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u-boot/drivers/misc/tegra_car.c

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
// SPDX-License-Identifier: GPL-2.0
misc: implement Tegra CAR core driver The Tegra CAR (Clock And Reset) module provides control of most clocks and reset signals within the Tegra SoC. This change implements a driver for this module. However, since the module implements multiple kinds of services (clocks, resets, perhaps more), all this driver does is bind various sub-devices, which in turn provide the real services. This driver is essentially an "MFD" (Multi-Function Device) in Linux kernel speak. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-13 16:45:57 +00:00
/*
* Copyright (c) 2016, NVIDIA CORPORATION.
*/
#include <common.h>
#include <dm.h>
common: Drop log.h from common header Move this header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-10 17:40:05 +00:00
#include <log.h>
misc: implement Tegra CAR core driver The Tegra CAR (Clock And Reset) module provides control of most clocks and reset signals within the Tegra SoC. This change implements a driver for this module. However, since the module implements multiple kinds of services (clocks, resets, perhaps more), all this driver does is bind various sub-devices, which in turn provide the real services. This driver is essentially an "MFD" (Multi-Function Device) in Linux kernel speak. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-13 16:45:57 +00:00
#include <dm/lists.h>
#include <dm/root.h>
/**
* The CAR exposes multiple different services. We create a sub-device for
* each separate type of service, since each device must be of the appropriate
* UCLASS.
*/
static int tegra_car_bpmp_bind(struct udevice *dev)
{
int ret;
struct udevice *child;
debug("%s(dev=%p)\n", __func__, dev);
ret = device_bind_driver_to_node(dev, "tegra_car_clk", "tegra_car_clk",
dm: core: Update device_bind_driver_to_node() to use ofnode Adjust this function to us an ofnode instead of an offset, so it can be used with livetree. This involves updating all callers. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-19 02:09:07 +00:00
dev_ofnode(dev), &child);
misc: implement Tegra CAR core driver The Tegra CAR (Clock And Reset) module provides control of most clocks and reset signals within the Tegra SoC. This change implements a driver for this module. However, since the module implements multiple kinds of services (clocks, resets, perhaps more), all this driver does is bind various sub-devices, which in turn provide the real services. This driver is essentially an "MFD" (Multi-Function Device) in Linux kernel speak. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-13 16:45:57 +00:00
if (ret)
return ret;
ret = device_bind_driver_to_node(dev, "tegra_car_reset",
dm: core: Update device_bind_driver_to_node() to use ofnode Adjust this function to us an ofnode instead of an offset, so it can be used with livetree. This involves updating all callers. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-19 02:09:07 +00:00
"tegra_car_reset", dev_ofnode(dev),
misc: implement Tegra CAR core driver The Tegra CAR (Clock And Reset) module provides control of most clocks and reset signals within the Tegra SoC. This change implements a driver for this module. However, since the module implements multiple kinds of services (clocks, resets, perhaps more), all this driver does is bind various sub-devices, which in turn provide the real services. This driver is essentially an "MFD" (Multi-Function Device) in Linux kernel speak. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-09-13 16:45:57 +00:00
&child);
if (ret)
return ret;
return 0;
}
static int tegra_car_bpmp_probe(struct udevice *dev)
{
debug("%s(dev=%p)\n", __func__, dev);
return 0;
}
static int tegra_car_bpmp_remove(struct udevice *dev)
{
debug("%s(dev=%p)\n", __func__, dev);
return 0;
}
static const struct udevice_id tegra_car_bpmp_ids[] = {
{ .compatible = "nvidia,tegra20-car" },
{ .compatible = "nvidia,tegra30-car" },
{ .compatible = "nvidia,tegra114-car" },
{ .compatible = "nvidia,tegra124-car" },
{ .compatible = "nvidia,tegra210-car" },
{ }
};
U_BOOT_DRIVER(tegra_car_bpmp) = {
.name = "tegra_car",
.id = UCLASS_MISC,
.of_match = tegra_car_bpmp_ids,
.bind = tegra_car_bpmp_bind,
.probe = tegra_car_bpmp_probe,
.remove = tegra_car_bpmp_remove,
};
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