From patchwork Tue Jan 17 01:54:42 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: 13104048 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 6801BC678D4 for ; Tue, 17 Jan 2023 01:55:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233856AbjAQBzI convert rfc822-to-8bit (ORCPT ); Mon, 16 Jan 2023 20:55:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48830 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233599AbjAQBzG (ORCPT ); Mon, 16 Jan 2023 20:55:06 -0500 Received: from fd01.gateway.ufhost.com (fd01.gateway.ufhost.com [61.152.239.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D88A9274B9; Mon, 16 Jan 2023 17:55:03 -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 fd01.gateway.ufhost.com (Postfix) with ESMTP id ED3CB24E00A; Tue, 17 Jan 2023 09:54:55 +0800 (CST) Received: from EXMBX068.cuchost.com (172.16.6.68) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Tue, 17 Jan 2023 09:54:56 +0800 Received: from ubuntu.localdomain (202.190.108.220) by EXMBX068.cuchost.com (172.16.6.68) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Tue, 17 Jan 2023 09:54:49 +0800 From: Jia Jie Ho To: Olivia Mackall , Herbert Xu , Rob Herring , "Krzysztof Kozlowski" , Emil Renner Berthing , Conor Dooley CC: , , , Subject: [PATCH v5 0/3] hwrng: starfive: Add driver for TRNG module Date: Tue, 17 Jan 2023 09:54:42 +0800 Message-ID: <20230117015445.32500-1-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: EXCAS061.cuchost.com (172.16.6.21) To EXMBX068.cuchost.com (172.16.6.68) X-YovoleRuleAgent: yovoleflag Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org This patch series adds kernel support for StarFive JH7110 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 v4->v5: - Updated status in MAINTAINERS. (Conor) - Specified targeted device in Kconfig title and descriptions. (Conor) - Removed unnecessary goto label in patch 2. (Conor) - Enable runtime PM before registering hwrng in patch 2. (Conor) Changes v3->v4: - Moved init_completion before IRQ registration to be prepared for spurious interrupts. (Herbert) - Added locks to guard concurrent write to the same register. (Herbert) Changes v2->v3: - Use constant usecs and convert to jiffies. (Herbert) - Removed sleep in irq handler. (Herbert) - Limited wait time to 40us if wait == 0 for trng read. (Herbert) Changes v1->v2: - Updated of_match_ptr and added pm_sleep_ptr. (Krzysztof) - Dropped "status" in dts as module is always on. (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/jh7110-trng.c | 393 ++++++++++++++++++ 6 files changed, 476 insertions(+) create mode 100644 Documentation/devicetree/bindings/rng/starfive,jh7110-trng.yaml create mode 100644 drivers/char/hw_random/jh7110-trng.c