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
---
Changes in v3: - use the live tree API in the omap5 glue logic
Changes in v2: None
drivers/usb/host/Kconfig | 10 +++++++ drivers/usb/host/Makefile | 1 + drivers/usb/host/dwc3-omap-glue.c | 60 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 71 insertions(+) create mode 100644 drivers/usb/host/dwc3-omap-glue.c
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index a7249b7..ae34eeb 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 9819489..a47446a 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -59,6 +59,7 @@ 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..5ce3af6 --- /dev/null +++ b/drivers/usb/host/dwc3-omap-glue.c @@ -0,0 +1,60 @@ +/* + * 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> +#include <dm/of_access.h> + +DECLARE_GLOBAL_DATA_PTR; + +static inline bool is_ofnode_compatible(ofnode node, const char *compat) +{ + const void *fdt = gd->fdt_blob; + + if (ofnode_is_np(node)) + return of_device_is_compatible(ofnode_to_np(node), compat, + NULL, NULL); + else + return !fdt_node_check_compatible(fdt, ofnode_to_offset(node), + compat); +} + +static int omap5_dwc3_glue_bind(struct udevice *dev) +{ + bool found = false; + ofnode node; + + dev_for_each_subnode(node, dev) { + if (is_ofnode_compatible(node, "snps,dwc3")) { + found = true; + break; + } + } + + if (!found) { + dev_err(dev, "Can't find subnode compatible with dwc3"); + return -ENOENT; + } + + 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, +};