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Fri, 02 Oct 2026 18:27:16 -0700 (PDT) Received: from localhost ([201.89.183.74]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-34f067301b5sm10442242eec.1.2026.10.02.18.27.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Oct 2026 18:27:15 -0700 (PDT) From: Otavio Salvador To: Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Srinivas Kandagatla , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Maxime Ripard , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, Otavio Salvador Subject: [PATCH 0/2] Add SID and THS calibration for Allwinner R40 Date: Fri, 2 Oct 2026 22:25:34 -0300 Message-ID: <20261003012534.418820-3-otavio@ossystems.com.br> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Rspamd-Server: rspamd-worker-8404 X-Spamd-Result: default: False [5.84 / 15.00]; RBL_SENDERSCORE(2.00)[172.234.253.10:from]; 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RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FORGED_RECIPIENTS_MAILLIST(0.00)[]; ARC_ALLOW(0.00)[subspace.kernel.org:s=arc-20240116:i=1]; R_DKIM_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[] X-Rspamd-Queue-Id: 310E71C05A5 X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= The R40 thermal sensor node has no calibration data. The THS driver then keeps the calibration registers at their reset value (0x800), and the reported temperatures have a chip-dependent offset. This series adds the R40 SID (eFuse) controller and connects the THS node to its factory calibration at eFuse offset 0x40. Patch 1 adds the R40 compatible to the SID binding, with the A64 compatible as fallback. The SID driver needs no change. Patch 2 adds the SID node to sun8i-r40.dtsi and the nvmem cell for the THS calibration. Checked with dt_binding_check, and with dtbs_check on all R40, V40 and T3 board DTBs. No warnings. Tested on two Boardcon EMA40i (A40i) boards. Otavio Salvador (2): dt-bindings: nvmem: SID: Add binding for R40 SID controller ARM: dts: sun8i-r40: Add SID node and THS calibration .../bindings/nvmem/allwinner,sun4i-a10-sid.yaml | 1 + arch/arm/boot/dts/allwinner/sun8i-r40.dtsi | 15 ++++++++++++++- 2 files changed, 15 insertions(+), 1 deletion(-) base-commit: ff47652a4b66c067c765a7ad464d930b5a9367cc