mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 22:03:15 +00:00
120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2016 Atmel Corporation
|
|
* Wenyou.Yang <wenyou.yang@atmel.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <clk-uclass.h>
|
|
#include <dm.h>
|
|
#include <log.h>
|
|
#include <dm/lists.h>
|
|
#include <dm/util.h>
|
|
#include "pmc.h"
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static const struct udevice_id at91_pmc_match[] = {
|
|
{ .compatible = "atmel,at91rm9200-pmc" },
|
|
{ .compatible = "atmel,at91sam9260-pmc" },
|
|
{ .compatible = "atmel,at91sam9g45-pmc" },
|
|
{ .compatible = "atmel,at91sam9n12-pmc" },
|
|
{ .compatible = "atmel,at91sam9x5-pmc" },
|
|
{ .compatible = "atmel,sama5d3-pmc" },
|
|
{ .compatible = "atmel,sama5d2-pmc" },
|
|
{}
|
|
};
|
|
|
|
U_BOOT_DRIVER(at91_pmc) = {
|
|
.name = "at91-pmc",
|
|
.id = UCLASS_SIMPLE_BUS,
|
|
.of_match = at91_pmc_match,
|
|
};
|
|
|
|
/*---------------------------------------------------------*/
|
|
|
|
int at91_pmc_core_probe(struct udevice *dev)
|
|
{
|
|
struct pmc_platdata *plat = dev_get_platdata(dev);
|
|
|
|
dev = dev_get_parent(dev);
|
|
|
|
plat->reg_base = (struct at91_pmc *)devfdt_get_addr_ptr(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* at91_clk_sub_device_bind() - for the at91 clock driver
|
|
* Recursively bind its children as clk devices.
|
|
*
|
|
* @return: 0 on success, or negative error code on failure
|
|
*/
|
|
int at91_clk_sub_device_bind(struct udevice *dev, const char *drv_name)
|
|
{
|
|
const void *fdt = gd->fdt_blob;
|
|
int offset = dev_of_offset(dev);
|
|
bool pre_reloc_only = !(gd->flags & GD_FLG_RELOC);
|
|
const char *name;
|
|
int ret;
|
|
|
|
for (offset = fdt_first_subnode(fdt, offset);
|
|
offset > 0;
|
|
offset = fdt_next_subnode(fdt, offset)) {
|
|
if (pre_reloc_only &&
|
|
!ofnode_pre_reloc(offset_to_ofnode(offset)))
|
|
continue;
|
|
/*
|
|
* If this node has "compatible" property, this is not
|
|
* a clock sub-node, but a normal device. skip.
|
|
*/
|
|
fdt_get_property(fdt, offset, "compatible", &ret);
|
|
if (ret >= 0)
|
|
continue;
|
|
|
|
if (ret != -FDT_ERR_NOTFOUND)
|
|
return ret;
|
|
|
|
name = fdt_get_name(fdt, offset, NULL);
|
|
if (!name)
|
|
return -EINVAL;
|
|
ret = device_bind_driver_to_node(dev, drv_name, name,
|
|
offset_to_ofnode(offset), NULL);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int at91_clk_of_xlate(struct clk *clk, struct ofnode_phandle_args *args)
|
|
{
|
|
int periph;
|
|
|
|
if (args->args_count) {
|
|
debug("Invalid args_count: %d\n", args->args_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
periph = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(clk->dev), "reg",
|
|
-1);
|
|
if (periph < 0)
|
|
return -EINVAL;
|
|
|
|
clk->id = periph;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int at91_clk_probe(struct udevice *dev)
|
|
{
|
|
struct udevice *dev_periph_container, *dev_pmc;
|
|
struct pmc_platdata *plat = dev_get_platdata(dev);
|
|
|
|
dev_periph_container = dev_get_parent(dev);
|
|
dev_pmc = dev_get_parent(dev_periph_container);
|
|
|
|
plat->reg_base = (struct at91_pmc *)devfdt_get_addr_ptr(dev_pmc);
|
|
|
|
return 0;
|
|
}
|