From patchwork Mon Jul 29 13:05:39 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: 13744935 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C0AA0C3DA61 for ; Mon, 29 Jul 2024 13:14:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=XUucS1tdumfzXY8FaeAKWyafweWnD8EU3DhFBsklPVM=; b=ZjRdqn66Nfph1iLJ++cgurPJVF Rj3mV3+5IOqe/NKuWr32WvI2DOBjSNGe9zMxY9YPhg7nVE2jjosnztjE1OmIjkH+8RczOvIqUDzCH y6SqwA+J5EEuOe/eu6PlmyS5JMjh1zsZeZUA8t6+mlvvxlgn0zXM8+zQiH8+V1lAarmdLxzYgkRuX L/vm325LBhEumbOr1DrWpd/2i0rgYz+5WWHkrYLwWCbejP7H+3uwmZTPWqxp3UwnFJnUOclkVB0RQ HtZKV9QGg99QMg9rSZmL2zIWOpO5QGRT7kSrwIY+ej28YPggiupRvW0fO1ayQDPNMN9ygUn81CQ+M sq/P39Og==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sYQCZ-0000000BOFR-45aH; Mon, 29 Jul 2024 13:14:11 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sYQ5f-0000000BLEJ-0YHq for linux-arm-kernel@lists.infradead.org; Mon, 29 Jul 2024 13:07:05 +0000 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 1sYQ5d-0000Jw-Tr for linux-arm-kernel@lists.infradead.org; Mon, 29 Jul 2024 15:07:01 +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 1sYQ5d-00332P-AC for linux-arm-kernel@lists.infradead.org; Mon, 29 Jul 2024 15:07:01 +0200 Received: from dspam.blackshift.org (localhost [127.0.0.1]) by bjornoya.blackshift.org (Postfix) with SMTP id 03346310DF5 for ; Mon, 29 Jul 2024 13:07:00 +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 E4644310D9B; Mon, 29 Jul 2024 13:06:51 +0000 (UTC) Received: from [172.20.34.65] (localhost [::1]) by hardanger.blackshift.org (OpenSMTPD) with ESMTP id 57c693f5; Mon, 29 Jul 2024 13:06:31 +0000 (UTC) From: Marc Kleine-Budde Date: Mon, 29 Jul 2024 15:05:39 +0200 Subject: [PATCH can-next 08/21] can: rockchip_canfd: add notes about known issues MIME-Version: 1.0 Message-Id: <20240729-rockchip-canfd-v1-8-fa1250fd6be3@pengutronix.de> References: <20240729-rockchip-canfd-v1-0-fa1250fd6be3@pengutronix.de> In-Reply-To: <20240729-rockchip-canfd-v1-0-fa1250fd6be3@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: 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-37811 X-Developer-Signature: v=1; a=openpgp-sha256; l=1219; i=mkl@pengutronix.de; h=from:subject:message-id; bh=Hdngpw8CwFryUxkp1A2LVjdUgbMRjfZVxon6tGzbtPc=; b=owGbwMvMwMWoYbHIrkp3Tz7jabUkhrTlkw+cbNztw3N49nPf+wVXfEKnfTFKfdnm4ll1+ln// wpFLXaLTkZjFgZGLgZZMUWWAIddbQ+2sdzV3GMXDzOIlQlkCgMXpwBM5N019t9sObUvGvz6ZM4s k3/1uqLzkXOXCaONv/Yazkitu/dWJ37u2397m/UJS9aWW7eEjy+0MjY+Fq87JU27OEA/x674/AN /8dzzRsphYhYzG1PZ5JqXb9ha1f71Eo+bwbzKCbV7rVxnMHPV3FJNUD74UKTFvO+X+Pac2fluLm XcRns8+w7tMpKxeKd4tmWlTOcG4/eZek1X+F5zGx29+VxVXjt1u9/unD8eGU/VXeymKj/wmOgoL xcUdXxdxZu5N7STiz6J66a9mKDT7Nxt5nvo6Zc0+Ul1lz+o3taMkj++bXrensCMfao8B6yE/98W kdHL3Pbr7jS5p71c+4vb2l0fcuRMe+CmWBP9pM/WRVsWAA== 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: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240729_060703_282470_503BEC80 X-CRM114-Status: GOOD ( 12.21 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 c008953ccfc8..b5ad8633a8a6 100644 --- a/drivers/net/can/rockchip/rockchip_canfd.h +++ b/drivers/net/can/rockchip/rockchip_canfd.h @@ -369,6 +369,26 @@ */ #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,