version >> 16, version >> 8, version, > priv->max_xfer); > > - /* Currently only bits_per_word == 8 supported */ > - priv->bits_per_word = 8; > + ret = ofnode_read_u32(dev_ofnode(bus), "bits-per-word", &bits_per_word); > + if (ret) { > + debug("%s no bits-per-word not found\n", __func__); > + } else { > + if (bits_per_word >= 4 && bits_per_word <= priv->max_xfer) { > + debug("%s %d bits-per-word found\n", __func__, > bits_per_word); > + } else { > + printf("ignoring invalid bits-per-word %d\n", > bits_per_word); > + bits_per_word = 8; > + } > + } > + > + priv->bits_per_word = bits_per_word; > > priv->tmode = 0; /* Tx & Rx */ >
I don't see this binding in v7.0-rc1, did I miss it? Thanks. -- Tom
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