1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2019, Bin Meng <bmeng.cn@gmail.com>
7 #include <clk-uclass.h>
11 struct gemgxl_mgmt_regs {
15 struct gemgxl_mgmt_platdata {
16 struct gemgxl_mgmt_regs *regs;
19 static int gemgxl_mgmt_ofdata_to_platdata(struct udevice *dev)
21 struct gemgxl_mgmt_platdata *plat = dev_get_platdata(dev);
23 plat->regs = (struct gemgxl_mgmt_regs *)dev_read_addr(dev);
28 static ulong gemgxl_mgmt_set_rate(struct clk *clk, ulong rate)
30 struct gemgxl_mgmt_platdata *plat = dev_get_platdata(clk->dev);
33 * GEMGXL TX clock operation mode:
35 * 0 = GMII mode. Use 125 MHz gemgxlclk from PRCI in TX logic
36 * and output clock on GMII output signal GTX_CLK
37 * 1 = MII mode. Use MII input signal TX_CLK in TX logic
39 writel(rate != 125000000, &plat->regs->tx_clk_sel);
44 const struct clk_ops gemgxl_mgmt_ops = {
45 .set_rate = gemgxl_mgmt_set_rate,
48 static const struct udevice_id gemgxl_mgmt_match[] = {
49 { .compatible = "sifive,cadencegemgxlmgmt0", },
53 U_BOOT_DRIVER(sifive_gemgxl_mgmt) = {
54 .name = "sifive-gemgxl-mgmt",
56 .of_match = gemgxl_mgmt_match,
57 .ofdata_to_platdata = gemgxl_mgmt_ofdata_to_platdata,
58 .platdata_auto_alloc_size = sizeof(struct gemgxl_mgmt_platdata),
59 .ops = &gemgxl_mgmt_ops,