linux-kernel - Re: [PATCH v2] ARM: dts: am33xx: Fix MMCHS0 dma properties

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Message-ID: <CAHRgzyOsxaC2HM=xAMxFUadTEdTBk-yiMjC=-Y=UynoiULSXDw@mail.gmail.com>
Date:   Fri, 1 Jul 2022 14:04:01 +0800
From:   Yu-Tung Chang <mtwget@...il.com>
To:     Tony Lindgren <tony@...mide.com>
Cc:     Benoit Cousson <bcousson@...libre.com>, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-omap@...r.kernel.org,
        devicetree@...r.kernel.org,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] ARM: dts: am33xx: Fix MMCHS0 dma properties

Tony Lindgren <tony@...mide.com> 于2022年6月27日周一 18:54写道：

>
> Hi,
>
> * YuTong Chang <mtwget@...il.com> [220620 15:36]:
> > According to technical manual(table 11-24), the DMA of MMCHS0 should be
> > direct mapped.
>
> Could this be a bug in the manual assuming mmchs0 is working? Or does this
> fix something for you?
>
It modified in commit b5e5090660742c838ddc0b5d1a001e6fe3d5bfd5,
the dma of mmc1 was changed to edma_xbar and did not explain why it should
not match the document.
> Regards,
>
> Tony