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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2020 Stefan Roese <sr@denx.de>
*/
#include <clk-uclass.h>
#include <dm.h>
#include <asm/global_data.h>
#include <dt-bindings/clock/octeon-clock.h>
DECLARE_GLOBAL_DATA_PTR;
struct octeon_clk_priv {
u64 core_clk;
u64 io_clk;
};
static int octeon_clk_enable(struct clk *clk)
{
/* Nothing to do on Octeon */
return 0;
}
static ulong octeon_clk_get_rate(struct clk *clk)
{
struct octeon_clk_priv *priv = dev_get_priv(clk->dev);
switch (clk->id) {
case OCTEON_CLK_CORE:
return priv->core_clk;
case OCTEON_CLK_IO:
return priv->io_clk;
default:
return 0;
}
return 0;
}
static struct clk_ops octeon_clk_ops = {
.enable = octeon_clk_enable,
.get_rate = octeon_clk_get_rate,
};
static const struct udevice_id octeon_clk_ids[] = {
{ .compatible = "mrvl,octeon-clk" },
{ /* sentinel */ }
};
static int octeon_clk_probe(struct udevice *dev)
{
struct octeon_clk_priv *priv = dev_get_priv(dev);
/*
* The clock values are already read into GD, lets just store them
* in priv data
*/
priv->core_clk = gd->cpu_clk;
priv->io_clk = gd->bus_clk;
return 0;
}
U_BOOT_DRIVER(clk_octeon) = {
.name = "clk_octeon",
.id = UCLASS_CLK,
.of_match = octeon_clk_ids,
.ops = &octeon_clk_ops,
.probe = octeon_clk_probe,
.priv_auto = sizeof(struct octeon_clk_priv),
};
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