Commit 012b8276 authored by Angelo Dureghello's avatar Angelo Dureghello Committed by Jonathan Cameron
Browse files

iio: dac: ad3552r-hs: clear reset status flag 



Clear reset status flag, to keep error status register
clean after reset (ad3552r manual, rev B table 38).

Reset error flag was left to 1, so debugging registers, the
"Error Status Register" was dirty (0x01). It is important
to clear this bit, so if there is any reset event over normal
working mode, it is possible to detect it.

Fixes: 0b4d9fe5 ("iio: dac: ad3552r: add high-speed platform driver")
Signed-off-by: default avatarAngelo Dureghello <adureghello@baylibre.com>
Reviewed-by: default avatarDavid Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250108-wip-bl-ad3552r-axi-v0-iio-testing-carlos-v2-2-2dac02f04638@baylibre.com


Cc: <Stable@vger.kernel.org>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 1e758b61

drivers/iio/dac/ad3552r-hs.c

+6 −0
Original line number Diff line number Diff line
@@ -329,6 +329,12 @@ static int ad3552r_hs_setup(struct ad3552r_hs_state *st) 
		dev_info(st->dev, "Chip ID error. Expected 0x%x, Read 0x%x\n",

			 AD3552R_ID, id);



	/* Clear reset error flag, see ad3552r manual, rev B table 38. */

	ret = st->data->bus_reg_write(st->back, AD3552R_REG_ADDR_ERR_STATUS,

				      AD3552R_MASK_RESET_STATUS, 1);

	if (ret)

		return ret;



	ret = st->data->bus_reg_write(st->back,

				      AD3552R_REG_ADDR_SH_REFERENCE_CONFIG,

				      0, 1);