Bug 249231
| Summary: | [PATCH] sdhci: Add DMA support for i.MX | ||||||
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| Product: | Base System | Reporter: | Christian Mauderer <christian.mauderer> | ||||
| Component: | arm | Assignee: | freebsd-arm (Nobody) <freebsd-arm> | ||||
| Status: | New --- | ||||||
| Severity: | Affects Only Me | CC: | christian.mauderer, emaste | ||||
| Priority: | --- | Keywords: | patch | ||||
| Version: | CURRENT | ||||||
| Hardware: | arm | ||||||
| OS: | Any | ||||||
| Attachments: |
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Keyword:
patch
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[patch]
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Created attachment 217869 [details] Patch for adding DMA support to the uSDHCI of the i.MX6ULL. Hello, I added some workarounds to the sdhci and fsl_sdhci driver so that I can enable DMA support for the i.MX6ULL uSDHCI. NXP did something a bit other then other SDHCI controllers. But as far as I can tell, all patches should work with every normal SDHCI controller too and there shouldn't be a big performance impact. Note that I use the FreeBSD SDHCI stack via libbsd in RTEMS. So please be aware that this patch isn't tested directly on a FreeBSD kernel but only in a RTEMS application. Best regards Christian Mauderer