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[46.134.111.194]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4887a746c57sm7034706f8f.35.2026.09.25.07.32.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Sep 2026 07:32:33 -0700 (PDT) From: Stanislaw Pal To: Bjorn Andersson , Stephen Boyd , Michael Turquette Cc: Gabor Juhos , Konrad Dybcio , Jie Luo , Georg Seema , Mieczyslaw Nalewaj , Brian Masney , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH v4] clk: qcom: ipq-cmn-pll: keep the CMN block bus clocks enabled Date: Fri, 25 Sep 2026 16:32:28 +0200 Message-ID: <20260925143228.386299-1-kuncy7@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260813093351.178419-1-kuncy7@gmail.com> References: <20260813093351.178419-1-kuncy7@gmail.com> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Please drop this patch. Gabor's fix for the same hang has been applied: 33f9cb56cc28 ("clk: qcom: gcc-ipq5018: mark 'gpll0_main' clock as critical") It addresses the platform-level cause: 'gpll0_main' feeds the CPUs through GPLL0 during early boot, before the APCS clock is registered and CCF can see that consumer, so the first driver to drop a runtime PM reference on a GCC clock under it takes the CPUs down with it. The ipq-cmn-pll probe was only the first driver to do so on the AX55 v1; I had verified on that board that Gabor's change alone gives a reliable boot with this patch absent, and OpenWrt has since replaced this patch with his in its tree. That also answers the two open questions here. Jie's suggestion of making the GCC a consumer of the CMN PLL outputs is no longer needed for this hang, and Konrad's question about crashdump mode I cannot answer: I never captured that state, and with the fix in place I have nothing left that reproduces it. Thank you all for the review, and Gabor for finding the actual cause. Best regards, Stanislaw