From patchwork Fri Oct 18 10:55:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Francesco Dolcini X-Patchwork-Id: 837026 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 2E47120127B; Fri, 18 Oct 2024 10:55:14 +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=1729248917; cv=none; b=MJ5heBOh15UXBK+OH0tno3uJumbq/W05IqRAjAEbTiNytJL+e9TlDGf34EU9Ow7qEP5DLCZTnzikIaeTFXpSM0TZRC4HstulUMK3kvaG2Q0tBtuobrricJz/x+uysYmHajdgx+cfprZjIZmnIsCZixHMlIZY10m7yUEk9ZYuXVc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729248917; c=relaxed/simple; bh=3RLG839WJ+uQerJG8XDx6MlD4Q2QrL+B6e6HYViYqIM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Zj+OwlPp4NJM+4qYB8lVGRJyZWg2heIYNnVCkj09A2oppZF80RdsoF6jvUIRoaVDwN780ol2w76m6yHRAoV6ufB1D4GYwYHKrgxXZvlnZHBiEFlEHwS3/wlVi7AhflWKAcajqIe3HXX0Atz5rrEaafWwNvArG/cW2YS34gLAmuo= 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=IXFrDYY7; 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="IXFrDYY7" 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 B3D271FAB1; Fri, 18 Oct 2024 12:55:12 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1729248913; bh=0+UVarAfWVCipiZ18p0z4XLpCq8pCStwtFOTwNqFkbI=; h=From:To:Subject; b=IXFrDYY7K0shIMZ34z8Cu4pMZ1YqkLDzYN2qgnJe++oChLCqV93uhqXIF79xY6zHf kHcyYNKVT/TARHZGaf84P+uZWrA+1hmsvSquyIL2D601JYJ2wj04SBlNfgmlZfhq+q JHNgjAsCV8M8MRv6XOCpt1eTxLQdhNdjMZZdrYauCR649mN5scMSwSmNjHVT0aBcF0 t9GlR6HAEr+GWajp8Wjz3x3ROXInn4vr8oALwXQRxxf0iLWdg+wqUksiOdB1YnFTha UEWDtT8J2xN53P6GjkHDGLnIIXbipkXDPQU97bombkbfDGvA/ESYKh36XYroenQZvh Pbrjx3oeQVHGg== 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 v3 2/2] USB: xhci: add support for PWRON active high Date: Fri, 18 Oct 2024 12:55:05 +0200 Message-Id: <20241018105505.28005-3-francesco@dolcini.it> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241018105505.28005-1-francesco@dolcini.it> References: <20241018105505.28005-1-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 --- 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: