mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-12 22:26:16 +09:00
135aa95002
The following changes are made to the clock API: * The concept of "clocks" and "peripheral clocks" are unified; each clock provider now implements a single set of clocks. This provides a simpler conceptual interface to clients, and better aligns with device tree clock bindings. * Clocks are now identified with a single "struct clk", rather than requiring clients to store the clock provider device and clock identity values separately. For simple clock consumers, this isolates clients from internal details of the clock API. * clk.h is split so it only contains the client/consumer API, whereas clk-uclass.h contains the provider API. This aligns with the recently added reset and mailbox APIs. * clk_ops .of_xlate(), .request(), and .free() are added so providers can customize these operations if needed. This also aligns with the recently added reset and mailbox APIs. * clk_disable() is added. * All users of the current clock APIs are updated. * Sandbox clock tests are updated to exercise clock lookup via DT, and clock enable/disable. * rkclk_get_clk() is removed and replaced with standard APIs. Buildman shows no clock-related errors for any board for which buildman can download a toolchain. test/py passes for sandbox (which invokes the dm clk test amongst others). Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
/*
|
|
* Copyright (C) 2015 Alexey Brodkin <abrodkin@synopsys.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <clk.h>
|
|
#include <asm/io.h>
|
|
#include <dm.h>
|
|
#include "ehci.h"
|
|
|
|
/*
|
|
* Even though here we don't explicitly use "struct ehci_ctrl"
|
|
* ehci_register() expects it to be the first thing that resides in
|
|
* device's private data.
|
|
*/
|
|
struct generic_ehci {
|
|
struct ehci_ctrl ctrl;
|
|
};
|
|
|
|
static int ehci_usb_probe(struct udevice *dev)
|
|
{
|
|
struct ehci_hccr *hccr;
|
|
struct ehci_hcor *hcor;
|
|
int i;
|
|
|
|
for (i = 0; ; i++) {
|
|
struct clk clk;
|
|
int ret;
|
|
|
|
ret = clk_get_by_index(dev, i, &clk);
|
|
if (ret < 0)
|
|
break;
|
|
if (clk_enable(&clk))
|
|
printf("failed to enable clock %d\n", i);
|
|
clk_free(&clk);
|
|
}
|
|
|
|
hccr = map_physmem(dev_get_addr(dev), 0x100, MAP_NOCACHE);
|
|
hcor = (struct ehci_hcor *)((uintptr_t)hccr +
|
|
HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
|
|
|
|
return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
|
|
}
|
|
|
|
static int ehci_usb_remove(struct udevice *dev)
|
|
{
|
|
return ehci_deregister(dev);
|
|
}
|
|
|
|
static const struct udevice_id ehci_usb_ids[] = {
|
|
{ .compatible = "generic-ehci" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(ehci_generic) = {
|
|
.name = "ehci_generic",
|
|
.id = UCLASS_USB,
|
|
.of_match = ehci_usb_ids,
|
|
.probe = ehci_usb_probe,
|
|
.remove = ehci_usb_remove,
|
|
.ops = &ehci_usb_ops,
|
|
.priv_auto_alloc_size = sizeof(struct generic_ehci),
|
|
.flags = DM_FLAG_ALLOC_PRIV_DMA,
|
|
};
|