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: 640735 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4AD11C5479D for ; Mon, 9 Jan 2023 16:53:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236528AbjAIQxz convert rfc822-to-8bit (ORCPT ); Mon, 9 Jan 2023 11:53:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237351AbjAIQxg (ORCPT ); Mon, 9 Jan 2023 11:53:36 -0500 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 718573F137; Mon, 9 Jan 2023 08:53:02 -0800 (PST) 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 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.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