From patchwork Mon Jan 9 16:52:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jia Jie Ho X-Patchwork-Id: 13093846 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 A15D5C677F1 for ; Mon, 9 Jan 2023 16:54:10 +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=4OVeEi+WrpXFw2TleXafCYI5ATdHPtgTvB+28Uk7Sm4=; b=OhWvm4SQyhG2XB MxhsmpmdSc/X2EE2BVIBGlg1IheFbJr5rAkivnyCV8tMblEc6achReUvDY0zu7DUlLJncVPLjWhQe 6QZDqL5DII4gGCIJD/7yPdz49M0BTNn8zp+u4dCczvrDZK0lDR4tlD7cMVgDyT9wlhCdJ8sEc8uSJ 4O0efcAhkG8YzW8VuVC+KFMbtH1Kzh9mqN4WA400KRWU+xNJMskKHDlnbGNh7GPXCjOdj/DMXRJD+ KwesiPEy2ZZtgYSBS7M3VlrU6udYEr23tn/9w44oyrIvHyWkt+lDrNzfPQkZ9Vw+luSPcraRYPMzX sYcA0uH5aCu35Ws1zjnw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pEvPA-002i3U-NM; Mon, 09 Jan 2023 16:53:48 +0000 Received: from ex01.ufhost.com ([61.152.239.75]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pEvP2-002hqr-Ap for linux-riscv@lists.infradead.org; Mon, 09 Jan 2023 16:53:45 +0000 Received: from EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id 4206524DFFD; Tue, 10 Jan 2023 00:52:59 +0800 (CST) Received: from EXMBX168.cuchost.com (172.16.6.78) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Tue, 10 Jan 2023 00:52:59 +0800 Received: from ubuntu.localdomain (202.190.108.220) by EXMBX168.cuchost.com (172.16.6.78) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Tue, 10 Jan 2023 00:52:53 +0800 From: Jia Jie Ho To: Olivia Mackall , Herbert Xu , Rob Herring , "Krzysztof Kozlowski" , Emil Renner Berthing , Conor Dooley CC: , , , Subject: [PATCH v3 0/3] hwrng: starfive: Add driver for TRNG module Date: Tue, 10 Jan 2023 00:52:46 +0800 Message-ID: <20230109165249.110279-1-jiajie.ho@starfivetech.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [202.190.108.220] X-ClientProxiedBy: EXCAS064.cuchost.com (172.16.6.24) To EXMBX168.cuchost.com (172.16.6.78) X-YovoleRuleAgent: yovoleflag X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230109_085340_749921_6189732C X-CRM114-Status: GOOD ( 12.15 ) 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: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org This patch series adds kernel support for StarFive hardware random number generator. First 2 patches add bindings docs and device driver for this module. Patch 3 adds devicetree entry for VisionFive v2 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/ 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 | 395 ++++++++++++++++++ 6 files changed, 478 insertions(+) create mode 100644 Documentation/devicetree/bindings/rng/starfive,jh7110-trng.yaml create mode 100644 drivers/char/hw_random/starfive-trng.c