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Groups > linux.kernel > #1223410
| From | Robert Jarzmik <robert.jarzmik@free.fr> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] ARM: pxa: fix DFI bus lockups on startup |
| Date | 2015-09-12 15:20 +0200 |
| Message-ID | <q7SSK-1yW-3@gated-at.bofh.it> (permalink) |
| References | <q0IYa-1r5-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Robert Jarzmik <robert.jarzmik@free.fr> writes: > After the conversion of pxa architecture to common clock framework, the > NAND clock can be disabled on startup if no nand driver claims it. > > In this case, it happens that if the bootloader used the NAND and set > the DFI arbitration bit, the next access to a static memory controller > area, such as an ethernet card, the system bus will stall, and the core > will be stalled forever. > > Fix this by clearing the DFI arbritration bit in pxa3xx startup. The bit > will be enabled the pxa3xx-nand driver on need anyway. The only left > requirement is that upon pxa3xx-nand removal, the bit should be cleared > before the clock is disabled. > > Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Queued to pxa/fixes. -- Robert -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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Re: [PATCH] ARM: pxa: fix DFI bus lockups on startup Robert Jarzmik <robert.jarzmik@free.fr> - 2015-09-12 15:20 +0200
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