From patchwork Wed Jul 31 09:37:08 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: 13748346 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 541881AE847 for ; Wed, 31 Jul 2024 09:38:06 +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=1722418687; cv=none; b=X2Zhb698lCnrWqygReabUSum2e1j80HGRO8u9S+qdLqUaElLJ4a8XvisbMMo1lK25Wf2x1WvYSyd1MDjjTFxFOlMqB387sfI1mR1yBdgSHxpBw8u44vLMO1y2lxSCwNi9Ha6C2glTL31CLmjBXOWF9BIGm71nS2mCLd+edMLtBk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722418687; c=relaxed/simple; bh=mKoxOQzQLkeZYomIhRbPKwzQLa0k13BGcghKhxoxh1M=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GFyE7DoQNBbgsBI3021TL91mHMzluQM1olNtHSEVb0LtLs5lZgsb8zQB2eeUpqvlqFI1pnGq5XYaCGdfGnRv6ZjqFBTevZeMmw1dFYkcbOtHI8ldul0+6TOpL//qTw1EI33qjCrUTkSx9CH6RPEOtfdjyNhyn+zE/C+EPNG86hY= 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 1sZ5mU-0005fd-EZ for netdev@vger.kernel.org; Wed, 31 Jul 2024 11:38:02 +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 1sZ5mO-003Unw-TM for netdev@vger.kernel.org; Wed, 31 Jul 2024 11:37:56 +0200 Received: from dspam.blackshift.org (localhost [127.0.0.1]) by bjornoya.blackshift.org (Postfix) with SMTP id 3D00E3128A0 for ; Wed, 31 Jul 2024 09:37:56 +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 A68EF3127EA; Wed, 31 Jul 2024 09:37:49 +0000 (UTC) Received: from [172.20.34.65] (localhost [::1]) by hardanger.blackshift.org (OpenSMTPD) with ESMTP id 02e0460c; Wed, 31 Jul 2024 09:37:42 +0000 (UTC) From: Marc Kleine-Budde Date: Wed, 31 Jul 2024 11:37:08 +0200 Subject: [PATCH can-next v2 06/20] can: rockchip_canfd: add quirk for broken CAN-FD support Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240731-rockchip-canfd-v2-6-d9604c5b4be8@pengutronix.de> References: <20240731-rockchip-canfd-v2-0-d9604c5b4be8@pengutronix.de> In-Reply-To: <20240731-rockchip-canfd-v2-0-d9604c5b4be8@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-37811 X-Developer-Signature: v=1; a=openpgp-sha256; l=2840; i=mkl@pengutronix.de; h=from:subject:message-id; bh=mKoxOQzQLkeZYomIhRbPKwzQLa0k13BGcghKhxoxh1M=; b=owEBbQGS/pANAwAKASg4oj56LbxvAcsmYgBmqgXONWls6UBwbBjaMIaBOaThO4Ric6nTVZxe4 Jw4jAblmPiJATMEAAEKAB0WIQRQQLqG4LYE3Sm8Pl8oOKI+ei28bwUCZqoFzgAKCRAoOKI+ei28 b2tzCACUg/i3PittWMmkkr1k6c35EmexZm5O9ULgapO7FiEQhr/gaBPXabwMOqSUr8VSkXKqR3B sBKHSAkcrYxIzlphuW1ADFeF/nUbFPd8gmIQjbdnzeVoU88kkw3oT2Ej29diCTfiRgEzub3dX8w QacLW7BEYMjChES8Uc01xK7N2yb42FMISNw3B4XS6z/2jSajvkg+dovFr/IShoZsfxuAAsdOhtS Urt7O9/sloI8KcCRtwJD+FKcJ8rblW0O6Obn3ounahEzbzTp9XSjJiBAWc2bucL3MW+WyQz/wii 7FNneGcqaid2khtjB6VAK78Rf49tushOqzfPMN1K088/me2K 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 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/can/rockchip/rockchip_canfd-core.c index 6329ad1fe154..0887164b0db3 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 = { 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, }; static const char *__rkcanfd_get_model_str(enum rkcanfd_model model) @@ -820,6 +821,8 @@ static int rkcanfd_probe(struct platform_device *pdev) priv->can.bittiming_const = &rkcanfd_bittiming_const; priv->can.data_bittiming_const = &rkcanfd_data_bittiming_const; priv->can.ctrlmode_supported = 0; + if (!(priv->devtype_data.quirks & RKCANFD_QUIRK_CANFD_BROKEN)) + priv->can.ctrlmode_supported |= CAN_CTRLMODE_FD; priv->can.do_set_mode = rkcanfd_set_mode; priv->can.do_get_berr_counter = rkcanfd_get_berr_counter; priv->ndev = ndev; diff --git a/drivers/net/can/rockchip/rockchip_canfd.h b/drivers/net/can/rockchip/rockchip_canfd.h index 09626ca174a8..7321027534fb 100644 --- a/drivers/net/can/rockchip/rockchip_canfd.h +++ b/drivers/net/can/rockchip/rockchip_canfd.h @@ -349,6 +349,27 @@ */ #define RKCANFD_QUIRK_RK3568_ERRATUM_12 BIT(11) +/* 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 (0x0a010100) CMD=0 RX=0 TX=0 + * Error-Warning=1 Bus-Off=0 + * 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=0 RX=0 TX=0 + * Error-Warning=1 Bus-Off=0 + * 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 = 0x35682, };