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[82.67.6.57]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49cee6023edsm67989285e9.7.2026.09.03.05.58.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Sep 2026 05:58:48 -0700 (PDT) From: Jerome Brunet To: tanure@linux.com, Neil Armstrong Cc: Kevin Hilman , Martin Blumenstingl , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Stephen Boyd , Jian Hu , Ronald Claveau , Brian Masney , Chuan Liu , linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org Subject: Re: (subset) [PATCH 0/4] arm64: amlogic: t7: describe the VIM4 supplies and keep the fabric clocks running In-Reply-To: References: <20260829094758.23248-1-tanure@linux.com> <178818026093.2318126.3676223463693214854.b4-ty@b4> Date: Thu, 03 Sep 2026 14:58:47 +0200 Message-ID: <1jecfa8pa0.fsf@starbuckisacylon.baylibre.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On jeu. 03 sept. 2026 at 11:05, Lucas Tanure wrote: > On Mon, Aug 31, 2026 at 1:44=E2=80=AFPM Neil Armstrong > wrote: >> >> Hi, >> >> On Sat, 29 Aug 2026 10:47:54 +0100, Lucas Tanure wrote: >> > The Khadas VIM4 has needed clk_ignore_unused to boot reliably. Without= it >> > the board hangs at random, loses storage and corrupts memory, and the >> > failures move around from boot to boot. >> > >> > Six of the SoC's PWM outputs drive the board's voltage regulators: the >> > always-on domain, both CPU clusters, the GPU, the NPU and the DRAM. No= ne >> > of them were described, so Linux saw the outputs as unused and switched >> > them off about a second into boot. The regulators then drifted away fr= om >> > the levels the bootloader had set, which is where the corruption and t= he >> > random hangs came from. >> > Thanks to Chuan Liu from Amlogic for helping me indetify which clocks = are >> > critical. >> > >> > [...] >> >> Thanks, Applied to https://git.kernel.org/pub/scm/linux/kernel/git/amlog= ic/linux.git (v7.3/fixes) >> >> [2/4] arm64: dts: amlogic: t7: fix the pin groups of two PWM outputs >> https://git.kernel.org/amlogic/c/ae7be5c58a819259e5eb98a3abfa60842= 478f2ae >> [3/4] arm64: dts: amlogic: t7: khadas-vim4: add the PWM-driven supplies >> https://git.kernel.org/amlogic/c/1e5a53bd16ac501e68463e84023d1bff5= 43cc696 >> [4/4] arm64: dts: amlogic: t7: fix the pin groups of the vsync PWM >> https://git.kernel.org/amlogic/c/406292fd75f95aa3010fec95b5beb5a8b= 7e3ba3a >> >> These changes has been applied on the intermediate git tree [1]. >> >> The v7.3/fixes branch will then be sent via a formal Pull Request to the= Linux SoC maintainers >> for inclusion in their intermediate git branches in order to be sent to = Linus during >> the next merge window, or sooner if it's a set of fixes. >> >> In the cases of fixes, those will be merged in the current release candi= date >> kernel and as soon they appear on the Linux master branch they will be >> backported to the previous Stable and Long-Stable kernels [2]. >> >> The intermediate git branches are merged daily in the linux-next tree [3= ], >> people are encouraged testing these pre-release kernels and report issue= s on the >> relevant mailing-lists. >> >> If problems are discovered on those changes, please submit a signed-off-= by revert >> patch followed by a corrective changeset. >> >> [1] https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git >> [2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git >> [3] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git >> >> -- >> Neil >> > Hi, > Please don't take this. I will submit a better version. > sys_ampipe_nand should not be critical. Please submit a fixup change on top of what you've already sent, with the proper 'Fixes:' tag. > > Thanks, > Lucas --=20 Jerome