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https://github.com/AsahiLinux/u-boot
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9e5935c04e
The patch is referred to at91 clock driver of Linux, to make the clock node descriptions in DT aligned with the Linux's. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org>
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
/*
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* Copyright (C) 2016 Atmel Corporation
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* Wenyou.Yang <wenyou.yang@atmel.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <clk-uclass.h>
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#include <dm/device.h>
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#include <linux/io.h>
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#include <mach/at91_pmc.h>
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#include "pmc.h"
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DECLARE_GLOBAL_DATA_PTR;
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static int plla_clk_enable(struct clk *clk)
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{
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struct pmc_platdata *plat = dev_get_platdata(clk->dev);
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struct at91_pmc *pmc = plat->reg_base;
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if (readl(&pmc->sr) & AT91_PMC_LOCKA)
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return 0;
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return -EINVAL;
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}
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static ulong plla_clk_get_rate(struct clk *clk)
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{
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return gd->arch.plla_rate_hz;
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}
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static struct clk_ops plla_clk_ops = {
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.enable = plla_clk_enable,
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.get_rate = plla_clk_get_rate,
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};
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static int plla_clk_probe(struct udevice *dev)
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{
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return at91_pmc_core_probe(dev);
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}
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static const struct udevice_id plla_clk_match[] = {
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{ .compatible = "atmel,sama5d3-clk-pll" },
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{}
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};
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U_BOOT_DRIVER(at91_plla_clk) = {
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.name = "at91-plla-clk",
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.id = UCLASS_CLK,
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.of_match = plla_clk_match,
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.probe = plla_clk_probe,
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.platdata_auto_alloc_size = sizeof(struct pmc_platdata),
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.ops = &plla_clk_ops,
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};
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