From patchwork Mon Oct 7 09:32:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Francesco Dolcini X-Patchwork-Id: 834921 Received: from mail11.truemail.it (mail11.truemail.it [217.194.8.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5AD9618BC2D; Mon, 7 Oct 2024 09:32:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.194.8.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728293544; cv=none; b=t+PyaEa9iQguhC435t2QuyQ8DN4E9W1q8oSQx201RDi9e8I6PZP+4M/pZckyJXiksxQL1WUsKTZfmCLRTyr37SnzmCwmnOSkioK0AuaE9IFfyrYT6Ssdg9PJf1JslLcBLQTVNHSx1xeszz4929a7A1lb/KOqjch080nyiPdBHG4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728293544; c=relaxed/simple; bh=6u07R4RIZtY2VJTqZEFqHhxEjSJmD31RTu+iKtt9lPw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=cwHKfhV9lBW6wDc5EexSoxILrDbRRtbcOA0t/S6K0Y2RKFNCOSS7Jp0bhNxcCNOE1saO2DUv6IobYqQf8c2rG3DJUaudnMcz8keUYBgzVodH0ye0a6xSBBz8yLKy7CmB/0VBh9ejuaWaR2UOvViNyjMHAbjLZFFfk4vShEYQen4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=dolcini.it; spf=pass smtp.mailfrom=dolcini.it; dkim=pass (2048-bit key) header.d=dolcini.it header.i=@dolcini.it header.b=gudthhh5; arc=none smtp.client-ip=217.194.8.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=dolcini.it Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=dolcini.it Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=dolcini.it header.i=@dolcini.it header.b="gudthhh5" Received: from francesco-nb.pivistrello.it (93-49-2-63.ip317.fastwebnet.it [93.49.2.63]) by mail11.truemail.it (Postfix) with ESMTPA id F3F2E20B33; Mon, 7 Oct 2024 11:32:19 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1728293540; bh=RrIkTi/ymDfvWUGLsl95l01h7JrOaCRIN8ELPQBuWlk=; h=From:To:Subject; b=gudthhh5D4g0eZlVDnzqAeGJ+hIwQyhrOBt+/q5SEtpzcoAvcfYV6n4wM9yiIdVM0 DARMZKtQSl0shN+eEeSkTG742xASL3maQ90KunG//USDrrgj0+ssEnckMvOfrqU7F5 EcWQUBhwFD7bFrnbYushg5HF9fXZoIgxBDM8yRPBDyyoMytx3ZpkJSjeqDlT28gO2M EEKFIoBW2rJoX3s3ElvbVWq7q4gHhnl2r0VW5nG7h5aIDpv5qBOWVuOfrQiWR5PmTX dbVj4CAy17Esugy31oWO4dpwhjtbzDUBfZYyMhkb6R9BMOFEf6cuZBCIvt31cn7nxg 1/u1C8H0DpT1w== From: Francesco Dolcini To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Mathias Nyman , Francesco Dolcini Cc: Parth Pancholi , linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/2] USB: xhci: add support for PWRON active high Date: Mon, 7 Oct 2024 11:32:05 +0200 Message-Id: <20241007093205.27130-3-francesco@dolcini.it> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241007093205.27130-1-francesco@dolcini.it> References: <20241007093205.27130-1-francesco@dolcini.it> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Parth Pancholi Some PCIe-to-USB controllers such as TI's TUSB73x0 3.0 xHCI host controller supports controlling the PWRONx polarity via the USB control register (E0h). Add support for device tree property ti,tusb7320-pwron-active-high which indicates PWRONx to be active high and configure the E0h register accordingly. This enables the software control for the TUSB73x0's PWRONx outputs with an inverted polarity from the default configuration which could be used as USB EN signals for the other hubs or devices. Signed-off-by: Parth Pancholi Signed-off-by: Francesco Dolcini --- v2: s/polarity-invert/active-high --- drivers/usb/host/xhci-pci.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 91dccd25a551..4bdef01735eb 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -641,6 +641,9 @@ int xhci_pci_common_probe(struct pci_dev *dev, const struct pci_device_id *id) dma_set_max_seg_size(&dev->dev, UINT_MAX); + if (device_property_read_bool(&dev->dev, "ti,tusb7320-pwron-active-high")) + pci_clear_and_set_config_dword(dev, 0xE0, 0, 1 << 22); + return 0; put_usb3_hcd: