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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com>
- */
- #include <common.h>
- #include <clk-uclass.h>
- #include <dm.h>
- #include <linux/clk-provider.h>
- static ulong clk_fixed_rate_get_rate(struct clk *clk)
- {
- return to_clk_fixed_rate(clk->dev)->fixed_rate;
- }
- /* avoid clk_enable() return -ENOSYS */
- static int dummy_enable(struct clk *clk)
- {
- return 0;
- }
- const struct clk_ops clk_fixed_rate_ops = {
- .get_rate = clk_fixed_rate_get_rate,
- .enable = dummy_enable,
- };
- static int clk_fixed_rate_ofdata_to_platdata(struct udevice *dev)
- {
- struct clk *clk = &to_clk_fixed_rate(dev)->clk;
- #if !CONFIG_IS_ENABLED(OF_PLATDATA)
- to_clk_fixed_rate(dev)->fixed_rate =
- dev_read_u32_default(dev, "clock-frequency", 0);
- #endif
- /* Make fixed rate clock accessible from higher level struct clk */
- dev->uclass_priv = clk;
- clk->dev = dev;
- clk->enable_count = 0;
- return 0;
- }
- static const struct udevice_id clk_fixed_rate_match[] = {
- {
- .compatible = "fixed-clock",
- },
- { /* sentinel */ }
- };
- U_BOOT_DRIVER(fixed_clock) = {
- .name = "fixed_clock",
- .id = UCLASS_CLK,
- .of_match = clk_fixed_rate_match,
- .ofdata_to_platdata = clk_fixed_rate_ofdata_to_platdata,
- .plat_auto = sizeof(struct clk_fixed_rate),
- .ops = &clk_fixed_rate_ops,
- .flags = DM_FLAG_PRE_RELOC,
- };
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