[U-Boot] [PATCH] board: stm32mp1: fixup the usb product id for USB download gadget

[Patrick Delaunay]

Select the correct USB product id used by the download gadget
for ST stm32mp1 boards.

The board stm32mp1 select the correct product id, as defined in
http://www.linux-usb.org/usb.ids for the STMicroelectronics
vendor id = 0x0483 (CONFIG_USB_GADGET_VENDOR_NUM):
- dfu = 0xdf11 : STM Device in DFU mode
  it is the value used by ROM code and reused for stm32prog
  command
- fasboot = 0x0afb : Android Fastboot device
- others = 0x5720 (CONFIG_USB_GADGET_PRODUCT_NUM)
  Mass Storage Device
  it is used for UMS command / usb_dnl_ums

This patch avoid conflict when the same USB VID/PID is used for
ums, fastboot or dfu command (two different protocols associated
to the same PID).

Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---

 board/st/stm32mp1/stm32mp1.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index 18f9b84876..126af30173 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -233,6 +233,23 @@ int g_dnl_board_usb_cable_connected(void)
 
 	return dwc2_udc_B_session_valid(dwc2_udc_otg);
 }
+
+#define STM32MP1_G_DNL_DFU_PRODUCT_NUM 0xdf11
+#define STM32MP1_G_DNL_FASTBOOT_PRODUCT_NUM 0x0afb
+
+int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
+{
+	if (!strcmp(name, "usb_dnl_dfu"))
+		put_unaligned(STM32MP1_G_DNL_DFU_PRODUCT_NUM, &dev->idProduct);
+	else if (!strcmp(name, "usb_dnl_fastboot"))
+		put_unaligned(STM32MP1_G_DNL_FASTBOOT_PRODUCT_NUM,
+			      &dev->idProduct);
+	else
+		put_unaligned(CONFIG_USB_GADGET_PRODUCT_NUM, &dev->idProduct);
+
+	return 0;
+}
+
 #endif /* CONFIG_USB_GADGET */
 
 #ifdef CONFIG_LED
-- 
2.17.1