From nobody Mon Feb 9 18:44:29 2026 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 EF93315625A for ; Mon, 29 Jul 2024 13:07:03 +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=1722258425; cv=none; b=SfUEjae46vE4YzgQatio9ozxq+IyaIR3xpoK5bn+r/iKX6IybkAewirJDHOy2G5mjcWuPR2pQKuZvoftzJg40fIcXIkHiNBElfBomRJ10OdFJJJzW28ezeRXKoYc5j8HBJ2vNw19gbGJr8lKDAP7vIlNb4AYmQu04K4A6Mf19pY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722258425; c=relaxed/simple; bh=/MtM0je10WNxJII/ewFIlB26WobcBOKxbC8/UfAf7Xk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=CajT8BrPY9LUPXjh/IjXruCk0O/0jXVP3JWT3AbsVwxNj1VokZcMYN8R86WBHp6pjdX7Sz5o2a5z9bz9sObQGe2aqgC6a8hKGsWBYSkRhLA1SIdxMeZMYx/7qoej3OTkUF+KhuTNpnjnVRqbhWgdwgpvyilG9eT1DPD71S7ZClg= 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 1sYQ5e-0000KK-5k for linux-kernel@vger.kernel.org; Mon, 29 Jul 2024 15:07:02 +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-00332W-Hv for linux-kernel@vger.kernel.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 380E6310DF6 for ; Mon, 29 Jul 2024 13:07:01 +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 4C13B310D88; Mon, 29 Jul 2024 13:06:48 +0000 (UTC) Received: from [172.20.34.65] (localhost [::1]) by hardanger.blackshift.org (OpenSMTPD) with ESMTP id 7bbb0a14; Mon, 29 Jul 2024 13:06:31 +0000 (UTC) From: Marc Kleine-Budde Date: Mon, 29 Jul 2024 15:05:37 +0200 Subject: [PATCH can-next 06/21] can: rockchip_canfd: add quirk for broken CAN-FD support 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" Content-Transfer-Encoding: quoted-printable Message-Id: <20240729-rockchip-canfd-v1-6-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=2840; i=mkl@pengutronix.de; h=from:subject:message-id; bh=/MtM0je10WNxJII/ewFIlB26WobcBOKxbC8/UfAf7Xk=; b=owEBbQGS/pANAwAKASg4oj56LbxvAcsmYgBmp5O9olYnYNcuHP6PcRL671LwYlFLUwNkB3HaE e72XVBzka2JATMEAAEKAB0WIQRQQLqG4LYE3Sm8Pl8oOKI+ei28bwUCZqeTvQAKCRAoOKI+ei28 b67XB/98V054nQ57OqPVCBfXXm8hmPGgXECYfC0fkbIzLGM19qWobJbA03K+XMHGlgitoeeav1L kmLufFWV6ty6BS2rnG+qWCMiayr1tuFuClo7DC1wYmke/kNAxFFObPsj99L7vDtyudMmScBWjcf NZAhllHuxxy2o4asIUPoG3GUs6vJpTCshebn2tqB3KkGOBE7TfGTmM/aASAlyJyMxP2GuCPwooO 0uqh2JKOvIiFHwhenVciU2e8W8Izw6eXePGQVCCA0O2n8yD9JSLYVlmw6g923kYCXOobzdPRPGz rGzy7oEsr4Es99vHV4hj7LSOE3p0wLpkAYSi74EjpqodXiBQ 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-kernel@vger.kernel.org The errata sheets doesn't say anything about CAN-FD, but tests on the rk3568v2 and rk3568v3 show that receiving certain CAN-FD frames triggers an Error Interrupt. Mark the CAN-FD support as broken. Signed-off-by: Marc Kleine-Budde --- drivers/net/can/rockchip/rockchip_canfd-core.c | 5 ++++- drivers/net/can/rockchip/rockchip_canfd.h | 21 +++++++++++++++++++++ 2 files changed, 25 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/rockchip/rockchip_canfd-core.c b/drivers/net/c= an/rockchip/rockchip_canfd-core.c index 961eae352ae4..cc529d5a3028 100644 --- a/drivers/net/can/rockchip/rockchip_canfd-core.c +++ b/drivers/net/can/rockchip/rockchip_canfd-core.c @@ -31,7 +31,8 @@ static const struct rkcanfd_devtype_data rkcanfd_devtype_= data_rk3568v2 =3D { RKCANFD_QUIRK_RK3568_ERRATUM_5 | RKCANFD_QUIRK_RK3568_ERRATUM_6 | RKCANFD_QUIRK_RK3568_ERRATUM_7 | RKCANFD_QUIRK_RK3568_ERRATUM_8 | RKCANFD_QUIRK_RK3568_ERRATUM_9 | RKCANFD_QUIRK_RK3568_ERRATUM_10 | - RKCANFD_QUIRK_RK3568_ERRATUM_11 | RKCANFD_QUIRK_RK3568_ERRATUM_12, + RKCANFD_QUIRK_RK3568_ERRATUM_11 | RKCANFD_QUIRK_RK3568_ERRATUM_12 | + RKCANFD_QUIRK_CANFD_BROKEN, }; =20 static const char *__rkcanfd_get_model_str(enum rkcanfd_model model) @@ -823,6 +824,8 @@ static int rkcanfd_probe(struct platform_device *pdev) priv->can.bittiming_const =3D &rkcanfd_bittiming_const; priv->can.data_bittiming_const =3D &rkcanfd_data_bittiming_const; priv->can.ctrlmode_supported =3D 0; + if (!(priv->devtype_data.quirks & RKCANFD_QUIRK_CANFD_BROKEN)) + priv->can.ctrlmode_supported |=3D CAN_CTRLMODE_FD; priv->can.do_set_mode =3D rkcanfd_set_mode; priv->can.do_get_berr_counter =3D rkcanfd_get_berr_counter; priv->ndev =3D ndev; diff --git a/drivers/net/can/rockchip/rockchip_canfd.h b/drivers/net/can/ro= ckchip/rockchip_canfd.h index b267df438a82..43a6682f3651 100644 --- a/drivers/net/can/rockchip/rockchip_canfd.h +++ b/drivers/net/can/rockchip/rockchip_canfd.h @@ -348,6 +348,27 @@ */ #define RKCANFD_QUIRK_RK3568_ERRATUM_12 BIT(11) =20 +/* Tests on the rk3568v2 and rk3568v3 show that receiving certain + * CAN-FD frames trigger an Error Interrupt. + * + * - Form Error in RX Arbitration Phase: TX_IDLE RX_STUFF_COUNT (0x0a01010= 0) CMD=3D0 RX=3D0 TX=3D0 + * Error-Warning=3D1 Bus-Off=3D0 + * To reproduce: + * host: + * cansend can0 002##01f + * DUT: + * candump any,0:0,#FFFFFFFF -cexdHtA + * + * - Form Error in RX Arbitration Phase: TX_IDLE RX_CRC (0x0a010200) CMD= =3D0 RX=3D0 TX=3D0 + * Error-Warning=3D1 Bus-Off=3D0 + * To reproduce: + * host: + * cansend can0 002##07217010000000000 + * DUT: + * candump any,0:0,#FFFFFFFF -cexdHtA + */ +#define RKCANFD_QUIRK_CANFD_BROKEN BIT(12) + enum rkcanfd_model { RKCANFD_MODEL_RK3568V2 =3D 0x35682, }; --=20 2.43.0