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942f532800
Add clock framework for Treerunner (S32V234), based on code from the i.MX 3.10.17 codebase[1]. Add clock definitions that are used in the clocks vector (tree). At this point, the only PLL enabled is PERIPH-PLL. [1] https://source.codeaurora.org/external/imx/linux-imx/tree/?h=imx_3.10.17_1.0.0_ga_caf Signed-off-by: Stoica Cosmin-Stefan <cosmin.stoica@nxp.com> Signed-off-by: Larisa Grigore <Larisa.Grigore@nxp.com> Signed-off-by: Stefan-Gabriel Mirea <stefan-gabriel.mirea@nxp.com>
54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2015 Freescale Semiconductor, Inc.
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* Copyright 2017 NXP
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*/
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/of.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include "clk.h"
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void __init s32_check_clocks(struct clk *clks[], unsigned int count)
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{
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unsigned int i;
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for (i = 0; i < count; i++)
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if (IS_ERR(clks[i]))
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pr_err("S32 clk %u: register failed with %ld\n",
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i, PTR_ERR(clks[i]));
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}
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static struct clk * __init s32_obtain_fixed_clock_from_dt(const char *name)
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{
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struct of_phandle_args phandle;
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struct clk *clk = ERR_PTR(-ENODEV);
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char *path;
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path = kasprintf(GFP_KERNEL, "/clocks/%s", name);
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if (!path)
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return ERR_PTR(-ENOMEM);
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phandle.np = of_find_node_by_path(path);
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kfree(path);
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if (phandle.np) {
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clk = of_clk_get_from_provider(&phandle);
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of_node_put(phandle.np);
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}
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return clk;
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}
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struct clk * __init s32_obtain_fixed_clock(
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const char *name, unsigned long rate)
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{
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struct clk *clk;
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clk = s32_obtain_fixed_clock_from_dt(name);
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if (IS_ERR(clk))
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clk = s32_clk_fixed(name, rate);
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return clk;
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}
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