drivers/clk/mediatek/clk-mt2701-hif.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2014 MediaTek Inc.
   4  * Author: Shunli Wang <shunli.wang@mediatek.com>
   5  */
   6
   7 #include <linux/clk-provider.h>
   8 #include <linux/platform_device.h>
   9
  10 #include "clk-mtk.h"
  11 #include "clk-gate.h"
  12
  13 #include <dt-bindings/clock/mt2701-clk.h>
  14
  15 static const struct mtk_gate_regs hif_cg_regs = {
  16         .sta_ofs = 0x0030,
  17 };
  18
  19 #define GATE_HIF(_id, _name, _parent, _shift)                           \
  20         GATE_MTK(_id, _name, _parent, &hif_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr_inv)
  21
  22 static const struct mtk_gate hif_clks[] = {
  23         GATE_DUMMY(CLK_DUMMY, "hif_dummy"),
  24         GATE_HIF(CLK_HIFSYS_USB0PHY, "usb0_phy_clk", "ethpll_500m_ck", 21),
  25         GATE_HIF(CLK_HIFSYS_USB1PHY, "usb1_phy_clk", "ethpll_500m_ck", 22),
  26         GATE_HIF(CLK_HIFSYS_PCIE0, "pcie0_clk", "ethpll_500m_ck", 24),
  27         GATE_HIF(CLK_HIFSYS_PCIE1, "pcie1_clk", "ethpll_500m_ck", 25),
  28         GATE_HIF(CLK_HIFSYS_PCIE2, "pcie2_clk", "ethpll_500m_ck", 26),
  29 };
  30
  31 static u16 rst_ofs[] = { 0x34, };
  32
  33 static const struct mtk_clk_rst_desc clk_rst_desc = {
  34         .version = MTK_RST_SIMPLE,
  35         .rst_bank_ofs = rst_ofs,
  36         .rst_bank_nr = ARRAY_SIZE(rst_ofs),
  37 };
  38
  39 static const struct mtk_clk_desc hif_desc = {
  40         .clks = hif_clks,
  41         .num_clks = ARRAY_SIZE(hif_clks),
  42         .rst_desc = &clk_rst_desc,
  43 };
  44
  45 static const struct of_device_id of_match_clk_mt2701_hif[] = {
  46         { .compatible = "mediatek,mt2701-hifsys", .data = &hif_desc },
  47         { /* sentinel */ }
  48 };
  49 MODULE_DEVICE_TABLE(of, of_match_clk_mt2701_hif);
  50
  51 static struct platform_driver clk_mt2701_hif_drv = {
  52         .probe = mtk_clk_simple_probe,
  53         .remove = mtk_clk_simple_remove,
  54         .driver = {
  55                 .name = "clk-mt2701-hif",
  56                 .of_match_table = of_match_clk_mt2701_hif,
  57         },
  58 };
  59 module_platform_driver(clk_mt2701_hif_drv);
  60
  61 MODULE_DESCRIPTION("MediaTek MT2701 HIFSYS clocks driver");
  62 MODULE_LICENSE("GPL");