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Thu, 23 Oct 2025 09:01:19 -0700 (PDT) Received: from [192.168.1.29] ([178.197.219.123]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-475c428e9b2sm103977805e9.5.2025.10.23.09.01.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 23 Oct 2025 09:01:19 -0700 (PDT) Message-ID: Date: Thu, 23 Oct 2025 18:01:17 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1] arm64: defconfig: Enable i.MX95 configs for booting and Ethernet To: Marek Vasut , Alexander Stein , Catalin Marinas , Will Deacon , Shawn Guo , Fabio Estevam , Peng Fan , linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, imx@lists.linux.dev, =?UTF-8?Q?Jo=C3=A3o_Paulo_Gon=C3=A7alves?= , =?UTF-8?Q?Jo=C3=A3o_Paulo_Gon=C3=A7alves?= References: <20251023-upstream-imx95-smarc-defconfig-v1-1-62c6e6f5b315@toradex.com> <3381308.aeNJFYEL58@steina-w> <5d042f21-274e-4b69-849a-3342d77942eb@mailbox.org> <00555ed7-1aee-459a-ae60-0242809d7b85@linaro.org> <07aba8d4-533d-40f7-bcd3-548704d7d228@mailbox.org> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzysztof.kozlowski@linaro.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251023_090121_998648_018D43B5 X-CRM114-Status: GOOD ( 18.09 ) 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 On 23/10/2025 17:53, Marek Vasut wrote: > On 10/23/25 5:32 PM, Krzysztof Kozlowski wrote: >> On 23/10/2025 17:27, Marek Vasut wrote: >>> On 10/23/25 5:22 PM, Krzysztof Kozlowski wrote: >>>> On 23/10/2025 16:03, Alexander Stein wrote: >>>>> Hi, >>>>> >>>>> Am Donnerstag, 23. Oktober 2025, 14:19:15 CEST schrieb João Paulo Gonçalves: >>>>>> From: João Paulo Gonçalves >>>>>> >>>>>> Enable the necessary missing configs for the i.MX95 to boot and also >>>>>> have Ethernet working: >>>>>> >>>>>> * CONFIG_NXP_ENETC4 for the network controller driver >>>>>> * CONFIG_NXP_NETC_BLK_CTRL for the NETC hardware domain controller >>>>>> * CONFIG_PINCTRL_IMX_SCMI for the pinctrl driver >>>>>> * CONFIG_CLK_IMX95_BLK_CTL for the shared hardware domain controller >>>>>> >>>>>> Signed-off-by: João Paulo Gonçalves >>>>>> --- >>>>>> arch/arm64/configs/defconfig | 4 ++++ >>>>>> 1 file changed, 4 insertions(+) >>>>>> >>>>>> diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig >>>>>> index e3a2d37bd10423b028f59dc40d6e8ee1c610d6b8..787d3ae3f5afeac486a905e0943e7b0e1dcee3a9 100644 >>>>>> --- a/arch/arm64/configs/defconfig >>>>>> +++ b/arch/arm64/configs/defconfig >>>>>> @@ -354,8 +354,10 @@ CONFIG_FSL_FMAN=y >>>>>> CONFIG_FSL_DPAA_ETH=y >>>>>> CONFIG_FSL_DPAA2_ETH=y >>>>>> CONFIG_FSL_ENETC=y >>>>>> +CONFIG_NXP_ENETC4=m >>>>>> CONFIG_FSL_ENETC_VF=y >>>>>> CONFIG_FSL_ENETC_QOS=y >>>>>> +CONFIG_NXP_NETC_BLK_CTRL=m >>>>> >>>>> Are you sure this should be module? Shouldn't NFS boot be supported by >>>>> default? I might be wring here though. >>>> >>>> >>>> NFS root is supported already with this being module. Yes, it must be a >>>> module, cannot be built in. >>> It seems I am using it as built-in on MX95 Verdin (patch is posted on >>> the ML), and yes, I do boot from NFS root without any initrd/initramfs. >>> It has to be built-in for that use case to work. >> >> >> Every arm64 platform is supposed to use initramfs and we already use all >> over the place. > > Shouldn't the platform also be at least bootable with the defconfig ? If > yes, then initramfs is a mandatory requirement for a NFS root boot (not > a ... supposed to ... optional one), which does not seem to be the case > until now. It always was a requirement, nothing new here. > > I would argue the ethernet MAC support should be built-in to achieve > maximum utility with the defconfig. No, you missed my earlier point - all decent platforms already use initramfs since it is really not complicated. Best regards, Krzysztof