From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0653686655; Sun, 24 Mar 2024 22:51:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711320698; cv=none; b=rrzMyjGSR70wujVuEDuP6iqTSUJoSEUmvhhZgVdjeV2NDa98fUt9VHC8MIqKp2pNezbifTP7UF0SXCK+Jm2D9PeyvLiZErU+mUKCGAJwPUvWK5HIuFJLLX2O2eSJtfPJtYlfJPBv1MuVXfWKi/hmn2pK20+Cv5x4s7FsIEZQUOk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711320698; c=relaxed/simple; bh=eZSo9kCBaG2IU8ylLywZO1b09ydCwcFYWeesUj1vWRM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Gijc6htwH+VyBw6xDGinHpa/xUd/0Nd3c6IxUNDDLP7ofiPCpi7fkfSzbLmwxenxisLqQ/I4tLGe3VnajC3865FVZA/9uDDytIYh9PUn17VRDhS5wwAwNhnGbCDMRyIQ3tahhvmeSzEVhSTEl6awQF8BTtgARkgV9165Zhrkr8I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GEkGP4LW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="GEkGP4LW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 14FF8C433F1; Sun, 24 Mar 2024 22:51:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711320696; bh=eZSo9kCBaG2IU8ylLywZO1b09ydCwcFYWeesUj1vWRM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GEkGP4LW6kj1wYlB7R8TWH6P9xP/NJwdaXLwaItNUW8Hs0ht6aY+h4Do48kI7V0R3 OSzHUp2okU5+IJivDVSsjCRMe9YBpRwH9JLfqywpXDUJTfXEcDdnt2WrrrD0NHOsmn Yj2SFWXEkgYDDu/Isz1vvBXznNd4igqkY/qcyyPXDPYIpUKJF9aBdX4E5rDZk68e14 0QXN3yTG4wi7gNRo+Su1iovRhp7NRqOxZWlUMmp6V2PBu3vTClrAA35ekK/6MkvK6/ XOfmUGo9rY4Q3LedSG7pOG1CDGQk/UwNnSn7P1bhSCVD10iZCA/YPUJBPCCua0/zSW d/Ezh4t1YsTjg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Andrejs Cainikovs , Francesco Dolcini , Roger Quadros , Vignesh Raghavendra , Sasha Levin Subject: [PATCH 6.7 259/713] arm64: dts: ti: k3-am62-main: disable usb lpm Date: Sun, 24 Mar 2024 18:39:45 -0400 Message-ID: <20240324224720.1345309-260-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324224720.1345309-1-sashal@kernel.org> References: <20240324224720.1345309-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Andrejs Cainikovs [ Upstream commit 9c99b337a8755a09df7735d4324ae26a6eca6261 ] AM62 USB works with some devices, while failing to operate with others. [ 560.189822] xhci-hcd xhci-hcd.4.auto: xHCI Host Controller [ 560.195631] xhci-hcd xhci-hcd.4.auto: new USB bus registered, assigned bus number 2 [ 574.388509] xhci-hcd xhci-hcd.4.auto: can't setup: -110 [ 574.393814] xhci-hcd xhci-hcd.4.auto: USB bus 2 deregistered [ 574.399544] xhci-hcd: probe of xhci-hcd.4.auto failed with error -110 This seems to be related to LPM (Link Power Management), and disabling it turns USB into reliable working state. As per AM62 reference manual: > 4.8.2.1 USB2SS Unsupported Features > > The following features are not supported on this family of devices: > ... > - USB 2.0 ECN: Link Power Management (LPM) > ... Fixes: 2240f96cf3cd ("arm64: dts: ti: k3-am62-main: Add support for USB") Signed-off-by: Andrejs Cainikovs Reviewed-by: Francesco Dolcini Reviewed-by: Roger Quadros Link: https://lore.kernel.org/r/20240209130213.38908-1-andrejs.cainikovs@gmail.com Signed-off-by: Vignesh Raghavendra Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi index e5c64c86d1d5a..c1ace4a376d17 100644 --- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi @@ -623,6 +623,8 @@ usb0: usb@31000000 { interrupt-names = "host", "peripheral"; maximum-speed = "high-speed"; dr_mode = "otg"; + snps,usb2-gadget-lpm-disable; + snps,usb2-lpm-disable; }; }; @@ -646,6 +648,8 @@ usb1: usb@31100000 { interrupt-names = "host", "peripheral"; maximum-speed = "high-speed"; dr_mode = "otg"; + snps,usb2-gadget-lpm-disable; + snps,usb2-lpm-disable; }; }; -- 2.43.0