From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B8C191EDA22 for ; Wed, 12 Feb 2025 09:31:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739352690; cv=none; b=p2jAVdkVYS+VKmxNJhGVkHeORAeQzIb+TkaqaQYRpRrvfL5lv+Il7iK3hcmLESfBgg4znivBp7ifnkaaaQXhSbnS2uqbUN9LzfVMRHh00HJqlRpfd2kUPZyIjHb1tJml9pfgL54sB2BvIiNT4XMCxd20A1zLItXsr/FEKsXXWTQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739352690; c=relaxed/simple; bh=xO8MV+NDtWUfjHcK6pHakutd3MjLZ1yTGZdUxMcCgXI=; h=Subject:To:From:Date:Message-ID:MIME-Version:Content-Type; b=OKiWKRigA0lZp94YbDwmRf7yceiusj0Fnr9i0kmXm4Q/XSHAQvav3Ak5lADwhTjT8XWU9WJ+TwLM0SZjc+C2q6oj6gZ444A3sWftZ3+F5P/kB6kYaibRjJBgdH183vqn9f7t3FgwbQuQ8CldJAVfZ7fpJs7yQ1bEFe6uXIMfkzc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=BNnBQgU2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="BNnBQgU2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D9756C4CEDF; Wed, 12 Feb 2025 09:31:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1739352690; bh=xO8MV+NDtWUfjHcK6pHakutd3MjLZ1yTGZdUxMcCgXI=; h=Subject:To:From:Date:From; b=BNnBQgU2p+4IxihmtkNLrR4kuU1XawEns+Ky6EbdgPxvu5TX5A3VOL8pYGXKehZQ3 ztTPvn5uvVKXbVLym+NOrHvH5jQ8SB1/XM8wmw9d3GJW4XCQHymBTnU1eDoJAoWYlC 43f8w5i7qS2MGl/RK9ejY6d6GIkquTC/Famv6aVQ= Subject: patch "iio: dac: ad3552r: clear reset status flag" added to char-misc-linus To: adureghello@baylibre.com,Jonathan.Cameron@huawei.com,Stable@vger.kernel.org From: Date: Wed, 12 Feb 2025 10:27:04 +0100 Message-ID: <2025021204-script-stark-16b9@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit 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 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 Link: https://patch.msgid.link/20250125-wip-bl-ad3552r-clear-reset-v2-1-aa3a27f3ff8c@baylibre.com Cc: Signed-off-by: Jonathan Cameron --- 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, -- 2.48.1