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: 13104051 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 7F70BC46467 for ; Tue, 17 Jan 2023 01:55:43 +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=g2xQpD47oQDEB3fSU0TjXJHNK2Canh8zkj7hgdDoW4I=; b=HJuXJHRiFqHJG9 T0Pi4GpRxpWBdQ2vb7GZiQ6gsbVElgHKl6aqX7dn8ALhE4N2Q5yecvbYX1VWKuEKm2NCduAjisR/F +XdBv08VR5X3ilpHLxbRT+ST/nz8mGz/GRFd9CHeJ0t5S5x5BjfB9623HR/BNKN3Zp9WM6rvr+Lz2 UPkzEB9OzLTsHCtCit20an24DoUudmgCZuljMOIvUAEurFHxzNPAL79dTUYYQDIj4EszdKFTajLZK pIFEKj7Zt4KjaFv6gaBKxFlOjmXPW78eq1vx/BK4T/Mf6CItiRU0B/U7bm9WGqkCRfU1z9y71oqFM T8M03YUX1s5EgcIqEH6g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pHbCJ-00CZwT-DE; Tue, 17 Jan 2023 01:55:35 +0000 Received: from fd01.gateway.ufhost.com ([61.152.239.71]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pHbCG-00CZu0-0u for linux-riscv@lists.infradead.org; Tue, 17 Jan 2023 01:55:34 +0000 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230116_175532_241884_0BB590F8 X-CRM114-Status: GOOD ( 13.71 ) 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 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