From patchwork Mon Sep 11 12:01:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gatien CHEVALLIER X-Patchwork-Id: 13379241 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 ACA2EEE7FF4 for ; Mon, 11 Sep 2023 12:03:03 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To: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=OMY6pzoz5GqKw/pyK0lPIIH0rhX3lNScLCQbo8ZGDgA=; b=pedQABXHha8boj QTPg+TPA0o+F+ysAp38I97oO3CCtnn51AqFpbm9e9loXYt9yt99xwmRr5Tb7Na8b6C9zoubrr5fuC gs0g6+julrAJRnRfXe97hBKrveIyRhgVTTzwDhAu7fHfQWkNttdyYMgAqSMgZq8mYNQB7rFm+Vfaz qC6DKw15UbV1zKkU/CVngFNnCB4bTe6Q5PODjWMx0mIn5jfoJZVPWKs5lproJE1vXpwqBmD3OB+FA C4ATTFmmnXL7If7Bx/jGSDY0j8wE9mBzbbahjXmGaiZBkaT1KeS5Y6zYsxgrHqHcLf85SWk9oINqL rQpqNyLsZQLk/77Hq9/g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qffcn-000Qs0-0U; Mon, 11 Sep 2023 12:02:41 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qffcg-000QpW-0B for linux-arm-kernel@lists.infradead.org; Mon, 11 Sep 2023 12:02:36 +0000 Received: from pps.filterd (m0241204.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.22/8.17.1.22) with ESMTP id 38B9SvEt023313; Mon, 11 Sep 2023 14:02:11 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding:content-type; s=selector1; bh=kCtv8Hd DjZHtcN9R01PgZlyN6/QzJlIsRAMn5cNBsy4=; b=N6Kjrg2v7QKJFbS2Uu1pgex B+xDdWiPhcm876982Sxp0Tj0kD/48VgVDQbjoqtHuYibxqo3sz3IPGUflA5VQCrY o8qq2ef8MBJv2KPCQCPY20gHrPmwUnfT7QQg2Mi6/Er/HEhfU2jQKe4NlsSSh934 jIiRUjzRdnWxA1r0uh074FjQ3t17Wvue6s0tERl62Po3KWZduF2nf082gCUKjPBL gfon7G5VD/VsZvE+ei2diluVt7qAeFivlV9k8nNYNySrOmjoQB2G2KsRe5A+yF6P ZXMz1hlqxJ+4NyXpCFt3hspyBAwFa9KVXeww1aWtNRwLJe/D8TfZB2wUQ/OI58g= = Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3t0g21yvxb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 11 Sep 2023 14:02:11 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id F17DF100061; Mon, 11 Sep 2023 14:02:07 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id E15A5252247; Mon, 11 Sep 2023 14:02:07 +0200 (CEST) Received: from localhost (10.201.20.32) 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 15.1.2507.27; Mon, 11 Sep 2023 14:02:07 +0200 From: Gatien Chevallier To: Olivia Mackall , Herbert Xu , Rob Herring , Krzysztof Kozlowski , Maxime Coquelin , Alexandre Torgue CC: Lionel Debieve , , , , , , Gatien Chevallier Subject: [PATCH v2 00/10] hwrng: stm32: support STM32MP13x platforms Date: Mon, 11 Sep 2023 14:01:53 +0200 Message-ID: <20230911120203.774632-1-gatien.chevallier@foss.st.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.201.20.32] X-ClientProxiedBy: SHFCAS1NODE1.st.com (10.75.129.72) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-11_06,2023-09-05_01,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230911_050234_429833_C9662B45 X-CRM114-Status: GOOD ( 11.88 ) 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 The STM32MP13x platforms have a RNG hardware block that supports customization, a conditional reset sequences that allows to recover from certain situations and a configuration locking mechanism. This series adds support for the mentionned features. Note that the hardware RNG can and should be managed in the secure world for this platform, hence the rng not being default enabled on the STM32MP135F-DK board. Changes in V2: - Use pm_ptr() and add __maybe_unused on PM API - Correct bug using WARN_ON Gatien Chevallier (10): dt-bindings: rng: introduce new compatible for STM32MP13x hwrng: stm32 - use devm_platform_get_and_ioremap_resource() API hwrng: stm32 - implement STM32MP13x support hwrng: stm32 - implement error concealment hwrng: stm32 - rework error handling in stm32_rng_read() hwrng: stm32 - restrain RNG noise source clock dt-bindings: rng: add st,rng-lock-conf hwrng: stm32 - support RNG configuration locking mechanism hwrng: stm32 - rework power management sequences ARM: dts: stm32: add RNG node for STM32MP13x platforms .../devicetree/bindings/rng/st,stm32-rng.yaml | 18 +- arch/arm/boot/dts/st/stm32mp131.dtsi | 8 + drivers/char/hw_random/stm32-rng.c | 511 +++++++++++++++--- 3 files changed, 453 insertions(+), 84 deletions(-)