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usb: dwc3: support 64 bit DMA in platform driver
Currently, the dwc3 platform driver does not explicitly ask for a DMA mask. This makes it fall back to the default 32-bit mask which breaks the driver on systems that only have RAM starting above the first 4G like the Apple M1 SoC. Fix this by calling dma_set_mask_and_coherent with a 64bit mask. Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sven Peter <sven@svenpeter.dev> Link: https://lore.kernel.org/r/20210607061751.89752-1-sven@svenpeter.dev Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1545,6 +1545,10 @@ static int dwc3_probe(struct platform_device *pdev)
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dwc3_get_properties(dwc);
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dwc3_get_properties(dwc);
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ret = dma_set_mask_and_coherent(dwc->sysdev, DMA_BIT_MASK(64));
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if (ret)
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return ret;
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dwc->reset = devm_reset_control_array_get_optional_shared(dev);
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dwc->reset = devm_reset_control_array_get_optional_shared(dev);
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if (IS_ERR(dwc->reset))
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if (IS_ERR(dwc->reset))
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return PTR_ERR(dwc->reset);
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return PTR_ERR(dwc->reset);
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