From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta0.migadu.com (out-182.mta0.migadu.com [91.218.175.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0EA483655D1 for ; Thu, 15 Oct 2026 06:43:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792046635; cv=none; b=hyuoTL8dYVi9zLO8W8BLs+wxDE4GRaqLqgINMj2tGj7tSfFGt9wcy3KoLpQwjf9VeCjpVlZ7q2jl39LQUZhPvKybb0a6BvJ8/domrbyxuWrOC3IKRPhPHPBzvqXt3D4fbes6I2beaSxhCk18ZBg4p6y7/MCSwJcoASYvUwWPd50= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792046635; c=relaxed/simple; bh=/FYj6q7Xy2ng34DBUXkiLlonCACAzlEqokQQ19iqyR8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Qgu+LeI5T/Z5gczbAAPRTnmyH0dRvXApYmYpihEyXcGdEG9k+U2TNJhnSfYylsPFh2h75n9uoW6w7gmDRGtnqXPyGl8hLUDhkJPGX9YryE+tP9y7aeZzn62hrlXOH3P7P8ulAwx3oGw+K181dQRHaWkBzLybjd4t6I2clY5Flng= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=fbfkCjIy; arc=none smtp.client-ip=91.218.175.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="fbfkCjIy" X-Envelope-To: sophgo@lists.linux.dev DKIM-Signature: a=rsa-sha256; bh=/FYj6q7Xy2ng34DBUXkiLlonCACAzlEqokQQ19iqyR8=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1792046631; v=1; x=1792651431; b=fbfkCjIyI6oMfT80f0tNqWkRWtXmeJMbFZPlrVDzy1bHHjHP5UkueRV9HdSmegmFFfiRCjD3 YL5BTwRpLlW90oj0ekU88T7H2jdTfH2u/SJ07POd+TRQqrQzgYT//fJ5LEfgPEaLr3PXbKWn4rt 6KBD0eGP6baohdA9k5Rf/oPI= X-Envelope-To: sophgo@lists.linux.dev Received: by smtp.migadu.com with ESMTPS id 862023fca479452c; Thu, 15 Oct 2026 06:43:50 +0000 X-Mizu-Trace-ID: 862023fca479452c X-Migadu-Flow: FLOW_OUT Message-ID: Date: Thu, 15 Oct 2026 14:43:40 +0800 Precedence: bulk X-Mailing-List: sophgo@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/3] nvmem: Add Sophgo SG2044 eFuse driver To: Inochi Amaoto , Srinivas Kandagatla , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Albert Ou , Alexandre Ghiti Cc: devicetree@vger.kernel.org, sophgo@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Yixun Lan , Longbin Li References: <20261014074516.240247-1-inochiama@gmail.com> <20261014074516.240247-3-inochiama@gmail.com> From: Chen Wang In-Reply-To: <20261014074516.240247-3-inochiama@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hello, On 10/14/2026 3:45 PM, Inochi Amaoto wrote: > Sophgo SoCs such as SG2044 contain eFuses used to store > factory-programmed data. > > As for SG2044, HW automatically loads the eFuse content > into shadow registers which are organized as 32bit values > exposed as MMIO. > > Signed-off-by: Inochi Amaoto > --- > drivers/nvmem/Kconfig | 12 +++ > drivers/nvmem/Makefile | 2 + > drivers/nvmem/sophgo-efuse.c | 176 +++++++++++++++++++++++++++++++++++ > 3 files changed, 190 insertions(+) > create mode 100644 drivers/nvmem/sophgo-efuse.c > > diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig > index c36c2a4c2a0b..a7936dd65bdd 100644 > --- a/drivers/nvmem/Kconfig > +++ b/drivers/nvmem/Kconfig > @@ -465,6 +465,18 @@ config NVMEM_SNVS_LPGPR > This driver can also be built as a module. If so, the module > will be called nvmem-snvs-lpgpr. > > +config NVMEM_SOPHGO_EFUSE > + tristate "Sophgo eFuse support" > + depends on ARCH_SOPHGO || COMPILE_TEST > + default ARCH_SOPHGO > + help > + Say y here to enable support for reading eFuses on Sophgo SoCs > + such as the CV1800B. These are e.g. used to store factory programmed Why is "CV1800B"? [...] From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E6BCDCC6B2F