Commit 17b68b5a authored by Wenyou Yang's avatar Wenyou Yang Committed by Andreas Bießmann

dm: atmel: Add driver model support for the ehci driver

Add driver model support while retaining the existing legacy code.
This allows the driver to support boards that have converted to
driver model as well as those that have not.
Signed-off-by: default avatarWenyou Yang <>
Acked-by: default avatarSimon Glass <>
parent 2c4b2dd2
......@@ -57,6 +57,13 @@ config USB_EHCI
bool "Support for Atmel on-chip EHCI USB controller"
depends on ARCH_AT91
default y
Enables support for the on-chip EHCI controller on Atmel chips.
bool "Support for MVEBU (AXP / A38x) on-chip EHCI USB controller"
depends on ARCH_MVEBU
......@@ -7,12 +7,18 @@
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <usb.h>
#include <asm/io.h>
#include <asm/arch/clk.h>
#include "ehci.h"
int ehci_hcd_init(int index, enum usb_init_type init,
struct ehci_hccr **hccr, struct ehci_hcor **hcor)
......@@ -41,3 +47,113 @@ int ehci_hcd_stop(int index)
return 0;
struct ehci_atmel_priv {
struct ehci_ctrl ehci;
static int ehci_atmel_enable_clk(struct udevice *dev)
struct udevice *dev_clk;
struct clk clk;
int periph;
int ret;
ret = clk_get_by_index(dev, 0, &clk);
if (ret)
return ret;
ret = clk_enable(&clk);
if (ret)
return ret;
ret = clk_get_by_index(dev, 1, &clk);
if (ret)
return -EINVAL;
periph = fdtdec_get_uint(gd->fdt_blob,>of_offset, "reg", -1);
if (periph < 0)
return -EINVAL;
dev_clk = dev_get_parent(;
if (!dev_clk)
return -ENODEV;
ret = clk_request(dev_clk, &clk);
if (ret)
return ret; = periph;
ret = clk_enable(&clk);
if (ret)
return ret;
return 0;
static int ehci_atmel_probe(struct udevice *dev)
struct ehci_hccr *hccr;
struct ehci_hcor *hcor;
fdt_addr_t hcd_base;
int ret;
ret = ehci_atmel_enable_clk(dev);
if (ret) {
debug("Failed to enable USB Host clock\n");
return ret;
* Get the base address for EHCI controller from the device node
hcd_base = dev_get_addr(dev);
if (hcd_base == FDT_ADDR_T_NONE) {
debug("Can't get the EHCI register base address\n");
return -ENXIO;
hccr = (struct ehci_hccr *)hcd_base;
hcor = (struct ehci_hcor *)
((u32)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
debug("echi-atmel: init hccr %x and hcor %x hc_length %d\n",
(u32)hccr, (u32)hcor,
return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
static int ehci_atmel_remove(struct udevice *dev)
int ret;
ret = ehci_deregister(dev);
if (ret)
return ret;
return 0;
static const struct udevice_id ehci_usb_ids[] = {
{ .compatible = "atmel,at91sam9g45-ehci", },
{ }
U_BOOT_DRIVER(ehci_atmel) = {
.name = "ehci_atmel",
.of_match = ehci_usb_ids,
.probe = ehci_atmel_probe,
.remove = ehci_atmel_remove,
.ops = &ehci_usb_ops,
.platdata_auto_alloc_size = sizeof(struct usb_platdata),
.priv_auto_alloc_size = sizeof(struct ehci_atmel_priv),
Markdown is supported
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment