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From: Felipe Balbi <balbi@kernel.org>
To: Grygorii Strashko <grygorii.strashko@ti.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-arm-kernel@lists.infradead.org, linux-usb@vger.kernel.org,
        linux-kernel@vger.kernel.org, Sekhar Nori <nsekhar@ti.com>,
        Grygorii Strashko <grygorii.strashko@ti.com>,
        David Fisher <david.fisher1@synopsys.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        "Thang Q. Nguyen" <tqnguyen@apm.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Subject: Re: [PATCH] usb: dwc3: host: inherit dma configuration from parent dev
In-Reply-To: <1461612094-30939-1-git-send-email-grygorii.strashko@ti.com>
References: <1461612094-30939-1-git-send-email-grygorii.strashko@ti.com>
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Date: Tue, 26 Apr 2016 09:17:22 +0300
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Hi,

Grygorii Strashko <grygorii.strashko@ti.com> writes:
> Now not all DMA paremters configured properly for "xhci-hcd" platform
> device which is created manually. For example: dma_pfn_offset, dam_ops
> and iommu configuration will not corresponds "dwc3" devices
> configuration. As result, this will cause problems like wrong DMA
> addresses translation on platforms with LPAE enabled like Keystone 2.
>
> When platform is using DT boot mode the DMA configuration will be
> parsed and applied from DT, so, to fix this issue, reuse
> of_dma_configure() API and retrieve DMA configuartion for "xhci-hcd"
> from DWC3 device node.

patch is incomplete. You left out non-DT users which might suffer from
the same problem.

=2D-=20
balbi

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