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Tue, 19 May 2020 21:26:16 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Matt Mackall , Herbert Xu , Arnd Bergmann , Greg Kroah-Hartman , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, Kukjin Kim , Krzysztof Kozlowski , Florian Fainelli , Markus Elfring , Matthias Brugger , Stefan Wahren , linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, Stephan Mueller Cc: Bartlomiej Zolnierkiewicz , =?utf-8?q?=C5=81uk?= =?utf-8?q?asz_Stelmach?= Subject: [PATCH v2 0/2] Set the quality value for two HW RNGs Date: Tue, 19 May 2020 23:25:50 +0200 Message-Id: <20200519212552.11671-1-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200514190734.32746-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA02Se0hTYRjG+3bOzjla0+OSejFLGmkYZXazD+xexOkfsaKgQGu107p4Y0vt AhmTNJdupUQ1lbZUZsvrZitFU5ZpWamRZdFlXRaWZVgatnWfx6j/fu/7Pc/zfQ98DCHNooKY PUn7eVWSPEFG+ZL2NnfnHHdMa3ykpi8S/8hvo3Ht2Woxrsy7QeKuHDOBPR9baZxZUk3hE/3B WP/6PYG7umpo/NhRjrD19UMxdj53i/D9hiIKn+26JsLGApcYG+06hN+cs1H44yUXwqdvV5K4 /WYOsSKQ++bJR5zBeZfiPvf0iLh6wzOaK7E2U5y9JZSzWnIorrm4guZspRmcrs6CON27GsRV 1z0gOU1Htpgbsk6L9dvqu0TBJ+xJ41Vzl2333X3PXECnZIkPWM1PyKMom9QihgF2Idw5ptQi X0bKliNwtZURwjCMwK1z0Frk82cYQpCZu+mvwfaJEzRmBIXuEloY+hCY7CaR10CxK0FfdlPs 5UC2SgwjZbyXCTYdjr10je4nskvB9sqEvEyyodA06BhlCRsNec/clJeBDYFs85VR9mGXQO9b j0jQBMCtcy7Sy/7sLKjQ9JJCfghkXi4cbQBsNwPGERMhBK2BHJ1mLHQi9LfX0QIHw6/68yKh WQYU5EcJ3lwE9qKvpKCJhqedHsqrIdhwqG6YK6xXQqlFP2b1g0cDAcIT/CDffoYQ1hI4niUV 1DOgSt84FhgEef3l6CSSGf4rY/ivgOHfXUZEWNBkPlWdqOTV85P49Ai1PFGdmqSM2JmcaEV/ fuftn+3DV1HD9x0OxDJINkES2Xg9XiqWp6kPJjoQMIQsUHLyrSNeKlHIDx7iVcnbVKkJvNqB pjCkbLJkwYV3cVJWKd/P7+P5FF7191TE+AQdRYe3KAJP3SEWaQecMfhi2pueCVPHj3v+wrn4 iEJlLptWGZWwPiRuqLn2Rea+l0u7i8M29yyOcPetuYGDp5fSXKs+/QPBOK2Wtf57lU19w++b TS21G2aGbWlctGtgVUd2bCxet7oxxEPvaunP7axq3zpbYbRtXP5Fq+mYVBzeGlU+KCPVu+Xz ZhEqtfw3JclJQJkDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprBKsWRmVeSWpSXmKPExsVy+t/xu7o//I7EGeycbmPxd9IxdouNM9az WqztPcpicb5zObPFr3dH2C2aF69ns+h+JWPR//g1s8X58xvYLW4eWsFosenxNVaL+/d+Mllc 3jWHzWLG+X1MFgsmP2G1WLCtj9Hi6czNbBbvVj9htJh6ei2LxfETncwOIh6/f01i9Jh1/yyb x6crV5g8ds66y+6xeNN+No9tB1Q9Nq3qZPPYP3cNu8fmJfUefVtWMXr0vdzA6LF+y1UWj6ZT 7awenzfJBfBF6dkU5ZeWpCpk5BeX2CpFG1oY6RlaWugZmVjqGRqbx1oZmSrp29mkpOZklqUW 6dsl6GVcXD6ZvaCNtWLT8tssDYztLF2MHBwSAiYSmz96dDFycQgJLGWU2L/xGyNEXEpi5dz0 LkZOIFNY4s+1LjYQW0jgKaPE6++yIDabgKNE/9ITrCC9IgJ7WCV23+hkAkkwC5RLtD58wgpi CwvYSmx+tJARxGYRUJXY++EQmM0rYC3Re/cnG8QCeYn25dvBbE4BG4nrL34xQSyzlrjzZS4r RL2gxMmZT8BuZhZQl1g/TwgkzC+gJbGm6ToLxFp5ieats5knMArNQtIxC6FjFpKqBYzMqxhF UkuLc9Nziw31ihNzi0vz0vWS83M3MQJTxbZjPzfvYLy0MfgQowAHoxIPr8Gew3FCrIllxZW5 hxglOJiVRHgnvDgUJ8SbklhZlVqUH19UmpNafIjRFOjNicxSosn5wDSWVxJvaGpobmFpaG5s bmxmoSTO2yFwMEZIID2xJDU7NbUgtQimj4mDU6qBsSH2fXJgdk2TwvTAi483rZwp9crpHGOg OEOfofxJyZn6vum/NeY37wtb/7LjDhPTcfVvSnY+6zUM/a5fTfuxkW1CqutGnV4rvyU+qx4v fn87XeK2gW6U7ikHwc5Jio0rzlzQvd8pO/ninl1WyydJn7qtx79k0qvsd99+Tq0weMMfvTvH 93hkhBJLcUaioRZzUXEiACOC+cArAwAA X-CMS-MailID: 20200519212617eucas1p1b6e7af0ecb894896b165601fafd6abe8 X-Msg-Generator: CA X-RootMTR: 20200519212617eucas1p1b6e7af0ecb894896b165601fafd6abe8 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200519212617eucas1p1b6e7af0ecb894896b165601fafd6abe8 References: <20200514190734.32746-1-l.stelmach@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org The rng structure contains the quality field which tells how many bits of entropy can be obtained from 1024 bits read from a device. With the quality value set the hw_random framework starts a kernel thread to feed the entropy pool in the CRNG, which helps to initialize it quickly especially during boot. Łukasz Stelmach (2): hwrng: iproc-rng200 - Set the quality value hwrng: exynos - Set the quality value drivers/char/hw_random/exynos-trng.c | 1 + drivers/char/hw_random/iproc-rng200.c | 1 + 2 files changed, 2 insertions(+) v2: - recalculated values using the SP800-90B_EntropyAssessment package