[0/2] Add a quirk in xhci-plat for parent nodes to specify no 64 bit support

Message ID	20231031044021.1162403-1-mnkumar@google.com
Headers	show Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9D91636A for <linux-usb@vger.kernel.org>; Tue, 31 Oct 2023 04:40:29 +0000 (UTC) Date: Tue, 31 Oct 2023 04:40:19 +0000 Precedence: bulk Mime-Version: 1.0 Message-ID: <20231031044021.1162403-1-mnkumar@google.com> Subject: [PATCH 0/2] Add a quirk in xhci-plat for parent nodes to specify no 64 bit support From: Naveen Kumar <mnkumar@google.com> To: Mathias Nyman <mathias.nyman@intel.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, royluo@google.com, Naveen Kumar M <mnkumar@google.com> Content-Type: text/plain; charset="UTF-8"
Series	Add a quirk in xhci-plat for parent nodes to specify no 64 bit support \| expand [0/2] Add a quirk in xhci-plat for parent nodes to specify no 64 bit support [1/2] usb: host: xhci-plat: Add quirk-no-64-bit-support [2/2] dt-bindings: usb: add no-64-bit-support property

Message ID

20231031044021.1162403-1-mnkumar@google.com

Headers

Date: Tue, 31 Oct 2023 04:40:19 +0000
Precedence: bulk
Mime-Version: 1.0
Message-ID: <20231031044021.1162403-1-mnkumar@google.com>
Subject: [PATCH 0/2] Add a quirk in xhci-plat for parent nodes to specify no
 64 bit support
From: Naveen Kumar <mnkumar@google.com>
To: Mathias Nyman <mathias.nyman@intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
 royluo@google.com,
	Naveen Kumar M <mnkumar@google.com>
Content-Type: text/plain; charset="UTF-8"

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Add a quirk in xhci-plat for parent nodes to specify no 64 bit support | expand

Message

Naveen Kumar Oct. 31, 2023, 4:40 a.m. UTC

From: Naveen Kumar M <mnkumar@google.com>

This patch aims to expose the XHCI_NO_64BIT_SUPPORT flag to the parent
nodes of xhci for clients to specify if they can not support 64 bit DMA
memory pointers. This issue was observed with a Google SoC that uses
a DWC3 controller where the virtual address's higher order bits are
truncated

Naveen Kumar M (2):
  usb: host: xhci-plat: Add quirk-no-64-bit-support
  dt-bindings: usb: add no-64-bit-support property

 Documentation/devicetree/bindings/usb/usb-xhci.yaml | 4 ++++
 drivers/usb/host/xhci-plat.c                        | 3 +++
 2 files changed, 7 insertions(+)