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From: Christoph Hellwig <hch@infradead.org>
To: Vadym Kochan <vadym.kochan@plvision.eu>
Cc: Robin Murphy <robin.murphy@arm.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Christoph Hellwig <hch@infradead.org>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Hu Ziji <huziji@marvell.com>,
	Ulf Hansson <ulf.hansson@linaro.org>,
	linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
	Elad Nachman <enachman@marvell.com>,
	iommu@lists.linux.dev, Mickey Rachamim <mickeyr@marvell.com>
Subject: Re: [PATCH] mmc: sdhci-xenon: Fix 2G limitation on AC5 SoC
Date: Sat, 20 Aug 2022 23:17:44 -0700	[thread overview]
Message-ID: <YwHOCHmKaf7yfgOD@infradead.org> (raw)
In-Reply-To: <20220818120740.GA21548@plvision.eu>

On Thu, Aug 18, 2022 at 03:07:40PM +0300, Vadym Kochan wrote:
> It works with the following changes:
> 
>     #1 dma-ranges = <0x0 0x0 0x2 0x0 0x0 0x80000000>;
> 
>     #3 swiotlb="force"
> 
> Is it OK to force the memory allocation from the start for the swiotlb ?

It should be ok, but isn't really optimal.

I wonder if we should just allow DT to specify the swiotlb buffer
location.  Basically have yet another RESERVEDMEM_OF_DECLARE variant
for it, which shouldn't be all that much work except for figuring
out the interaction with the various kernel command line options.

  reply	other threads:[~2022-08-21  6:17 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-26 17:07 [PATCH] mmc: sdhci-xenon: Fix 2G limitation on AC5 SoC Vadym Kochan
2022-07-26 17:37 ` Florian Fainelli
2022-07-27 16:45   ` Vadym Kochan
2022-08-01  9:30     ` Vadym Kochan
2022-08-08  9:19       ` Adrian Hunter
2022-08-08  9:52         ` Vadym Kochan
2022-08-08 10:29           ` Vadym Kochan
2022-08-08 11:40           ` Adrian Hunter
2022-08-08 12:26             ` Vadym Kochan
2022-08-08 12:58               ` Adrian Hunter
2022-08-08 14:06                 ` Robin Murphy
2022-08-16 20:51                   ` Vadym Kochan
2022-08-17 13:43                     ` Robin Murphy
2022-08-17 16:07                       ` Vadym Kochan
2022-08-17 17:23                         ` Robin Murphy
2022-08-18 12:07                           ` Vadym Kochan
2022-08-21  6:17                             ` Christoph Hellwig [this message]
2022-08-22 10:06                               ` Robin Murphy
2022-09-06  9:22                                 ` Vadym Kochan
2022-10-13  6:40                                 ` Vadym Kochan
2022-11-08 19:05                                   ` Vadym Kochan
2022-11-09  7:50                                     ` Adrian Hunter
2022-11-09  8:40                                       ` Vadym Kochan
2022-11-09  9:29                                         ` Adrian Hunter

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