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 D7D97206F1E; Wed, 4 Dec 2024 23:34:57 +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=1733355298; cv=none; b=KZk1bqd6dYpN5JyO8MtbarKs9/wv9omSrYFSa2meNPlcxkqW/Kq0ZmjLHv2pgg4tckyi7vXwaAE8O6UBHqpjWeoTEXrXLokie6yv0qqCpBs8sARkJsNjlk1uwX1NAXt/LCa9+fcXKeBves+2CT5fNn1qN4Uut8iw0KaBfCbrPxw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733355298; c=relaxed/simple; bh=nXLeo5Lvnrbx7/XuHNCN/7+mLimUxnLn37cF4/DCK+w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=in6raeRMuPh/gXGICpy40U7P34P+RpwIyKUNF64T4izptxFdEK7tnzwWGd/vOwyHLhDgNXDROWyrCww0vVWK8vm6l1rGx1c4O/rbaWYDZrE/TXF2C4edQtJo2JEZ1+3+AtTcRGsqB7IvF4tUZuZcPD1mFgojxak3f6UjMAXo6j4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NvgoqObL; 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="NvgoqObL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7EEDFC2BCB9; Wed, 4 Dec 2024 23:34:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733355297; bh=nXLeo5Lvnrbx7/XuHNCN/7+mLimUxnLn37cF4/DCK+w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NvgoqObLuo9O8cc6G0fbvmUKaoMyTAEbNA4R0BXBMI91LTm7oyMU14u1luC7OubLz lvaKl9dmJwgBKxfhLjWGO3NMYrqwAduK4fW5B2wgh1Cv8gaTocpg83V9qTTGA6YQht N4NBGtRMeukhf9RKVSuX2YwsEhffz0aZGgSXfE77kQt4cC6WqrlSXjfr3Dm6teR/c4 lJ0hVLtAn3ERQGpGTYcv0asdFo+RoaZMoj51FLRUPnR3NKFFzsOkl5J1pjMTruEUuc cBB3P9LjuiA450yzI+EBy8ms1u+hH3npcvZMWQYty1iKtHQ1J+cQQx3I4nuKEY/OWZ 8S6wgVgfdKeEA== 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 6.12 3/8] serial: 8250_dw: Add Sophgo SG2044 quirk Date: Wed, 4 Dec 2024 17:23:19 -0500 Message-ID: <20241204222334.2249307-3-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241204222334.2249307-1-sashal@kernel.org> References: <20241204222334.2249307-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@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 6.12.1 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 ab9e7f2042602..51894c93c8a31 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -750,7 +750,7 @@ 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, }; @@ -760,7 +760,8 @@ 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