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Thu, 12 Nov 2026 09:35:35 -0800 (PST) Received: from localhost.localdomain ([188.190.249.216]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-49c5f7828a4sm401037f8f.23.2026.11.12.09.35.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Nov 2026 09:35:35 -0800 (PST) From: Vladyslav Tymoshchuk To: yzddMr6 Cc: Bjorn Andersson , Konrad Dybcio , Abel Vesa , Melody Olvera , Ajay Kumar Nandam , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] soc: qcom: llcc-qcom: Reserve ISLAND1 ways on SM8750 Date: Thu, 12 Nov 2026 19:35:23 +0200 Message-ID: <20261112173523.1474-1-tvlad744@gmail.com> X-Mailer: git-send-email 2.45.1.windows.1 In-Reply-To: <20261111-sm8750-llcc-island1-v1-1-64055702ca3f@gmail.com> References: <20261111-sm8750-llcc-island1-v1-1-64055702ca3f@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Wed, Nov 11, 2026 at 03:21:13PM +0800, yzddMr6 wrote: > With this table, system suspend can reset the SoC once nothing votes > for the LPASS core. On a Xiaomi Pad 8 Pro with the LPASS_HW_MACRO_VOTE > and LPASS_HW_DCODEC_VOTE votes released, 16 suspend attempts (15 with > s2idle, one with PSCI system suspend) ended in a reset. The PMIC PON log > shows only PS_HOLD-triggered resets and no PMIC fault. I tried the patch on another SM8750 tablet, the OnePlus Pad 3, which has what looks like the same symptom: the SoC resets about a minute after s2idle entry, and the PMIC PON log shows a PS_HOLD warm reset followed by a PS_HOLD hard reset. It does not cure the reset here. The tree is v7.3-rc5 with out-of-tree board support, without Ajay's series. Each run is one 60 s s2idle on battery with the USB cable disconnected: this patch, Wi-Fi WoWLAN enabled reset this patch, Wi-Fi WoWLAN disabled reset this patch, rpmhpd domains left at their highest corner (rpmhpd sync_state callback removed) reset no patch, MC0 kept voted in the sleep set resumes The last line is a local workaround in the interconnect driver that keeps a minimal MC0 vote in the sleep bucket. It is the only thing that avoids the reset on this tablet so far, and with it cxsd, aosd and ddr in qcom_stats stay at 0. The first three runs are without it. > Holding LPASS_HW_MACRO_VOTE or LPASS_HW_LPR_VOTE across suspend let one > s2idle cycle each resume, but cxsd did not increase in either case. On this tree the two votes do not seem to be dropped: with all five macro codecs runtime suspended, clk_summary still shows LPASS_HW_MACRO and LPASS_HW_DCODEC with a prepare count of 6 (LPASS_HW_LPR_VOTE is 0). I read that on the workaround kernel while awake, not during suspend, and the codecs have no system sleep callbacks here. So the resets above most likely happened with both votes held, which is the state your tablet resumes in. > All of these suspend tests were done with a USB cable connected. Does your tablet also resume with the cable disconnected? And does your tree leave anything voted on MC0 in the sleep set? I can run other variants here if that is useful. Thanks, Vladyslav