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[2a02:8388:e6ca:5780:e161:768d:5c97:84d0]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49b955e7906sm303549035e9.1.2026.09.01.08.13.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2026 08:13:50 -0700 (PDT) From: Andrei Lalaev Date: Tue, 01 Sep 2026 17:12:59 +0200 Subject: [PATCH RFC 4/6] arm: dts: bcm2712-rpi: specify clock frequency for uart MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260901-add-rpi5-support-v1-4-129784fe06fa@gmail.com> References: <20260901-add-rpi5-support-v1-0-129784fe06fa@gmail.com> In-Reply-To: <20260901-add-rpi5-support-v1-0-129784fe06fa@gmail.com> To: barebox@lists.infradead.org Cc: Andrei Lalaev X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1788275628; l=598; i=andrey.lalaev@gmail.com; s=20260901; h=from:subject:message-id; bh=F9QNYacBW70zT6M15VPk1QJ0dCRdJtWoHjyRE5dAclI=; b=5ZTvW4B/wSPH2CEsPvkeI+RAw+0QeORBI4uyJHt0IRU4cahjzaKiperd6TKJbeEaKJpB/t6tm qLqCGGZzK7RDW3vA6O8OWfcCJnGhWybo4Z28idHfPDsC3osxSZRdv9a X-Developer-Key: i=andrey.lalaev@gmail.com; a=ed25519; pk=YHk+K3q98GV/1CigmrEAQ+Vc0o+GlFWt3j94jvrEh6o= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260901_081353_320005_F1A147B8 X-CRM114-Status: UNSURE ( 8.90 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.1 (--) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: RPI bootloader sets `clocks/clk-uart/clock-frequency` in the DTB to this value. Set it accordingly to get a working debug UART at 115200 baud. Signed-off-by: Andrei Lalaev --- arch/arm/dts/bcm2712-rpi.dtsi | 4 ++++ 1 file changed, 4 insertions(+) Content analysis details: (-2.1 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:336 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider [andrey.lalaev(at)gmail.com] -0.0 DMARC_PASS DMARC pass policy X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-Rspamd-Server: mx1 X-Stat-Signature: 5gq3krmgg8trmq9hyyq5fodsw6x995ga X-Rspamd-Queue-Id: B8CE620582D X-Spamd-Result: default: False [-7.91 / 15.00]; BAYES_HAM(-3.00)[99.99%]; DWL_DNSWL_MED(-2.00)[infradead.org:dkim]; KNOWN_LIST_ID(-1.00)[barebox.lists.infradead.org]; RCVD_DKIM_ARC_DNSWL_MED(-0.50)[]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; MAILLIST(-0.20)[mailman]; R_SPF_ALLOW(-0.20)[+mx:c]; RCVD_IN_DNSWL_MED(-0.20)[2607:7c80:54:3::133:from]; R_DKIM_ALLOW(-0.20)[lists.infradead.org:s=bombadil.20210309,gmail.com:s=20251104]; MIME_GOOD(-0.10)[text/plain]; HAS_LIST_UNSUB(-0.01)[]; RCPT_COUNT_TWO(0.00)[2]; RCVD_COUNT_THREE(0.00)[4]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::336:received]; RECEIVED_HELO_LOCALHOST(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_SOME(0.00)[]; RCVD_TLS_LAST(0.00)[]; FORGED_SENDER_MAILLIST(0.00)[]; FREEMAIL_CC(0.00)[gmail.com]; PREVIOUSLY_DELIVERED(0.00)[barebox@lists.infradead.org]; NEURAL_HAM(-0.00)[-1.000]; FROM_NEQ_ENVFROM(0.00)[andreylalaev@gmail.com,barebox-bounces@lists.infradead.org]; FROM_HAS_DN(0.00)[]; TAGGED_FROM(0.00)[lore=pengutronix.de]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; DKIM_TRACE(0.00)[lists.infradead.org:+,gmail.com:+]; TAGGED_RCPT(0.00)[]; FORGED_RECIPIENTS_MAILLIST(0.00)[]; ASN(0.00)[asn:7247, ipnet:2607:7c80:54::/48, country:US]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim] X-Rspamd-Action: no action RPI bootloader sets `clocks/clk-uart/clock-frequency` in the DTB to this value. Set it accordingly to get a working debug UART at 115200 baud. Signed-off-by: Andrei Lalaev --- arch/arm/dts/bcm2712-rpi.dtsi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/dts/bcm2712-rpi.dtsi b/arch/arm/dts/bcm2712-rpi.dtsi index 9ca671d8df7b..e58138512194 100644 --- a/arch/arm/dts/bcm2712-rpi.dtsi +++ b/arch/arm/dts/bcm2712-rpi.dtsi @@ -3,3 +3,7 @@ / { barebox,deep-probe; }; + +&clk_uart { + clock-frequency = <44236800>; +}; -- 2.55.0