From patchwork Fri Oct 11 15:41:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gatien CHEVALLIER X-Patchwork-Id: 13832707 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 C9E7CD0EE05 for ; Fri, 11 Oct 2024 15:50:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:CC:To: Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID:Date:Subject: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=EWFrQzCRBMV4WxG/iPDIlAu8I6Hlt8CYexPjPZ/79FM=; b=GR4MYmDm1nfjfb s+FTTGO5XFtylr/P1esFBJxOubdG0Twqe2ynrt+In9rif8wSZFlv5dYxIEsb+BL9huKsFsLLWuipL dfeDLtMC1UOT/n/EcUBB992iGBoFhh3krrrpE/NciriE4+WNkTfdRCVLqaY3ZQHVQMwHhmqzbwhyD oYQ14TIPQq9nFyl1fxIziupO+n442ZWYn/8/m+HyHcE/Sn3vn10dLcXspljDj0KHgb/0995ohZc1o uEryWr7uaAd/yeT5Qb2vDLA1TtpPL/M0F0eSK8R2bIttGE3IKNG7zvFjCsZqBjT7oFWRidsMeEgBq Jg3BVffxBbujl8XAsMTw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1szHuK-0000000GsDY-3LJj; Fri, 11 Oct 2024 15:50:24 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1szHrm-0000000GrWF-08Z3 for linux-arm-kernel@lists.infradead.org; Fri, 11 Oct 2024 15:47:47 +0000 Received: from pps.filterd (m0369458.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49BCUVHT000480; Fri, 11 Oct 2024 17:47:30 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= cc:content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to; s=selector1; bh=EWFrQzCRBMV4WxG/iPDIlA u8I6Hlt8CYexPjPZ/79FM=; b=aKnMQXAAPBuDQqaOQ9jtbxPosdQJMyEU4EntXp 9N5I+cu7+SB+ild+A4DFs2SFQ+H8Tz5Shd+Xmn2BsGfEohVtuRPHVbWKQ2Hryx5n dhpfx+aXD9c9zGyH02RqNmVYcHugJ5ogIGYrLJdPkho6ir1Tey560zBsLV3OX8nl 7MHc5iNqy/K6gMJAN5PXVK7ER/gNM6nUzpa3dSLWsluM41ugNvhv0qgefBZXwW75 RgDWPTSQ95Ldrilz/1FXCWzDCwEfDw2pCy+/foUu/rAQgPhE3Taeh66Qo8bep0QO CYn5enq2QR+bgfpnXHM0+YN/PaBrQIf5TEmOAQ2b768sRzjQ== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 423f11da7a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 11 Oct 2024 17:47:30 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id A789240049; Fri, 11 Oct 2024 17:46:15 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id D43B229E023; Fri, 11 Oct 2024 17:43:14 +0200 (CEST) Received: from localhost (10.252.28.117) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.37; Fri, 11 Oct 2024 17:43:14 +0200 From: Gatien Chevallier Subject: [PATCH v2 0/4] Add support for stm32mp25x RNG Date: Fri, 11 Oct 2024 17:41:40 +0200 Message-ID: <20241011-rng-mp25-v2-v2-0-76fd6170280c@foss.st.com> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIADRHCWcC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyjHQUlJIzE vPSU3UzU4B8JSMDIxNDA0ND3aK8dN3cAiNT3TIj3SQzEzOD1DRDw1TDNCWgjoKi1LTMCrBp0bG 1tQBlNmmyXQAAAA== X-Change-ID: 20241011-rng-mp25-v2-b6460ef11e1f To: Olivia Mackall , Herbert Xu , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Lionel Debieve , CC: , , , , , Gatien Chevallier X-Mailer: b4 0.14.2 X-Originating-IP: [10.252.28.117] X-ClientProxiedBy: EQNCAS1NODE4.st.com (10.75.129.82) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241011_084746_439113_8DF03FC0 X-CRM114-Status: UNSURE ( 9.24 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This patchset adds support for the Random Number Generator(RNG) present on the stm32mp25x platforms. On these platforms, the clock management and the RNG parameters are different. While there, update the RNG max clock frequency on stm32mp15 platforms according to the latest specs. Tested on the stm32mp257f-ev1 platform with a deep power sequence with rngtest before/after the sequence with satisfying results. Same was done on stm32mp135f-dk to make sure no regression was added. On stm32mp157c-dk2, I didn't perform a power sequence but the rngtest results were satisfying. Signed-off-by: Gatien Chevallier --- Changes in V2: -Fixes in bindings -Removed MP25 RNG example -Renamed RNG clocks for mp25 to "core" and "bus" --- Gatien Chevallier (4): dt-bindings: rng: add st,stm32mp25-rng support hwrng: stm32 - implement support for STM32MP25x platforms hwrng: stm32 - update STM32MP15 RNG max clock frequency arm64: dts: st: add RNG node on stm32mp251 .../devicetree/bindings/rng/st,stm32-rng.yaml | 30 +++++++- arch/arm64/boot/dts/st/stm32mp251.dtsi | 10 +++ drivers/char/hw_random/stm32-rng.c | 87 +++++++++++++++++----- 3 files changed, 107 insertions(+), 20 deletions(-) --- base-commit: 1d227fcc72223cbdd34d0ce13541cbaab5e0d72f change-id: 20241011-rng-mp25-v2-b6460ef11e1f Best regards,