From patchwork Fri Oct 18 10:55:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Francesco Dolcini X-Patchwork-Id: 837025 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 76DA91D7E4C; 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=1729248919; cv=none; b=mjsMW6JJaDNgk7gi8+RI5lP1lQrutXj6+JhPT+fuij0FxvuhSAsI7ha8T4Boew5/dwBdKOQfGvPljX9BPbz76OY+VARZphlQ5ZPtsOwEFOlZp/5TTzoAyDGn3RP/BqLVocYKm0avxY55evxhtJEPifUN8GDq9TW4LRXudL+yrnQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729248919; c=relaxed/simple; bh=dXlcSJAgvLlmp2SbcO9+GbAsPb/hnuby0rypYVZ0vDI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=RcTYQ5PxHblWRrPevVR7yFRGQcZn7XpdqEH0aMJT2A13zCMU69nLuaKgVR/qLPqQBJEWPHjSgMDkgdS1mNRR8Lk1fy54bZe6RloiL4FLSe9J9JTza8Qi5X5EbwQnt/keNACl+KMGRBCXDa0sdpPd0eD3MDD4JsCFXad2HlRRKUE= 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=uskH01RT; 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="uskH01RT" 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 0BC201FAAF; 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=1729248912; bh=RpL7cRHFX05ZvjNV5sS2C29Zp9ge2OM147LKWy4YLsM=; h=From:To:Subject; b=uskH01RTuMuv/c8d7OfFlEum4z0Q9/xT726MJjjbn1MoYrwRJFF67YGIwg0QB/tXI a9BZ1NE6qqninYumkUTXwVv/I05BGfMzTcQrDiY3DcCTe8TwinRFnJfj4yxucm9tBx UmIAXLgRoddmNraHrmkGF49sJ9ODF97caZ9MTLGblpmf3ewjhxZXccJwyHsnyYSmIA Xf7YFtwRsWht2BHmcZbWS+Cc3I4TuFjZEOFACaP1tXtR08KNSyptxMtjrKmYRW52iF OugdYFwmHbrJTPj91HEQEXT2PfSdAaAT7LgqCE1hdjQNsO7GA0Eevfd60ki0cQOVS+ 0zF8vri7IvFNg== 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 1/2] dt-bindings: usb: add TUSB73x0 PCIe Date: Fri, 18 Oct 2024 12:55:04 +0200 Message-Id: <20241018105505.28005-2-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 Add device tree bindings for TI's TUSB73x0 PCIe-to-USB 3.0 xHCI host controller. The controller supports software configuration through PCIe registers, such as controlling the PWRONx polarity via the USB control register (E0h). Similar generic PCIe-based bindings can be found as qcom,ath11k-pci.yaml as an example. Datasheet: https://www.ti.com/lit/ds/symlink/tusb7320.pdf Signed-off-by: Parth Pancholi Signed-off-by: Francesco Dolcini --- v3: use lowercase hex in compatible v2: rename property to ti,tusb7320-pwron-active-high and change type to flag --- .../bindings/usb/ti,tusb73x0-pci.yaml | 60 +++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/ti,tusb73x0-pci.yaml diff --git a/Documentation/devicetree/bindings/usb/ti,tusb73x0-pci.yaml b/Documentation/devicetree/bindings/usb/ti,tusb73x0-pci.yaml new file mode 100644 index 000000000000..7083e24d279c --- /dev/null +++ b/Documentation/devicetree/bindings/usb/ti,tusb73x0-pci.yaml @@ -0,0 +1,60 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/ti,tusb73x0-pci.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TUSB73x0 USB 3.0 xHCI Host Controller (PCIe) + +maintainers: + - Francesco Dolcini + +description: + TUSB73x0 USB 3.0 xHCI Host Controller via PCIe x1 Gen2 interface. + The TUSB7320 supports up to two downstream ports, the TUSB7340 supports up + to four downstream ports. + +properties: + compatible: + const: pci104c,8241 + + reg: + maxItems: 1 + + ti,tusb7320-pwron-active-high: + $ref: /schemas/types.yaml#/definitions/flag + description: + Configure the polarity of the PWRONx# signals. When this is present, the PWRONx# + pins are active high and their internal pull-down resistors are disabled. + When this is absent, the PWRONx# pins are active low (default) and their internal + pull-down resistors are enabled. + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + pcie { + #address-cells = <3>; + #size-cells = <2>; + + pcie@0 { + device_type = "pci"; + reg = <0x0 0x0 0x0 0x0 0x0>; + bus-range = <0x01 0xff>; + + #address-cells = <3>; + #size-cells = <2>; + ranges; + + usb@0 { + compatible = "pci104c,8241"; + reg = <0x10000 0x0 0x0 0x0 0x0>; + + ti,tusb7320-pwron-active-high; + }; + }; + }; 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: