From patchwork Wed Sep 4 08:12:50 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: 13789936 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 D2D9D1898E1 for ; Wed, 4 Sep 2024 08:13:40 +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=1725437625; cv=none; b=uRvRSPka9V/vZF/1lQEQyaR4pJUJzX352iA6fZybfmmZxFz2WiIHMY5TADRx5jmTd9A9I6l1WcXZmeysdBUVjbQdXCe5pz9y/j+5/U6oQpDcY4y0bjHae2Yy5IwyfcARRG78LC0PaOIstRCvh9EM0G/aoAlqiN9tlxZhkDVQczI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725437625; c=relaxed/simple; bh=VsrOVKC9K+LaQQiIiOXdBosBiVeGWiTlyRm7fr3N7vw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=bAvDkkbul79EeP2dNxSFBaWWytCupOpZNrc2xIWCFC2hi9k/5p/ZAMl9wvIBfg2rZZS8+Tr7P1Lp6Gy6g76LBNUAOMlbHhUHMkcfj3X51BGuAbmdLfPRFaaXVT1yWDqM4zf9nr+dqF3e2Ur1RxQrJQXIoXZMSWXV86UJ4SC2saI= 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 1sll8z-0007iS-Qa for netdev@vger.kernel.org; Wed, 04 Sep 2024 10:13:38 +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 1sll8v-005Ox6-1k for netdev@vger.kernel.org; Wed, 04 Sep 2024 10:13:33 +0200 Received: from dspam.blackshift.org (localhost [127.0.0.1]) by bjornoya.blackshift.org (Postfix) with SMTP id 8CE9B33209E for ; Wed, 04 Sep 2024 08:13:32 +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 3CC0E331F57; Wed, 04 Sep 2024 08:13:22 +0000 (UTC) Received: from [172.20.34.65] (localhost [::1]) by hardanger.blackshift.org (OpenSMTPD) with ESMTP id 9f610238; Wed, 4 Sep 2024 08:13:20 +0000 (UTC) From: Marc Kleine-Budde Date: Wed, 04 Sep 2024 10:12:50 +0200 Subject: [PATCH can-next v5 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: <20240904-rockchip-canfd-v5-6-8ae22bcb27cc@pengutronix.de> References: <20240904-rockchip-canfd-v5-0-8ae22bcb27cc@pengutronix.de> In-Reply-To: <20240904-rockchip-canfd-v5-0-8ae22bcb27cc@pengutronix.de> To: kernel@pengutronix.de, Alibek Omarov , 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=2890; i=mkl@pengutronix.de; h=from:subject:message-id; bh=VsrOVKC9K+LaQQiIiOXdBosBiVeGWiTlyRm7fr3N7vw=; b=owEBbQGS/pANAwAKASg4oj56LbxvAcsmYgBm2BaK2XW6FiClAItEB9bj1QgeFuzLjpuf+1dss sdnPV66AnmJATMEAAEKAB0WIQRQQLqG4LYE3Sm8Pl8oOKI+ei28bwUCZtgWigAKCRAoOKI+ei28 b8u4CACYfiZBxZZCJylLKgqkSjipo+sjWKZ495MaqNcy5f9EzUIaOCBBhhehw8pcIvnFkQAH4i/ HRpEZ4Cz+YdAd53t2qk8wT4vFecfEzulsLqpgdu8YvxK94toRN2XUFflPysmE2j9w7jXVALc6vw MF+0M/xJOV6jGhB/yVej40P9dfuIa8J0HXnAP3DEERDtRRt8+R9eUn1ckcE6GJ/7+qG8YpPULEq tGq8xrRfiiRD4w+aIa7MBA3QthmDpYlwKOPdqA40E4njx9EEbUx2gXHMxljX+Fcu40DW6YnvFnD c6kgOVsp/Cmrk92CHdFXU2bKuAKpkxpbIZPqGZPUl8x+fh4U 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. Tested-by: Alibek Omarov 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 18957769b3d3..61de6f89cf16 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) @@ -817,6 +818,8 @@ 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, };