TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

iio: dac: ad3552r: clear reset status flag

Browse Source 
commit e17b9f20da upstream.

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: 8f2b54824b ("drivers:iio:dac: Add AD3552R driver support")
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250125-wip-bl-ad3552r-clear-reset-v2-1-aa3a27f3ff8c@baylibre.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Angelo Dureghello
2025-01-25 17:24:32 +01:00
committed by Greg Kroah-Hartman
parent 82d94af456
commit 12012d4324
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/iio/dac/ad3552r.c
+6
View File
@@ -703,6 +703,12 @@ static int ad3552r_reset(struct ad3552r_desc *dac)
return ret;
}
/* Clear reset error flag, see ad3552r manual, rev B table 38. */
ret = ad3552r_write_reg(dac, AD3552R_REG_ADDR_ERR_STATUS,
AD3552R_MASK_RESET_STATUS);
if (ret)
return ret;
return ad3552r_update_reg_field(dac,
addr_mask_map[AD3552R_ADDR_ASCENSION][0],
addr_mask_map[AD3552R_ADDR_ASCENSION][1],