[U-Boot] [PATCH 3/3] usb: dwc2: use phys_to_bus/bus_to_phys

Stephen Warren
2015-03-25T02:07:35Z

Use of these APIs is required on the Raspberry Pi. With this change, USB
on RPi1 should be more reliable, and USB on the RPi2 will start working.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
---
We likely should enable use of these functions for mbox, SDHCI, and
LCD display too. However, I haven't validated those yet.
---
drivers/usb/host/dwc2.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c
index 5f4ca7abf7bf..8f7c269dd1a5 100644
--- a/drivers/usb/host/dwc2.c
+++ b/drivers/usb/host/dwc2.c
@@ -9,6 +9,7 @@
#include <errno.h>
#include <usb.h>
#include <malloc.h>
+#include <phys2bus.h>
#include <usbroothubdes.h>
#include <asm/io.h>

@@ -795,7 +796,8 @@ int chunk_msg(struct usb_device *dev, unsigned long pipe, int *pid, int in,
if (!in)
memcpy(aligned_buffer, (char *)buffer + done, len);

- writel((uint32_t)aligned_buffer, &hc_regs->hcdma);
+ writel(phys_to_bus((unsigned long)aligned_buffer),
+ &hc_regs->hcdma);

/* Set host channel enable after all other setup is complete. */
clrsetbits_le32(&hc_regs->hcchar, DWC2_HCCHAR_MULTICNT_MASK |
--
1.9.1