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[176.79.113.208]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48e8e62a2desm452865e9.9.2026.05.11.09.51.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 May 2026 09:51:30 -0700 (PDT) Message-ID: Subject: Re: [PATCH] pmdomain: ti_sci: add wakeup constraint to parent devices of wakeup source From: Vitor Soares To: Kendall Willis , Nishanth Menon , Tero Kristo , Santosh Shilimkar , Ulf Hansson , Kevin Hilman , Dhruva Gole Cc: linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, tomi.valkeinen@ideasonboard.com, sebin.francis@ti.com, devarsht@ti.com, vigneshr@ti.com, vishalm@ti.com, vitor.soares@toradex.com Date: Mon, 11 May 2026 17:51:29 +0100 In-Reply-To: <20260506-wkup-constraint-v1-1-0a4bce791b29@ti.com> References: <20260506-wkup-constraint-v1-1-0a4bce791b29@ti.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.44.4-0ubuntu2.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260511_095133_727882_609D1805 X-CRM114-Status: GOOD ( 10.23 ) 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 Hi Kendall, On Wed, 2026-05-06 at 22:16 -0500, Kendall Willis wrote: > Set wakeup constraint for any device in a wakeup path. All parent devices > of a wakeup device should not be turned off during suspend. This ensures > the wakeup device is kept on while the system is suspended. >=20 Thanks for the patch. I tested it on our Verdin AM62P. As expected, suspend now fails cleanly wit= h "- 19" when an SDIO WiFi module is registered as a wakeup source, instead of crashing on resume: ti-sci 44043000.system-controller: PM: failed to suspend: error -19 I did not test the IO daisy chain wakeup path, since that is out of scope f= or this patch. Best regards, Vitor Soares