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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019, Rick Chen <rick@andestech.com>
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* Copyright (C) 2020, Sean Anderson <seanga2@gmail.com>
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*
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* U-Boot syscon driver for Andes's Platform Level Machine Timer (PLMT).
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* The PLMT block holds memory-mapped mtime register
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* associated with timer tick.
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*/
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#include <common.h>
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#include <dm.h>
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#include <timer.h>
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#include <asm/io.h>
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#include <dm/device-internal.h>
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#include <linux/err.h>
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/* mtime register */
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#define MTIME_REG(base) ((ulong)(base))
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static u64 notrace andes_plmt_get_count(struct udevice *dev)
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{
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return readq((void __iomem *)MTIME_REG(dev_get_priv(dev)));
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}
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#if CONFIG_IS_ENABLED(RISCV_MMODE) && IS_ENABLED(CONFIG_TIMER_EARLY)
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/**
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* timer_early_get_rate() - Get the timer rate before driver model
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*/
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unsigned long notrace timer_early_get_rate(void)
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{
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return RISCV_MMODE_TIMER_FREQ;
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}
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/**
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* timer_early_get_count() - Get the timer count before driver model
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*
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*/
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u64 notrace timer_early_get_count(void)
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{
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return readq((void __iomem *)MTIME_REG(RISCV_MMODE_TIMERBASE));
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}
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#endif
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static const struct timer_ops andes_plmt_ops = {
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.get_count = andes_plmt_get_count,
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};
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static int andes_plmt_probe(struct udevice *dev)
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{
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dev_set_priv(dev, dev_read_addr_ptr(dev));
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if (!dev_get_priv(dev))
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return -EINVAL;
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return timer_timebase_fallback(dev);
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}
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static const struct udevice_id andes_plmt_ids[] = {
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{ .compatible = "andestech,plmt0" },
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{ }
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};
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U_BOOT_DRIVER(andes_plmt) = {
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.name = "andes_plmt",
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.id = UCLASS_TIMER,
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.of_match = andes_plmt_ids,
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.ops = &andes_plmt_ops,
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.probe = andes_plmt_probe,
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.flags = DM_FLAG_PRE_RELOC,
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};
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