mirror of
https://github.com/brain-hackers/u-boot-brain
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1eb47efc49
Use ePAPR defined properties for x86-uart: clock-frequency and current-speed. Assign the value of clock-frequency in device tree to plat->clock of x86-uart instead of using hardcoded number. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
45 lines
951 B
C
45 lines
951 B
C
/*
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* Copyright (c) 2014 Google, Inc
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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 <dm.h>
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#include <fdtdec.h>
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#include <ns16550.h>
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#include <serial.h>
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DECLARE_GLOBAL_DATA_PTR;
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static const struct udevice_id x86_serial_ids[] = {
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{ .compatible = "x86-uart" },
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{ }
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};
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static int x86_serial_ofdata_to_platdata(struct udevice *dev)
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{
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struct ns16550_platdata *plat = dev_get_platdata(dev);
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int ret;
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ret = ns16550_serial_ofdata_to_platdata(dev);
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if (ret)
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return ret;
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plat->clock = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
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"clock-frequency", 1843200);
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return 0;
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}
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U_BOOT_DRIVER(serial_ns16550) = {
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.name = "serial_x86",
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.id = UCLASS_SERIAL,
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.of_match = x86_serial_ids,
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.ofdata_to_platdata = x86_serial_ofdata_to_platdata,
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.platdata_auto_alloc_size = sizeof(struct ns16550_platdata),
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.priv_auto_alloc_size = sizeof(struct NS16550),
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.probe = ns16550_serial_probe,
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.ops = &ns16550_serial_ops,
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};
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