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[83.11.10.28]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-2ffdfbef7a3sm12397121fa.45.2024.12.02.02.40.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Dec 2024 02:40:04 -0800 (PST) Message-ID: Date: Mon, 2 Dec 2024 11:40:01 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: rockchip: enable rng on all rk356x To: Dragan Simic , Peter Robinson Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org References: <20241201234613.52322-1-pbrobinson@gmail.com> <302bdae2f4defeefe88ea4018a0be11f@manjaro.org> From: Marcin Juszkiewicz Content-Language: pl-PL, en-GB Organization: Linaro In-Reply-To: <302bdae2f4defeefe88ea4018a0be11f@manjaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241202_024006_800612_C000F68E X-CRM114-Status: GOOD ( 12.40 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org W dniu 2.12.2024 o 04:55, Dragan Simic pisze: > On 2024-12-02 00:46, Peter Robinson wrote: >> The rk356x rng is available on both the rk3566 and rk3568 >> parts, the IP is all self contained within the SoCs so >> it's enabled already by default on rk3568 so let's enable >> it in the base rk356x.dtsi so it's enabled consistently >> everywhere. > > Please, go through the mailing list threads [1][2] that have led us > to the current state. To sum it up, it isn't about what's supported > in the two RK356x SoC variants, but about the RK3566's HWRNG being > disabled because the testing showed that it produces unacceptably > low quality of random data, for some yet unknown reason. So maybe there should be a comment in rockchip/rk3568.dtsi so we would not get back to it again.