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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/pANAwAKASg4oj56LbxvAcsmYgBm1tU8AduGzEnMwWXSNLUpSTbUhCTblU5FGTLCI Rr4WKWyvg+JATMEAAEKAB0WIQRQQLqG4LYE3Sm8Pl8oOKI+ei28bwUCZtbVPAAKCRAoOKI+ei28 by8+B/9a6wRqyShjrDWFtwtsZL0CPVR7YzINZC5eDdnEQ4rbqQ0+90v0TRSumuaw0Pw1rpFeurW QyngOxQO+YyfL6eoWY45Vte1ZJZOpUhB6UwbB7QzIe1ptPXeM7XIpd5QbLu57Pb8JO2qmf5mnlF JQBq0izc2wiha2XD7HpnPq8dtypO03pehLyUmSY+zgRHdAqWdCwu4GpqF6yxKDcvsAaiQp+TLBI /c6zcC/UH6h7zD/VpiJSMYuIx1J5+3BQt1YfeRFiEkbE5kaAyAytBjd0LI2Ph+o30ma5mbQQO+3 489sWRvBYdXtWKtD4j8IkVImzTo3I3Q2Xys3QPzLRhRnImyT 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-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240903_102244_398155_244ED7DC X-CRM114-Status: GOOD ( 16.55 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.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, };