On Tue, Oct 20, 2020 at 01:12:08PM +0200, Uwe Kleine-König wrote: > According to the data sheet (MC34704 Rev. 8.0, 12/2014) must always have > the MSB set in the "Sub-address" byte for reads. > > This fixes reading out registers on a MC34704AEP chip. > > Fixes: 514387711f2d ("i2c: add driver for the MC34704 PMIC") > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> > --- > drivers/mfd/mc34704.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) Applied, thanks Sascha > > diff --git a/drivers/mfd/mc34704.c b/drivers/mfd/mc34704.c > index 4aa02b74ff20..29071c5ccfce 100644 > --- a/drivers/mfd/mc34704.c > +++ b/drivers/mfd/mc34704.c > @@ -43,7 +43,7 @@ int mc34704_reg_read(struct mc34704 *mc34704, u8 reg, u8 *val) > { > int ret; > > - ret = i2c_read_reg(mc34704->client, reg, val, 1); > + ret = i2c_read_reg(mc34704->client, 1 << 7 | reg, val, 1); > > return ret == 1 ? 0 : ret; > } > @@ -112,7 +112,7 @@ static int mc34704_probe(struct device_d *dev) > mc34704_dev = xzalloc(sizeof(struct mc34704)); > mc34704_dev->cdev.name = DRIVERNAME; > mc34704_dev->client = to_i2c_client(dev); > - mc34704_dev->cdev.size = 256; > + mc34704_dev->cdev.size = 128; > mc34704_dev->cdev.dev = dev; > mc34704_dev->cdev.ops = &mc34704_fops; > > -- > 2.28.0 > > > _______________________________________________ > barebox mailing list > barebox@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/barebox -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox