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 CD712215F49; Wed, 4 Dec 2024 23:35:48 +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=1733355348; cv=none; b=awY8juF/uu90Q5A3u8y1Io73ArSpvCIjTmFuQ6pvhvy6KBTMXxLPBw9+74WG2HJNKWte/h8D43xcPpN6KdWp3iqDjvg6nyjFmghGNb8QLJMdF4f3sNf1i94DSSnv3qtJR+Uit/60yQZplA0jbW9gpTH8M7yCORxl8l7PCisvLG8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733355348; c=relaxed/simple; bh=334qt/j7qYLk4mEYTYpVdCFHGSuiH7C3EuTPiPIgl6I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=XdtGeCYgue9dMWZsuAB1wBW5YGiRVexyKaj7QJoHmIkll0kpV6OgLxhdn+oqnD/1VNWgbvgbx9UkpJVHgWpn6ENgoURPR30CXa4qGgS2Lx6rB6BMR5NyV5tVkbbzCVWl0WrVVldHD+rTmMvZ+Epj2ZJY/JBu+Qyxv1zElJXGftU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=r5MkavW1; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="r5MkavW1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B75AC4CED6; Wed, 4 Dec 2024 23:35:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733355348; bh=334qt/j7qYLk4mEYTYpVdCFHGSuiH7C3EuTPiPIgl6I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=r5MkavW18GD5ueA1W1L97iCVNKR0QDyCB5yMmRKZlEZY6B94jaymkHsT55HJn3plO 5gbR+/56VsHcd2hGOMhSqNWAWj0+PQo/aqyiuE5cMQfLgjXKgEwiIgwr5dS7Kb2pkX V6BHauqFuNbtfP/FAsYZECvS8Lt2V49w4QrkpFnINS7B5Rase0DhtUaLoKY/1yVlGy iZRa3SUf+M06xnc34gHzpISZ+EReEkJ6P6VF+5VnxkY9XcPZWg48Y1rzUjqta0JJ5+ G8tTbkShRYFNewHsu0OVAmkz9PiB4/3XP+0wMz+cizGbaK4YBozjLjQ7dxkMIrJETz vi7/L51SafQ3Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Inochi Amaoto , Andy Shevchenko , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Greg Kroah-Hartman , Sasha Levin , jirislaby@kernel.org, unicorn_wang@outlook.com, inochiama@outlook.com, linux-serial@vger.kernel.org Subject: [PATCH AUTOSEL 6.6 3/6] serial: 8250_dw: Add Sophgo SG2044 quirk Date: Wed, 4 Dec 2024 17:24:12 -0500 Message-ID: <20241204222425.2250046-3-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241204222425.2250046-1-sashal@kernel.org> References: <20241204222425.2250046-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6.63 Content-Transfer-Encoding: 8bit From: Inochi Amaoto [ Upstream commit cad4dda82c7eedcfc22597267e710ccbcf39d572 ] SG2044 relys on an internal divisor when calculating bitrate, which means a wrong clock for the most common bitrates. So add a quirk for this uart device to skip the set rate call and only relys on the internal UART divisor. Reviewed-by: Andy Shevchenko Reviewed-by: Ilpo Järvinen Signed-off-by: Inochi Amaoto Link: https://lore.kernel.org/r/20241024062105.782330-4-inochiama@gmail.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/serial/8250/8250_dw.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 8aed33be2ebf4..eaf4a907380aa 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -785,7 +785,7 @@ static const struct dw8250_platform_data dw8250_renesas_rzn1_data = { .quirks = DW_UART_QUIRK_CPR_VALUE | DW_UART_QUIRK_IS_DMA_FC, }; -static const struct dw8250_platform_data dw8250_starfive_jh7100_data = { +static const struct dw8250_platform_data dw8250_skip_set_rate_data = { .usr_reg = DW_UART_USR, .quirks = DW_UART_QUIRK_SKIP_SET_RATE, }; @@ -795,7 +795,8 @@ static const struct of_device_id dw8250_of_match[] = { { .compatible = "cavium,octeon-3860-uart", .data = &dw8250_octeon_3860_data }, { .compatible = "marvell,armada-38x-uart", .data = &dw8250_armada_38x_data }, { .compatible = "renesas,rzn1-uart", .data = &dw8250_renesas_rzn1_data }, - { .compatible = "starfive,jh7100-uart", .data = &dw8250_starfive_jh7100_data }, + { .compatible = "sophgo,sg2044-uart", .data = &dw8250_skip_set_rate_data }, + { .compatible = "starfive,jh7100-uart", .data = &dw8250_skip_set_rate_data }, { /* Sentinel */ } }; MODULE_DEVICE_TABLE(of, dw8250_of_match); -- 2.43.0