From patchwork Fri Aug 30 19:26:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Kleine-Budde X-Patchwork-Id: 13785459 X-Patchwork-Delegate: kuba@kernel.org Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (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 4816B1BFDE2 for ; Fri, 30 Aug 2024 19:27:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725046034; cv=none; b=cVKjGfFKExfAcjuec5QNw29amaB2NICp6xBFhpXlg4EE0/5Pyb582WRreJODHLBTeZ8ROTtVt8Qsn+ChpurFtLN6mQMVxI77zBBvfxE9Pg7jSLc2YtF0+ioFuacvC1Xuck5O+iAFKKBA0EwSDsNoFNSNpbJopMm59M9DaU/Qhis= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725046034; c=relaxed/simple; bh=L9Nl19jQ0rlZqgQunUAoISdoYkyHWfdsG+IX7vgSjoA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ZGI/CrhHmli2O34fFyxp3qnUa62MeHicNHe54KdTIITc0ue4MhTpCikUxR4ZaR0xI853pUtIVwpZajAl2MOVVpPL9lR7JnvYgsdHKs6QUMgJHfsKD/28oAq9TvOoEIXb94Ec5NRwGQaDBM3EJYgvsqC8vXf7dFYpYUDUT5Yg9+s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sk7H0-0006KB-6E for netdev@vger.kernel.org; Fri, 30 Aug 2024 21:27:06 +0200 Received: from [2a0a:edc0:0:b01:1d::7b] (helo=bjornoya.blackshift.org) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sk7Gq-004Dp8-Ng for netdev@vger.kernel.org; Fri, 30 Aug 2024 21:26:56 +0200 Received: from dspam.blackshift.org (localhost [127.0.0.1]) by bjornoya.blackshift.org (Postfix) with SMTP id 5749C32E23B for ; Fri, 30 Aug 2024 19:26:56 +0000 (UTC) Received: from hardanger.blackshift.org (unknown [172.20.34.65]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by bjornoya.blackshift.org (Postfix) with ESMTPS id C65BD32E100; Fri, 30 Aug 2024 19:26:46 +0000 (UTC) Received: from [172.20.34.65] (localhost [::1]) by hardanger.blackshift.org (OpenSMTPD) with ESMTP id 6919bcdd; Fri, 30 Aug 2024 19:26:45 +0000 (UTC) From: Marc Kleine-Budde Date: Fri, 30 Aug 2024 21:26:05 +0200 Subject: [PATCH can-next v3 08/20] can: rockchip_canfd: add notes about known issues Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240830-rockchip-canfd-v3-8-d426266453fa@pengutronix.de> References: <20240830-rockchip-canfd-v3-0-d426266453fa@pengutronix.de> In-Reply-To: <20240830-rockchip-canfd-v3-0-d426266453fa@pengutronix.de> To: kernel@pengutronix.de, Vincent Mailhol , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Philipp Zabel , Elaine Zhang , David Jander Cc: Simon Horman , linux-can@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Marc Kleine-Budde X-Mailer: b4 0.15-dev-99b12 X-Developer-Signature: v=1; a=openpgp-sha256; l=1219; i=mkl@pengutronix.de; h=from:subject:message-id; bh=L9Nl19jQ0rlZqgQunUAoISdoYkyHWfdsG+IX7vgSjoA=; b=owEBbQGS/pANAwAKASg4oj56LbxvAcsmYgBm0hzhwYzVlZ5wgnyOhhah5zZi7aL0R3v/KCscT //i1+bUVYGJATMEAAEKAB0WIQRQQLqG4LYE3Sm8Pl8oOKI+ei28bwUCZtIc4QAKCRAoOKI+ei28 bzgDB/95axjXMh3uhwLCVlXLIf/5saGkNkJg7v8r5K6zFqEcBDYC4ezeGNsieKXdZypu6o3ShZb zS7fkisKxMrhMHi+Wxd9FL8zbh2QllzbzVUtI0h1sLQptrcCT/pA8CRU1RgOndN8UNEb6XU6AOY dVU6jGkZeeVMCmM5uJ1Ni1Ec3a0UYdWk7RXHhCWy2AYbrNxsvxXYW5pAY4FA2td01CfmXIAHHJb Yzq6iK5VtkGLzSyp94y4FpV8PC6EaA3Id15mtbTwWidbaPvx448qPLpemWWy2BUpqBa6Jk9sl4C TDOkcS625UYVwPZykUbKY3IuxW3LZ+94Agb4C0ns6V3RYzE2 X-Developer-Key: i=mkl@pengutronix.de; a=openpgp; fpr=C1400BA0B3989E6FBC7D5B5C2B5EE211C58AEA54 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Even the rk3568v3 has some known issues. Document them together with a reproducer. Signed-off-by: Marc Kleine-Budde --- drivers/net/can/rockchip/rockchip_canfd.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/net/can/rockchip/rockchip_canfd.h b/drivers/net/can/rockchip/rockchip_canfd.h index 9b446331fbd0..3dafb5e68dc5 100644 --- a/drivers/net/can/rockchip/rockchip_canfd.h +++ b/drivers/net/can/rockchip/rockchip_canfd.h @@ -370,6 +370,26 @@ */ #define RKCANFD_QUIRK_CANFD_BROKEN BIT(12) +/* known issues with rk3568v3: + * + * - Overload situation during high bus load + * To reproduce: + * host: + * # add a 2nd CAN adapter to the CAN bus + * cangen can0 -I 1 -Li -Di -p10 -g 0.3 + * cansequence -rve + * DUT: + * cangen can0 -I2 -L1 -Di -p10 -c10 -g 1 -e + * cansequence -rv -i 1 + * + * - TX starvation after repeated Bus-Off + * To reproduce: + * host: + * sleep 3 && cangen can0 -I2 -Li -Di -p10 -g 0.0 + * DUT: + * cangen can0 -I2 -Li -Di -p10 -g 0.05 + */ + enum rkcanfd_model { RKCANFD_MODEL_RK3568V2 = 0x35682, RKCANFD_MODEL_RK3568V3 = 0x35683,