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