diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/drivers/core/simple-pm-bus.c | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/drivers/core/simple-pm-bus.c')
| -rw-r--r-- | roms/u-boot/drivers/core/simple-pm-bus.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/core/simple-pm-bus.c b/roms/u-boot/drivers/core/simple-pm-bus.c new file mode 100644 index 000000000..1bb0d86e2 --- /dev/null +++ b/roms/u-boot/drivers/core/simple-pm-bus.c @@ -0,0 +1,56 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 Sean Anderson <seanga2@gmail.com> + */ + +#include <common.h> +#include <clk.h> +#include <dm.h> + +/* + * Power domains are taken care of by driver_probe, so we just have to enable + * clocks + */ +static int simple_pm_bus_probe(struct udevice *dev) +{ + int ret; + struct clk_bulk *bulk = dev_get_priv(dev); + + ret = clk_get_bulk(dev, bulk); + if (ret) + return ret; + + ret = clk_enable_bulk(bulk); + if (ret && ret != -ENOSYS) { + clk_release_bulk(bulk); + return ret; + } + return 0; +} + +static int simple_pm_bus_remove(struct udevice *dev) +{ + int ret; + struct clk_bulk *bulk = dev_get_priv(dev); + + ret = clk_release_bulk(bulk); + if (ret && ret != -ENOSYS) + return ret; + else + return 0; +} + +static const struct udevice_id simple_pm_bus_ids[] = { + { .compatible = "simple-pm-bus" }, + { } +}; + +U_BOOT_DRIVER(simple_pm_bus_drv) = { + .name = "simple_pm_bus", + .id = UCLASS_SIMPLE_BUS, + .of_match = simple_pm_bus_ids, + .probe = simple_pm_bus_probe, + .remove = simple_pm_bus_remove, + .priv_auto = sizeof(struct clk_bulk), + .flags = DM_FLAG_PRE_RELOC, +}; |