This is a note to let you know that I've just added the patch titled
iio: dac: ad3552r: clear reset status flag
to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-linus branch.
The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.
If you have any questions about this process, please let me know.
From e17b9f20da7d2bc1f48878ab2230523b2512d965 Mon Sep 17 00:00:00 2001 From: Angelo Dureghello adureghello@baylibre.com Date: Sat, 25 Jan 2025 17:24:32 +0100 Subject: iio: dac: ad3552r: 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: 8f2b54824b28 ("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-aa3a27f3ff... Cc: <Stable@vger..kernel.org> Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com --- drivers/iio/dac/ad3552r.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/iio/dac/ad3552r.c b/drivers/iio/dac/ad3552r.c index e7206af53af6..7944f5c1d264 100644 --- a/drivers/iio/dac/ad3552r.c +++ b/drivers/iio/dac/ad3552r.c @@ -410,6 +410,12 @@ 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, AD3552R_REG_ADDR_INTERFACE_CONFIG_A, AD3552R_MASK_ADDR_ASCENSION,