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[204.195.96.226]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ada6ad3951fsm6404066b.125.2025.05.28.14.48.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 May 2025 14:48:20 -0700 (PDT) Date: Wed, 28 May 2025 14:48:14 -0700 From: Stephen Hemminger To: Oliver Hartkopp Cc: linux-can@vger.kernel.org Subject: Fw: [Bug 220168] New: flexcan-core.c Message-ID: <20250528144814.17721a4e@hermes.local> Precedence: bulk X-Mailing-List: linux-can@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Begin forwarded message: Date: Wed, 28 May 2025 15:19:21 +0000 From: bugzilla-daemon@kernel.org To: stephen@networkplumber.org Subject: [Bug 220168] New: flexcan-core.c https://bugzilla.kernel.org/show_bug.cgi?id=220168 Bug ID: 220168 Summary: flexcan-core.c Product: Networking Version: 2.5 Hardware: All OS: Linux Status: NEW Severity: normal Priority: P3 Component: Other Assignee: stephen@networkplumber.org Reporter: robbinvandamme@gmail.com Regression: No Bit15 (TDCEN) should not be enabled according to the spec if dbrp > 2 and in the driver it gets enabled when i set dbrp = 10. Resulting in RX Error Frames. spec: ISO11898-1:2015(E), section 11.3.3 (Transmtiter delay compensation) (page 52): It shall be programmable whether the mechanism is used at all. When this mechanism is used, the value of the prescaler for the data time quantum m(D) shall be one or two. The "prescaler for the data time quantim m(D)" is commonly referred to as "dbrp" by implementations. Kind regards, Robbin -- You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.