From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 865D03D7D9F; Fri, 18 Sep 2026 21:52:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789768380; cv=none; b=rZFf9rTuocU2pnaP9rU5fdPI/HaW17d/versdH37PQR422osgSrRVP4AVEZxNenmFFBElmIAPHpM3Pr9NYD6q+FtUdX4BshlKjjwIsVfmO2A2GStFsSx/Q5GjxbOs59vHM7bZlUZ5EStY38nrY7YmCw1oLoTH4HFjlREoqVZKR0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789768380; c=relaxed/simple; bh=PxHZY7gPLw6GvHpgwubriVfc/bvdEiuUW0dJeJaGNd0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=IGTNbvtgIlbE7Ka5b43Sf7NCmt1uAa7387eAfJu0Pv1p8SoMcUimKWWfzASSWzGpZH4E36nZR5nMdOK95EXZgEBWfVUzgIIp15Kn8fEkBKYKgiLNOEJM5rVWt1oahZuiFR/OpCNDrpyuCVQRafpWy7dbFMcgty3rgfE8lt+xtVM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=N4e2esu+; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="N4e2esu+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EBD681F000FF; Fri, 18 Sep 2026 21:52:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789768379; bh=8W8XO/Ae5cM2yDYef7QCLLw8szG6m9g5X/FwN3K83rI=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=N4e2esu+nbbszP6tLi19HQcyp3UTfm/8Ra6HgTLuOQ+lNSqq8wN+HG+5h6voAyqvw JBkuq0O+9qHVnNQbBgRtykiL9pO3Vt6BwH2Sj8pF/dmFnLgHgRR7aDvmMyMcioECsa G+aklz+r4vk8Zf6tskvGHkWPFLLypq9CoO1qx+wVAOYydQqrmMy3HKK6igwX3IHg5M sLlhMMa99E+cjHdfktxpavspkszmjIeW8oThUebLcBwp6ttL7d/w/VRXtIXH6Xkzw9 4QKPO2HHZrpt/1GgREjb06tQk9uZU3M+lxyfNiL7jZ1dCpQEMKqJ0qcVPg0k4lI7VI ypWSSAtI1vISw== Message-ID: Date: Fri, 18 Sep 2026 22:52:55 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 0/3] nvmem: mtk-efuse: mt6572 support To: rva333@protonmail.com, 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 References: <20260909-6572-nvmem-v3-0-c0c441656431@protonmail.com> Content-Language: en-US From: Srinivas Kandagatla In-Reply-To: <20260909-6572-nvmem-v3-0-c0c441656431@protonmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 9/9/26 11:48 AM, Roman Vivchar via B4 Relay wrote: > 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 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 > Doesn't apply cleanly pl resend. --srini > .../devicetree/bindings/nvmem/mediatek,efuse.yaml | 5 ++- > drivers/nvmem/mtk-efuse.c | 41 +++++++++++++++++++++- > 2 files changed, 44 insertions(+), 2 deletions(-) > --- > base-commit: 8cd9520d35a6c38db6567e97dd93b1f11f185dc6 > change-id: 20260710-6572-nvmem-eb98c7a73351 > > Best regards, > -- > Roman Vivchar > >