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barebox/drivers/clk/tegra/clk.c

58 lines
1.5 KiB
C

/*
* Copyright (C) 2013 Lucas Stach <l.stach@pengutronix.de>
*
* Based on the Linux Tegra clock code
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <common.h>
#include <linux/clk.h>
#include "clk.h"
void tegra_init_from_table(struct tegra_clk_init_table *tbl,
struct clk *clks[], int clk_max)
{
struct clk *clk;
for (; tbl->clk_id < clk_max; tbl++) {
clk = clks[tbl->clk_id];
if (!clk)
return;
if (tbl->parent_id < clk_max) {
struct clk *parent = clks[tbl->parent_id];
if (clk_set_parent(clk, parent)) {
pr_err("%s: Failed to set parent %s of %s\n",
__func__, parent->name, clk->name);
WARN_ON(1);
}
}
if (tbl->rate)
if (clk_set_rate(clk, tbl->rate)) {
pr_err("%s: Failed to set rate %lu of %s\n",
__func__, tbl->rate, clk->name);
WARN_ON(1);
}
if (tbl->state)
if (clk_enable(clk)) {
pr_err("%s: Failed to enable %s\n", __func__,
clk->name);
WARN_ON(1);
}
}
}