for ; Thu, 15 Oct 2026 06:44:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=H0/y6R7ngUQJwacsJLUQrxR3s2r5FVFEMzS9OyaJFlo=; b=PUx23NGuDAALMH 6OE6BfMYm0QKjaneW9nEw892Ya61f+GDyeraVxIqihWJdV1ivcWjgBi4yNapxrgjPbjvlZkqUkYxq GOBn9N2Te6PxX8xo1pCayNTp61+AsNDKp7KbYQmb+k9EV/JztmKZWd8tQSAiLwVUPwERRz5ei72lQ b0bBLb/abM8woGkkbQW9awy9t4+CMILmZb6/XKHvWSDFJLz1jrEAv+A5sLK48fDQk0RhX831fwy5J 6lkDhFycSuzOG5y3QQKH2WBSpusytRC3K0j3ePWin6j6l3f7OKCmk+0Iy+BOpZjDlvF2UqoPnpLZ7 1UHnm8MHakiPQc90l5Wg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xHFC3-0000000GxKY-0XlA; Thu, 15 Oct 2026 06:43:59 +0000 Received: from out-118.mta0.migadu.com ([2001:41d0:1004:224b::76] helo=mta0.migadu.com) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xHFBy-0000000GxK4-28cp for linux-riscv@lists.infradead.org; Thu, 15 Oct 2026 06:43:57 +0000 X-Envelope-To: linux-riscv@lists.infradead.org DKIM-Signature: a=rsa-sha256; bh=/FYj6q7Xy2ng34DBUXkiLlonCACAzlEqokQQ19iqyR8=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1792046630; v=1; x=1792651430; b=f3LwMJFHcqTWRCRYFVnAsv20Hi0p7HijH6YmxUbKDctE167ucasVmuKgtC5oQYc3l5Ypms14 lZtNq5mx6tT2oLXLDrddUUpBmJaBpXgfP2JkwnWld0zJBZ2BCRpqgx/JHFjDOPblzMpyk1ittCT qfVvSBrP/ZAHhgoK1YPyXlC4= X-Envelope-To: linux-riscv@lists.infradead.org Received: by smtp.migadu.com with ESMTPS id 862023fca479452c; Thu, 15 Oct 2026 06:43:50 +0000 X-Mizu-Trace-ID: 862023fca479452c X-Migadu-Flow: FLOW_OUT Message-ID: Date: Thu, 15 Oct 2026 14:43:40 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/3] nvmem: Add Sophgo SG2044 eFuse driver To: Inochi Amaoto , Srinivas Kandagatla , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Albert Ou , Alexandre Ghiti Cc: devicetree@vger.kernel.org, sophgo@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Yixun Lan , Longbin Li References: <20261014074516.240247-1-inochiama@gmail.com> <20261014074516.240247-3-inochiama@gmail.com> From: Chen Wang In-Reply-To: <20261014074516.240247-3-inochiama@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261014_234354_936091_C3D12F8F X-CRM114-Status: GOOD ( 14.21 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Hello, On 10/14/2026 3:45 PM, Inochi Amaoto wrote: > Sophgo SoCs such as SG2044 contain eFuses used to store > factory-programmed data. > > As for SG2044, HW automatically loads the eFuse content > into shadow registers which are organized as 32bit values > exposed as MMIO. > > Signed-off-by: Inochi Amaoto > --- > drivers/nvmem/Kconfig | 12 +++ > drivers/nvmem/Makefile | 2 + > drivers/nvmem/sophgo-efuse.c | 176 +++++++++++++++++++++++++++++++++++ > 3 files changed, 190 insertions(+) > create mode 100644 drivers/nvmem/sophgo-efuse.c > > diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig > index c36c2a4c2a0b..a7936dd65bdd 100644 > --- a/drivers/nvmem/Kconfig > +++ b/drivers/nvmem/Kconfig > @@ -465,6 +465,18 @@ config NVMEM_SNVS_LPGPR > This driver can also be built as a module. If so, the module > will be called nvmem-snvs-lpgpr. > > +config NVMEM_SOPHGO_EFUSE > + tristate "Sophgo eFuse support" > + depends on ARCH_SOPHGO || COMPILE_TEST > + default ARCH_SOPHGO > + help > + Say y here to enable support for reading eFuses on Sophgo SoCs > + such as the CV1800B. These are e.g. used to store factory programmed Why is "CV1800B"? [...] _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv