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[144.49.247.26]) by smtp-relay.gmail.com with ESMTPS id 98e67ed59e1d1-3b197c1a3e7sm12693559a91.2.2026.11.15.13.03.09 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 15 Nov 2026 13:03:10 -0800 (PST) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-dy1-f200.google.com with SMTP id 5a478bee46e88-375f0fd31f4so1162894eec.0 for ; Sun, 15 Nov 2026 13:03:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1794776589; x=1795381389; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=pbkTGs7YmlnL0Ccvd7jdso8Elsa8PtZvBDwPld53vBg=; b=gk0lnsvAfYqWUBl/gOh+EmtoTgwo3fodsdsO2GzPSIGsc9j4E6rY9FRTzHGWNmNmK8 /tDdzPe0snOmkw3bKvLI37xjOEsmxTFU826kMzDh1NXTGyTeNsUp3JCHLv2h+Bl0iPzL 3TVArru5jN+X41F0mGZwoTgypp4vJYJeSily8= X-Forwarded-Encrypted: i=1; AL+hErHPdgfyoPqfftTLWit87iJzzpfo2GW91BcID/cV6MEntKPSxVD+gb3fKWxmBrPVhUUW4brXYcHgEIpAbFA=@vger.kernel.org X-Received: by 2002:a05:693c:638d:20b0:375:c862:31c with SMTP id 5a478bee46e88-379684b8190mr8857532eec.40.1794776588830; Sun, 15 Nov 2026 13:03:08 -0800 (PST) X-Received: by 2002:a05:693c:638d:20b0:375:c862:31c with SMTP id 5a478bee46e88-379684b8190mr8857506eec.40.1794776588102; Sun, 15 Nov 2026 13:03:08 -0800 (PST) Received: from bld-bun-02.bun.broadcom.net ([192.19.176.227]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-379565d3e37sm31068797eec.24.2026.11.15.13.03.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 Nov 2026 13:03:07 -0800 (PST) From: Arend van Spriel To: Andre Eikmeyer Cc: linux-wireless@vger.kernel.org, brcm80211@lists.linux.dev, brcm80211-dev-list.pdl@broadcom.com, linux-kernel@vger.kernel.org, Yossef Osman , Aditya Garg , Arend van Spriel Subject: Re: [PATCH] wifi: brcmfmac: use a 200 ms power save timeout by default Date: Sun, 15 Nov 2026 22:02:52 +0100 Message-ID: <20261115210253.883721-4-arend.vanspriel@broadcom.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20261104151626.70737-1-dev@deq.rocks> References: <20261104151626.70737-1-dev@deq.rocks> 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 X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e On Wed, 4 Nov 2026 16:16:26 +0100, Andre Eikmeyer wrote: > cfg80211 calls set_power_mgmt with timeout -1 when userspace leaves the > dynamic power save timeout to the driver, as NetworkManager does. brcmfmac clamps that to BRCMF_PS_MAX_TIMEOUT_MS, so the firmware > stays awake for 2 s after every frame in PM_FAST mode and rarely sleeps > with the background traffic of a typical network. > > Use 200 ms for -1. macOS 15.4.1 sets pm2_sleep_ret to 200 ms on the > BCM4377 of a MacBookAir9,1, seen in a trace of its iovar calls across a > sleep and wake cycle. Measured on a MacBookPro15,1, idle with WLAN > associated: > > pm2_sleep_ret 2000 ms: 11.2 W system power > pm2_sleep_ret 200 ms: 9.2 W > WLAN off: 8.8 W > > Tested-by: Yossef Osman > Tested-by: Aditya Garg > Signed-off-by: Andre Eikmeyer > --- > drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 4 ++++ > 1 file changed, 4 insertions(+) Acked-by: Arend van Spriel Regards, Arend