mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-10 23:24:38 +00:00
2902997b8b
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
73 lines
1.4 KiB
C
73 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
|
|
*
|
|
* Derived from linux/arch/mips/bcm63xx/clk.c:
|
|
* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <clk-uclass.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <asm/io.h>
|
|
|
|
#define MAX_CLKS 32
|
|
|
|
struct bcm6345_clk_priv {
|
|
void __iomem *regs;
|
|
};
|
|
|
|
static int bcm6345_clk_enable(struct clk *clk)
|
|
{
|
|
struct bcm6345_clk_priv *priv = dev_get_priv(clk->dev);
|
|
|
|
if (clk->id >= MAX_CLKS)
|
|
return -EINVAL;
|
|
|
|
setbits_be32(priv->regs, BIT(clk->id));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm6345_clk_disable(struct clk *clk)
|
|
{
|
|
struct bcm6345_clk_priv *priv = dev_get_priv(clk->dev);
|
|
|
|
if (clk->id >= MAX_CLKS)
|
|
return -EINVAL;
|
|
|
|
clrbits_be32(priv->regs, BIT(clk->id));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct clk_ops bcm6345_clk_ops = {
|
|
.disable = bcm6345_clk_disable,
|
|
.enable = bcm6345_clk_enable,
|
|
};
|
|
|
|
static const struct udevice_id bcm6345_clk_ids[] = {
|
|
{ .compatible = "brcm,bcm6345-clk" },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static int bcm63xx_clk_probe(struct udevice *dev)
|
|
{
|
|
struct bcm6345_clk_priv *priv = dev_get_priv(dev);
|
|
|
|
priv->regs = dev_remap_addr(dev);
|
|
if (!priv->regs)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_DRIVER(clk_bcm6345) = {
|
|
.name = "clk_bcm6345",
|
|
.id = UCLASS_CLK,
|
|
.of_match = bcm6345_clk_ids,
|
|
.ops = &bcm6345_clk_ops,
|
|
.probe = bcm63xx_clk_probe,
|
|
.priv_auto_alloc_size = sizeof(struct bcm6345_clk_priv),
|
|
};
|