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 11556206306; Sun, 24 Mar 2024 23:05:01 +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=1711321501; cv=none; b=at71JNxtLEO4+Eq7zT9oiOU+B1XT2HODn6gVDlUw3LES5sZtSthvyy4hO0YOzcgHMlV75kZDh59mPG3pt/Ip9kOf0pp1YWnNLow92zLpKU9KumD6iRTRcpM7vsyGA76wYqA+bEmi9rIgR10oxlsDKUKptGF+dQFEYemupBuUSUQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711321501; c=relaxed/simple; bh=nuS2DSyb0HoYpvjFVvqmQJZCzRsWtxviE8APCm+LkS4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eUO42B6uw5P/steuRziN+OTEBP0egtatdUcM7C035yJg3K25ciwSbEe1mV5hIx1WKBURwGSAlEIfbMbMNEuvZJ3QYfs8OUGkGSmcXwnyIlDmFIxjjYBgYepiRut2oGYjUrzfkGbjXVLQbGQgs0tUsq/IWehDURn/o0pgQUFAz1U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ddbK77lv; 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="ddbK77lv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E8E2C433C7; Sun, 24 Mar 2024 23:05:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711321500; bh=nuS2DSyb0HoYpvjFVvqmQJZCzRsWtxviE8APCm+LkS4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ddbK77lv5FaFtbH0WK9Mz2DlSo6YReku2VrdWWJPvSd9CWhjoKdsQGRtAN0FHczI2 MeeOGSFk3GYtNVX9pFcpSRqXZ/gNWS8kmVLQutytf7Sxr3rPzlZsSWMl/oAAO9vGU2 t7Smil/APVQpdJiy1W02de7s4hUmYSrKZtqDSd1GsTjBYHBjyD/2RWjS2GThM/243M xO70JEXhL48xFmoTpIehDtID2nzcL7d4HLV75KpN2KcZgZ5JXSX1DF1c5yPUjVHznL F+CBTlBsryx0mARnpUjHtqMsVadxkmY7TGYYuOZlMQZVPcM84Oma/bgxJYadPwPWn4 ZRk8EsQoNkw2w== 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 6.6 226/638] arm64: dts: ti: k3-am62-main: disable usb lpm Date: Sun, 24 Mar 2024 18:54:23 -0400 Message-ID: <20240324230116.1348576-227-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324230116.1348576-1-sashal@kernel.org> References: <20240324230116.1348576-1-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 284b90c94da8a..6d125c86c2d35 100644 --- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi @@ -613,6 +613,8 @@ usb0: usb@31000000 { interrupt-names = "host", "peripheral"; maximum-speed = "high-speed"; dr_mode = "otg"; + snps,usb2-gadget-lpm-disable; + snps,usb2-lpm-disable; }; }; @@ -636,6 +638,8 @@ 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