[U-Boot] [PATCH v2 16/16] board: stm32mp1: fixup the usb product id for USB download gadget

Patrick Delaunay
2019-09-30T13:38:32Z

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@st.com>
---

Changes in v2: None

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 6045850c05..4ed2d88849 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -234,6 +234,23 @@ 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