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([2a02:810b:f13:8500:e3:9af7:6c0e:f2a1]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4562e886286sm171024705e9.26.2025.07.21.11.07.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 21 Jul 2025 11:07:45 -0700 (PDT) Message-ID: <6d93c92d-2bba-4247-960d-5f2e5e12b594@gmail.com> Date: Mon, 21 Jul 2025 20:07:44 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 0/6] arm64: dts: rockchip: Add ROCK 2A/2F, Sige1 and NanoPi Zero2 To: Chukun Pan Cc: devicetree@vger.kernel.org, heiko@sntech.de, jonas@kwiboo.se, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, ziyao@disroot.org References: <3c83e8cc-9ef0-4560-b6d7-127abab50541@gmail.com> <20250721140016.308800-1-amadeus@jmu.edu.cn> Content-Language: en-US From: Alex Bee In-Reply-To: <20250721140016.308800-1-amadeus@jmu.edu.cn> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Am 21.07.25 um 16:00 schrieb Chukun Pan: > Hi, > >> I'm not sure where you are getting your information from, but as I told >> before I actually *own* this board in the non-development version and it >> has an RK3528 SoC/silkscreen - I just was too lazy to photograph it my own >> but I did now [0] > I have the MangoPi M28S, M28K and M28C boards. > The M28K board does have a silkscreen of RK3528A. [2] Nope. Are you really questioning my picture? Ridiculous ... see [0] > Regardless of whether the silkscreen is RK3528 or RK3528A, > U-Boot reports that the SoC on these boards is RK3528A. (via OTP [1]) > So one possibility is that Rockchip forgot to update the silkscreen. > > Comparison chip block diagram: > 1. Earlier version: https://docs.armsom.org/img/sige/rk3528.png > 2. Final version: https://docs.radxa.com/img/e/e20c/radxa-e20c-chip-diagram.webp > > The difference seems to be that RK3528 uses I2S while RK3528A uses SAI. > But from the updated diagram here [3], RK3528 also uses the SAI interface. > > Rockchip BSP does not make any distinction between RK3528 and RK3528A, > so it is meaningless to continue to worry about non-A versions. I'm sort of impressed on with which conviction you continue to claim plain wrong things: [1], [2], [3]. I'm fine if upstream decides not to care. But it is and remains wrong to claim that the other version does not exist - otherwise I doubt Rockchip would have gone to the trouble of building the distinction into their SDK AND publishing different datasheets. [0] https://wikidevi.wi-cat.ru/MangoPi_M28K [1] https://github.com/HermanChen/mpp/blob/develop/osal/mpp_soc.c#L957-L982 [2] https://github.com/rockchip-linux/kernel/blob/develop-6.1/drivers/soc/rockchip/rockchip-cpuinfo.c#L212-L218 [3] https://github.com/rockchip-linux/u-boot/commit/89e1f532de7747d2e962644330666fb1b465926b > [1] https://github.com/u-boot/u-boot/blob/master/arch/arm/mach-rockchip/rk3528/rk3528.c#L131 > [2] https://x.com/mangopi_sbc/status/1847851624804602316?t=5hwScxgwCAAid0eCJgrP5w&s=19 > [3] https://x.com/mangopi_sbc/status/1785115827437760769?t=H5PXRDwbjOfBYa7QotjIZw&s=19 > > -- > 2.25.1 >