From patchwork Thu Jan 12 04:38:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: JiaJie Ho X-Patchwork-Id: 3891 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:4e01:0:0:0:0:0 with SMTP id p1csp3691043wrt; Wed, 11 Jan 2023 20:39:01 -0800 (PST) X-Google-Smtp-Source: AMrXdXvqn+Bf0LH8Xy2eqCZF1zl5UPRp0mdRqCRqDC4zUoN+zBOSrr8zz86/HYSf5WXEUMOFkNF/ X-Received: by 2002:a05:6a20:8e02:b0:ad:a09c:5734 with SMTP id y2-20020a056a208e0200b000ada09c5734mr8096358pzj.44.1673498341106; Wed, 11 Jan 2023 20:39:01 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1673498341; cv=none; d=google.com; s=arc-20160816; b=FOal9ittTRoIj3aihtpA+aOTTa/4GVFi1Z2zdiTDmUukoE8C96fAYsBLD6oVBpS0DX zrmAaspfL0/WiyoLVJX+vFT/YOvKgo5BlTfJIyB/qQiH96wypA4h1o/ogq0/wC/cSIkw AhRA5S98ekNhpIoUuCPu5dDl9vAAjjuGA4IzDgR2wiaYGVnXEtnlOCxy3Jtoc7DGy8X6 dBiK5725i++D4RqEhIL3ILf2vlTARf/yXNVuBeUcEFU3kV/LMvyVEvPRITWWKUThKIrj FJaJwHqhgxvZQ8qxc9Ryfxg5nOfb6gaA+zJ/kWDEyPfLlKfmWtjon3DP2V4DssjkzuLM Ol1w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=iJKIslx9rkXd6mT9P5+6Uk4HTENTd4lrubZ6u4L2Xx0=; b=WhuSGBkKpTWhaqz36W6epQC1OacS6UDUO/jKZpQtMMuDGJOSu2xqhF9DiAsYuRhU38 cRg18HXq3zxoAsQpPXPfvQtSrTXxyUhXjximyJw4NiRU0fBmhOrU0/ItxrhKI4ujit4S j9nDKafqTdhbYW96lgrwFtjT5jvxF1M84PEzq57E9C3otFlnrT6kUV70gHq9cB9KuV9D sekCzcumA9Ob3J/XfVPWehcCrXhV4+PvY12iRnLJk3QpNS7bDZi/yFFL6We43ipKfnMc 38t3iu1j1+/Nxs22hfPwvkYmCyN5/rELAXiOgGt9f35Ve8fXg9N/ZZdBezQMWph0gQAr xMYg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id h29-20020a63385d000000b00499f6fe3806si12814266pgn.666.2023.01.11.20.38.48; Wed, 11 Jan 2023 20:39:01 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236611AbjALEie convert rfc822-to-8bit (ORCPT + 99 others); Wed, 11 Jan 2023 23:38:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34366 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236570AbjALEia (ORCPT ); Wed, 11 Jan 2023 23:38:30 -0500 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38B4845650; Wed, 11 Jan 2023 20:38:26 -0800 (PST) Received: from EXMBX165.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX165", Issuer "EXMBX165" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id A38A424DBC0; Thu, 12 Jan 2023 12:38:19 +0800 (CST) Received: from EXMBX168.cuchost.com (172.16.6.78) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Thu, 12 Jan 2023 12:38:19 +0800 Received: from ubuntu.localdomain (202.188.176.82) by EXMBX168.cuchost.com (172.16.6.78) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Thu, 12 Jan 2023 12:38:15 +0800 From: Jia Jie Ho To: Olivia Mackall , Herbert Xu , Rob Herring , "Krzysztof Kozlowski" , Emil Renner Berthing , Conor Dooley CC: , , , Subject: [PATCH v4 0/3] hwrng: starfive: Add driver for TRNG module Date: Thu, 12 Jan 2023 12:38:09 +0800 Message-ID: <20230112043812.150393-1-jiajie.ho@starfivetech.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [202.188.176.82] X-ClientProxiedBy: EXCAS064.cuchost.com (172.16.6.24) To EXMBX168.cuchost.com (172.16.6.78) X-YovoleRuleAgent: yovoleflag X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754790196761587545?= X-GMAIL-MSGID: =?utf-8?q?1754790196761587545?= This patch series adds kernel support for StarFive hardware random number generator. First 2 patches add binding docs and device driver for this module. Patch 3 adds devicetree entry for VisionFive 2 SoC. Patch 3 needs to be applied on top of: https://patchwork.kernel.org/project/linux-riscv/patch/20221220011247.35560-7-hal.feng@starfivetech.com/ Patch 3 also depends on additional clock and reset patches for stg domain that are yet to be submitted to mailing list. Changes v3 -> v4: - move init completion before IRQ registration to be prepared for spurious interrupts. (Herbert) - add locks to guard concurrent write to same register in Patch 2. (Herbert) Changes v2 -> v3: - use constant usecs and convert to jiffies in Patch 2. (Herbert) - remove sleep in irq handler in Patch 2. (Herbert) - limit wait timer to 40us if wait == 0 for trng read. (Herbert) Changes v1 -> v2: - updated of_match_ptr and added pm_sleep_ptr in Patch 2. (by Krzysztof) - drop "status" in dts as module is always on in Patch 3. (by Krzysztof) Jia Jie Ho (3): dt-bindings: rng: Add StarFive TRNG module hwrng: starfive - Add TRNG driver for StarFive SoC riscv: dts: starfive: Add TRNG node for VisionFive 2 .../bindings/rng/starfive,jh7110-trng.yaml | 55 +++ MAINTAINERS | 6 + arch/riscv/boot/dts/starfive/jh7110.dtsi | 10 + drivers/char/hw_random/Kconfig | 11 + drivers/char/hw_random/Makefile | 1 + drivers/char/hw_random/starfive-trng.c | 397 ++++++++++++++++++ 6 files changed, 480 insertions(+) create mode 100644 Documentation/devicetree/bindings/rng/starfive,jh7110-trng.yaml create mode 100644 drivers/char/hw_random/starfive-trng.c