From patchwork Tue Oct 29 07:24:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Francesco Dolcini X-Patchwork-Id: 13854411 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 4751D2022DF; Tue, 29 Oct 2024 07:24:51 +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=1730186695; cv=none; b=Yhus12AoHIlPPf55yKvZsRy8lXK8fma2e7uC7lk0QkuUHBXfHKpmLDHa3UHWTWfCQ+1Po4SIOTVJf15rp6spExfEdp+j1AO4+Hwqsj7g573OYnbxSx5O4nKX2U9nejG/0oIu+AEhYQNMgKh0a4lQKpZLI+qWkhXG8lTFzZv/olI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730186695; c=relaxed/simple; bh=bujN33g16oHNeeyO3ZGbViJYxBOYuYTm+DxN3be+hS4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=YGmZ7Z36nrLF2CmVpNBaS8QfnXFNTWLrkVfhQRAN4It/iTkZfhDEQLR5s2JGKOt7e8IRHIbSbdXnlBSfGjXDUeMXPoBthazFCNooEcFZBXHKPgiSpHdc9yng+c6wOoxELHeGLKpu6kiliu/tV7dOGmePMZ4btLr080kBIfDin0Y= 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=PxiYcBfN; 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="PxiYcBfN" 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 EDDC91FA13; Tue, 29 Oct 2024 08:24:49 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1730186690; bh=y6XwsU0U/5vhJTZLKZbpSfkUbG50QcLapUoV17QlMjw=; h=From:To:Subject; b=PxiYcBfN5S2vXfEE5CaOZ3S/wt/jww6iSYozhth0QP0jxRRQxJFgek6C7my4O14wf jcn5FgjCe7cik5V4cb7b0SPhsKoY9bz254AzsqndPLwC98EQxdwnTKGMII7v24YTbz ixPGNpoIUmDWmwhuIqIU6nca1Ss+FgqhjLWYsuM/B+Orz0z6X8SMMsFke5Pt+hlOWR GuUAMIe+YEhQ2472j3BAejkXMDkrsEbrIurp3ar9Gstk96A+aPY/WKvChjAwCuEFer I+omolGMhgoDD+i57vYLTaKy2o94hIqKiePsOMoPfhHvQdie4j90c3JmgGuezcR40x WV4bknbTrVCIw== 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 v5 2/2] USB: xhci: add support for PWRON active high Date: Tue, 29 Oct 2024 08:24:44 +0100 Message-Id: <20241029072444.8827-3-francesco@dolcini.it> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241029072444.8827-1-francesco@dolcini.it> References: <20241029072444.8827-1-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,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 --- v5:s/ti,tusb7320-pwron-active-high/ti,pwron-active-high/ 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..39456ec268f5 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,pwron-active-high")) + pci_clear_and_set_config_dword(dev, 0xE0, 0, 1 << 22); + return 0; put_usb3_hcd: