From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 63E524A2632; Mon, 21 Sep 2026 14:36:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790001371; cv=none; b=n7tG6W1GTJxOTbU7A5a/LSGEgT4s4znLm9wvaSkIaatEEZTkmwCHn/RZoM7Bd8PVRZSge3rauq3LfBId7L+gG65CeQ8BO+cVChQ+ydRIizj+GJmDVKc3D7VQUmwmJnBQkJ5qQQtWlVqcyeMR6iJwXwjNdIVL3shBeVpKR4jB2H0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790001371; c=relaxed/simple; bh=RvNYpNJD6NyJrCYRsRpzmKmx/fUslzMvGYBsiOGsetM=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=e6TZ/4G75bvrkzhGR2JCt+P4dsVLxJxs71KyVC9TyecSlkSZxkQPYqUZ9vLMI5Sgq90DbSiERK5HYip8i1NlNcjeSuXL2UXvgsERFAp1azwE1P1NlSrjSqqzsXXTqbSw6AbSSWOqTzfjdzb7XnvC+6cxHrydGHo1dsJP46eiB9s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=j1iPfMKC; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="j1iPfMKC" Received: by smtp.kernel.org (Postfix) with ESMTPS id D4E7DC2BCB3; Mon, 21 Sep 2026 14:36:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1790001370; bh=RvNYpNJD6NyJrCYRsRpzmKmx/fUslzMvGYBsiOGsetM=; h=From:Subject:Date:To:Cc:Reply-To:From; b=j1iPfMKCWlWIGcXvepMXwgjmgCXm/s557eIVYdYxyk/qal/7I+oJjjd9oopqguIyp DeDcpGRQNA5BL8b2uShBrs4XOd3e85wnSw75zFYN5aV1MPgWQW7ActKnAY6t26OmCF foV2BRmZDdqRt8h0zWYnfFTmz/ogIpn63rH2aohld8+3avs48WKtCtVS0bfASBZsNV pBocxXRRwL7qaqhBRaYmnjLCSh3+58dcZfDsFziBUBf2BVP7f/uUmVjYPtmW/eh3eg 5fQR4BMBbwmU9VPb2MzMPY68mTfyQZdaRPyZGyT7zjcZN2sWJYdWrDsUVOAzEd0K7u ivRTlU7kMRuKQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id A7D76C982ED; Mon, 21 Sep 2026 14:36:10 +0000 (UTC) From: Roman Vivchar via B4 Relay Subject: [PATCH v4 0/3] nvmem: mtk-efuse: mt6572 support Date: Mon, 21 Sep 2026 17:35:46 +0300 Message-Id: <20260921-6572-nvmem-v4-0-e9c14156559a@protonmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/23NTQ6CMBCG4auYrq3pf60r72FcQBm1RihpsdEQ7 m7BGCG6/JJ53ulRhOAgot2qRwGSi843eYj1CtlL0ZwBuypvxAhTRFOCldQMN6mGGkNptlYXmnN JUQZtgJN7TLHD8b3jvbyC7cbCeHFxsfPhOX1LdLz7hOU8nCgm2FjKSzCmIlrv2+A739SFu22sr 9FYT2zmmVh4lj3IbUVVwYxi9K/nX2+IWXievSVWCKqkEvzXD8PwArUp+b07AQAA X-Change-ID: 20260710-6572-nvmem-eb98c7a73351 To: Srinivas Kandagatla , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Andrew-CT Chen , Lala Lin Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Roman Vivchar X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1790001369; l=2204; i=rva333@protonmail.com; s=20260510; h=from:subject:message-id; bh=RvNYpNJD6NyJrCYRsRpzmKmx/fUslzMvGYBsiOGsetM=; b=DuQJTi1dwL/mEHrRKENqtYQHisOv1XvYQM0JbZPjNZUMMbW20rFYplNUypxDL1Y/C7pCqVlYn ZvYHMNQykITCd+jpjAz1IVo8EGMu5O6MAuc5LPXYC3pmFXVwj4e42ih X-Developer-Key: i=rva333@protonmail.com; a=ed25519; pk=zww/nWjBGoQ4POXCG0BV6fx2iuXK6jx77rsKPA5YK5Y= X-Endpoint-Received: by B4 Relay for rva333@protonmail.com/20260510 with auth_id=777 X-Original-From: Roman Vivchar Reply-To: rva333@protonmail.com This patch series adds MediaTek mt6572 efuse support. Unlike newer SoCs, its efuse controller doesn't work properly with 8-bit reads, leading to invalid data with current mtk-efuse driver implementation. This behavior can be observed with devmem (0x10009174 and 0x10009178 are thermal calibration cells): ~ # devmem 0x10009174 32 0x00CDD4CD ~ # devmem 0x10009178 32 0x0F76865D ~ # devmem 0x10009174 8 0xCD ~ # devmem 0x10009175 8 0x00 ~ # devmem 0x10009176 8 0x00 ~ # devmem 0x10009177 8 0x00 ~ # devmem 0x10009178 8 0x5D ~ # devmem 0x10009179 8 0x00 ~ # devmem 0x1000917a 8 0x00 ~ # devmem 0x1000917b 8 0x00 Patch 1 adds dt-bindings compatible for the mt6572, Patch 2 adds platform data option to use aligned 32-bit reads instead of plain readb(). Patch 3 adds platform data for mt6572 SoC. Signed-off-by: Roman Vivchar --- Changes in v4: - Pick up Angelo's tags - Rebase onto nvmem/for-next (2eda8d2a45ca ("Merge branches 'nvmem-fixes' and 'nvmem-for-v7.4' into nvnem-for-next")) - Link to v3: https://patch.msgid.link/20260909-6572-nvmem-v3-0-c0c441656431@protonmail.com Changes in v3: - Pick up Rob's r-b tag for dt-bindings - Patch 2 and 3 unchanged, for some reason cover letter and patch 1 were missing on the web mirror... - Link to v2: https://patch.msgid.link/20260724-6572-nvmem-v2-0-e58d16a29621@protonmail.com Changes in v2: - dt-bindings: make mediatek,mt6572-efuse standalone compatible - Driver: add 'mtk_reg_read_aligned' helper instead of modifying 'mtk_reg_read' - Link to v1: https://patch.msgid.link/20260715-6572-nvmem-v1-0-9c13be99d077@protonmail.com --- Roman Vivchar (3): dt-bindings: nvmem: mediatek: efuse: add mt6572 nvmem: mtk-efuse: add support for 32-bit aligned reads nvmem: mtk-efuse: add mt6572 support .../devicetree/bindings/nvmem/mediatek,efuse.yaml | 5 ++- drivers/nvmem/mtk-efuse.c | 41 +++++++++++++++++++++- 2 files changed, 44 insertions(+), 2 deletions(-) --- base-commit: 2eda8d2a45caa955a5cb1d897bf6024d22041995 change-id: 20260710-6572-nvmem-eb98c7a73351 Best regards, -- Roman Vivchar