Exynos850 SoC has a dual-role USB controller which can be configured in
USB host role. As it's the only one USB controller on the board, it's
shared between "device" USB connector (micro-USB) and host USB
connectors. The hardware automatically powers on the host related parts
when the micro-USB cable (for device role) is being disconnected. Also,
as U-Boot lacks dynamic USB role switching capability, the only way to
switch the role at the moment is to modify "dr_mode" property in
U-Boot's device tree file here:
dts/upstream/src/arm64/exynos/exynos850-e850-96.dts
This won't affect the dynamic role switching later in Linux kernel, as a
separate (different) device tree blob is provided to the kernel.
Enable the USB host support and corresponding commands to make it
functional in E850-96 board.
Signed-off-by: Sam Protsenko <semen.protse...@linaro.org>
---
configs/e850-96_defconfig | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/configs/e850-96_defconfig b/configs/e850-96_defconfig
index 412c99468f29..d7cd1b4b8ba5 100644
--- a/configs/e850-96_defconfig
+++ b/configs/e850-96_defconfig
@@ -29,6 +29,8 @@ CONFIG_CMD_CLK=y
CONFIG_CMD_DFU=y
CONFIG_CMD_GPT=y
CONFIG_CMD_MMC=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_USB_MASS_STORAGE=y
CONFIG_CMD_EFIDEBUG=y
# CONFIG_CMD_DATE is not set
CONFIG_CMD_RTC=y
@@ -63,6 +65,9 @@ CONFIG_SYSRESET=y
CONFIG_SYSRESET_SYSCON=y
CONFIG_USB=y
CONFIG_DM_USB_GADGET=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_DWC3=y
+CONFIG_USB_XHCI_DWC3_OF_SIMPLE=y
CONFIG_USB_DWC3=y
CONFIG_USB_DWC3_GENERIC=y
CONFIG_USB_GADGET=y
--
2.39.5
