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dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="nEB6FuFL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D83CFC072AA; Wed, 17 Apr 2024 13:23:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713360238; bh=JSCkvU4mUWsadZRODNiRRuHtCgBOJJNgWumAcR1e2Qo=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=nEB6FuFLc3EhGLKatBirbpvmAA9YKNV5eG7c8EDn1Z0S8rQoObzxrhyjgeszo3i26 CUjq/iQVDgM55Kw8I9XokUt+HocJIpngD97esfUkP++3N8cmNGpeybrwTSPfdErovs ElLZ29dyEBy7sQrtCFg2n3FIj8sthvwb7xar4puCmUwb/yKbxqEO0qTtSYsiFiK68B Avs34Oi9JymMcL9Eb9QQmIumA8lF7/3La7WkR19Cj98YDTxQf4n+48wneZfpqJmuap F2w5E//3hwxTV2GkQ2OrZO/QafkREqOPgY5gZ25Tr5LUyZ6OE33UC2HJ+kd6IekmOW bFaSY2BEMqV7g== Message-ID: Date: Wed, 17 Apr 2024 15:23:57 +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 3/4] ARM: dts: BCM5301X: Add DT for ASUS RT-AC3200 To: =?UTF-8?B?QXLEsW7DpyDDnE5BTA==?= , Florian Fainelli , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Hauke Mehrtens , Rafal Milecki , Broadcom internal kernel review list Cc: Tom Brautaset , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <20240414-for-soc-asus-rt-ac3200-ac5300-v1-0-118c90bae6e5@arinc9.com> <20240414-for-soc-asus-rt-ac3200-ac5300-v1-3-118c90bae6e5@arinc9.com> <85261d11-d6cb-4718-88d9-95a7efe5c0ab@arinc9.com> <335cdd4b-7309-4633-9b4f-6487c72c395c@arinc9.com> <07c9c5f5-c4b9-44d6-b909-5aa306f56898@kernel.org> <00ba4593-d720-419a-a97d-37c402c91e44@arinc9.com> <7b465ddb-2b18-4e7f-8b03-d4e51006e1cb@broadcom.com> <29f098cb-db41-4d4f-9033-a88d70ebdd0f@arinc9.com> Content-Language: en-US From: Krzysztof Kozlowski Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 17/04/2024 10:24, Arınç ÜNAL wrote: > On 17/04/2024 06:15, Florian Fainelli wrote: >> >> >> On 4/15/2024 2:10 AM, Arınç ÜNAL wrote: >>> On 15.04.2024 10:57, Krzysztof Kozlowski wrote: >>>> On 14/04/2024 22:21, Arınç ÜNAL wrote: >>>>> NVRAM is described as both flash device partition and memory mapped NVMEM. >>>>> This platform stores NVRAM on flash but makes it also memory accessible. >>>>> >>>>> As device partitions are described in board DTS, the nvram node must also >>>> >>>> Sorry, but we do not talk about partitions. Partitions are indeed board >>>> property. But the piece of hardware, so NVMEM, is provided by SoC. >>>> >>>>> be defined there as its address and size will be different by board. It has >>>>> been widely described on at least bcm4709 and bcm47094 SoC board DTS files >>>>> here. >>>> >>>> These not proper arguments. What you are saying here is that SoC does no >>>> have nvram at address 0x1c08000. Instead you are saying there some sort >>>> of bus going out of SoC to the board and on the board physically there >>>> is some NVRAM sort of memory attached to this bus. >>> >>> Yes that is the case. NVRAM is stored on a partition on the flash. On the >>> Broadcom NorthStar platform, the NAND flash base is 0x1c000000, the NOR >>> flash base is 0x1e000000. >>> >>> For the board in this patch, the flash is a NAND flash. The NVRAM partition >>> starts at address 0x00080000. Therefore, the NVRAM component's address is >>> 0x1c080000. >> >> Because the flash is memory mapped into the CPU's address space, a separate node was defined since it is not part of the "soc" node which describes the bridge that connects all of the peripherals. >> >> Whether we should create an additional bus node which describes the bridge being used to access the flash devices using the MMIO windows is debatable. Rafal, what do you think? > > Will this block this patch series? If not, I'd like to submit the next > version with Krzysztof's comments on earlycon and stdout-path addressed. Why are you so impatient? The review process takes time and your reluctance to take responsibility for issues here are no helping. Best regards, Krzysztof