From patchwork Mon Oct 28 10:54:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Francesco Dolcini X-Patchwork-Id: 839303 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 DEBDA1DC1B2; Mon, 28 Oct 2024 10:54:30 +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=1730112873; cv=none; b=CtvTEtT3W5NB3O5AYwYFbKRFIcf/68i0mYNujPd99foP/37mU1x8U0/fC7JScN3B5pFriNAMri4wdhIE3TF+FjpqrQNwQso2qGwUTkznqT+D6ogJe+gpn/Ciktd9OmlPmOGAVZQKiuIt0klAMhne6ElxdDIUkJQUzfC4FvgmrXI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730112873; c=relaxed/simple; bh=WWM5j4iyr5uf9zwNqp3cN4Hkp2o454JK/QH2zlUNTck=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=c8zr6+8f69Zo2Q+C/3IB6sVxa8ibqzF1A2jO+NqGSvpwx2IPrImD8KWAjHZB6A8etZBDZAgaaMFwp8BlMLVAhtZjvNrMq51wikJifw9gr6Th4udHiNPX+T1QWyUSqKBLaVVcwcsIXpWz4n0bPfmVn0+Bge5V+bMJEC6Gd4Egpuw= 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=tUI/dh5U; 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="tUI/dh5U" 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 621741F935; Mon, 28 Oct 2024 11:54:22 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1730112862; bh=Lh7fePJXXUmxKfVX2o4rq/UZ/vQBYBldJd5mNKxr/A4=; h=From:To:Subject; b=tUI/dh5UrbTqI2w3m+gLhHOZd859Cft13v5ayaFkLG1GfnG3el/n/axi81YVHqjOy xio154WS2x1vP57HxbpUNcSogGVK7qQrpvmDHG/i8WgNRFdaaqEH//Jeowo9qwa91T YicDv8HBKZE3kexeJ83vknWpgsNZgvYE//XRi87tW2kV2h6RfpWgcYaqyNSLv4rJxx RhI0BlNhGB4tpYDl0sUjF1eESatdAsvXIMZcH5V2L+VAxUEVJ4rgcUd6wleqUTpWCd mRD70dwd2xNHH+udP2WGgiFir9QsJ+r/LsmYLGJlI9fyv55OqVbeFnEO/7RlkOko0i rafToiE6WxLEA== 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 v4 2/2] USB: xhci: add support for PWRON active high Date: Mon, 28 Oct 2024 11:54:13 +0100 Message-Id: <20241028105413.146510-3-francesco@dolcini.it> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241028105413.146510-1-francesco@dolcini.it> References: <20241028105413.146510-1-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 --- v4: no changes v3: no changes 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: