The omap5 uses the dwc3. The dwc3 supports the driver model but it requires some glue logic to load the the driver.
Signed-off-by: Jean-Jacques Hiblot jjhiblot@ti.com ---
drivers/usb/host/Kconfig | 10 +++++++++ drivers/usb/host/Makefile | 1 + drivers/usb/host/dwc3-omap-glue.c | 47 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 58 insertions(+) create mode 100644 drivers/usb/host/dwc3-omap-glue.c
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index c79f866..82e1db2 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -79,6 +79,16 @@ config USB_XHCI_DRA7XX_INDEX Select the DRA7XX xHCI USB index. Current supported values: 0, 1.
+config USB_DM_XHCI_OMAP + bool "Support for OMAP family on-chip xHCI USB controller (DM version)" + depends on DM_USB + depends on ARCH_OMAP2PLUS + default y if DRA7XX + help + Enables support for the on-chip xHCI controller on TI OMAP family SoCs + using the Driver Model. + This driver provides the glue logic to probe the generic dwc3 driver. + config USB_XHCI_FSL bool "Support for NXP Layerscape on-chip xHCI USB controller" default y if ARCH_LS1021A || FSL_LSCH3 || FSL_LSCH2 diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 79df888..b13a564 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -61,6 +61,7 @@ obj-$(CONFIG_USB_XHCI_OMAP) += xhci-omap.o obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o obj-$(CONFIG_USB_XHCI_RCAR) += xhci-rcar.o obj-$(CONFIG_USB_XHCI_STI) += dwc3-sti-glue.o +obj-$(CONFIG_USB_DM_XHCI_OMAP) += dwc3-omap-glue.o
# designware obj-$(CONFIG_USB_DWC2) += dwc2.o diff --git a/drivers/usb/host/dwc3-omap-glue.c b/drivers/usb/host/dwc3-omap-glue.c new file mode 100644 index 0000000..1110fb6 --- /dev/null +++ b/drivers/usb/host/dwc3-omap-glue.c @@ -0,0 +1,47 @@ +/* + * OMAP5 family DWC3 specific Glue layer + * + * Copyright (c) 2017 + * Jean-Jacques Hiblot jjhiblot@ti.com + * based on dwc3-sti-glue + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include <errno.h> + +DECLARE_GLOBAL_DATA_PTR; + +static int omap5_dwc3_glue_bind(struct udevice *dev) +{ + int dwc3_node; + + /* check if one subnode is present */ + dwc3_node = fdt_first_subnode(gd->fdt_blob, dev_of_offset(dev)); + if (dwc3_node <= 0) { + printf("Can't find subnode for %s\n", dev->name); + return -ENODEV; + } + /* check if the subnode compatible string is the dwc3 one*/ + if (fdt_node_check_compatible(gd->fdt_blob, dwc3_node, + "snps,dwc3") != 0) { + printf("Can't find dwc3 subnode for %s\n", dev->name); + return -ENODEV; + } + + return dm_scan_fdt_dev(dev); +} + +static const struct udevice_id omap5_dwc3_glue_ids[] = { + { .compatible = "ti,dwc3" }, + { } +}; + +U_BOOT_DRIVER(dwc3_omap5_glue) = { + .name = "dwc3_omap5_glue", + .id = UCLASS_MISC, + .of_match = omap5_dwc3_glue_ids, + .bind = omap5_dwc3_glue_bind, +};