Re: [U-Boot] [PATCH v3 6/7] dwc2: Add dcache support

On 07/22/2015 12:23 PM, Alexander Stein wrote:

This adds dcache support for dwc2. The DMA buffers must be DMA aligned and is flushed for outgoing transactions before starting transfer. For ingoing transactions it is invalidated after the transfer has finished.

diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c

/* We need doubleword-aligned buffers for DMA transfers */ -DEFINE_ALIGN_BUFFER(uint8_t, aligned_buffer, DWC2_DATA_BUF_SIZE, 8); -DEFINE_ALIGN_BUFFER(uint8_t, status_buffer, DWC2_STATUS_BUF_SIZE, 8); +DEFINE_ALIGN_BUFFER(uint8_t, aligned_buffer, DWC2_DATA_BUF_SIZE, ARCH_DMA_MINALIGN); +DEFINE_ALIGN_BUFFER(uint8_t, status_buffer, DWC2_STATUS_BUF_SIZE, ARCH_DMA_MINALIGN);

That comment might need updating.