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Fri, 29 Nov 2019 03:40:45 -0800 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 29 Nov 2019 03:31:23 -0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 29 Nov 2019 19:30:42 +0800 Received: from [172.21.77.33] (172.21.77.33) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 29 Nov 2019 19:30:44 +0800 Message-ID: <1575027046.24848.4.camel@mtkswgap22> Subject: Re: [PATCH v5 3/3] hwrng: add mtk-sec-rng driver From: Neal Liu To: Lars Persson Date: Fri, 29 Nov 2019 19:30:46 +0800 In-Reply-To: References: <1574864578-467-1-git-send-email-neal.liu@mediatek.com> <1574864578-467-4-git-send-email-neal.liu@mediatek.com> X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191129_034052_358308_3A6CEAC4 X-CRM114-Status: GOOD ( 14.00 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , DTML , Herbert Xu , wsd_upstream , Sean Wang , Linux Kernel Mailing List , Rob Herring , Crystal Guo =?UTF-8?Q?=28=E9=83=AD=E6=99=B6=29?= , "linux-crypto@vger.kernel.org" , Matt Mackall , Matthias Brugger , "linux-mediatek@lists.infradead.org" , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Fri, 2019-11-29 at 18:02 +0800, Lars Persson wrote: > Hi Neal, > > On Wed, Nov 27, 2019 at 3:23 PM Neal Liu wrote: > > > > For MediaTek SoCs on ARMv8 with TrustZone enabled, peripherals like > > entropy sources is not accessible from normal world (linux) and > > rather accessible from secure world (ATF/TEE) only. This driver aims > > to provide a generic interface to ATF rng service. > > > > I am working on several SoCs that also will need this kind of driver > to get entropy from Arm trusted firmware. > If you intend to make this a generic interface, please clean up the > references to MediaTek and give it a more generic name. For example > "Arm Trusted Firmware random number driver". > > It will also be helpful if the SMC call number is configurable. > > - Lars Yes, I'm trying to make this to a generic interface. I'll try to make HW/platform related dependency to be configurable and let it more generic. Thanks for your suggestion. > > _______________________________________________ > Linux-mediatek mailing list > Linux-mediatek@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-mediatek _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek