clk-mt2701-hif.c 1.8 KB

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  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. #include <linux/clk-provider.h>
  7. #include <linux/platform_device.h>
  8. #include "clk-mtk.h"
  9. #include "clk-gate.h"
  10. #include <dt-bindings/clock/mt2701-clk.h>
  11. static const struct mtk_gate_regs hif_cg_regs = {
  12. .sta_ofs = 0x0030,
  13. };
  14. #define GATE_HIF(_id, _name, _parent, _shift) { \
  15. .id = _id, \
  16. .name = _name, \
  17. .parent_name = _parent, \
  18. .regs = &hif_cg_regs, \
  19. .shift = _shift, \
  20. .ops = &mtk_clk_gate_ops_no_setclr_inv, \
  21. }
  22. static const struct mtk_gate hif_clks[] = {
  23. GATE_HIF(CLK_HIFSYS_USB0PHY, "usb0_phy_clk", "ethpll_500m_ck", 21),
  24. GATE_HIF(CLK_HIFSYS_USB1PHY, "usb1_phy_clk", "ethpll_500m_ck", 22),
  25. GATE_HIF(CLK_HIFSYS_PCIE0, "pcie0_clk", "ethpll_500m_ck", 24),
  26. GATE_HIF(CLK_HIFSYS_PCIE1, "pcie1_clk", "ethpll_500m_ck", 25),
  27. GATE_HIF(CLK_HIFSYS_PCIE2, "pcie2_clk", "ethpll_500m_ck", 26),
  28. };
  29. static const struct of_device_id of_match_clk_mt2701_hif[] = {
  30. { .compatible = "mediatek,mt2701-hifsys", },
  31. {}
  32. };
  33. static int clk_mt2701_hif_probe(struct platform_device *pdev)
  34. {
  35. struct clk_onecell_data *clk_data;
  36. int r;
  37. struct device_node *node = pdev->dev.of_node;
  38. clk_data = mtk_alloc_clk_data(CLK_HIFSYS_NR);
  39. mtk_clk_register_gates(node, hif_clks, ARRAY_SIZE(hif_clks),
  40. clk_data);
  41. r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  42. if (r) {
  43. dev_err(&pdev->dev,
  44. "could not register clock provider: %s: %d\n",
  45. pdev->name, r);
  46. return r;
  47. }
  48. mtk_register_reset_controller(node, 1, 0x34);
  49. return 0;
  50. }
  51. static struct platform_driver clk_mt2701_hif_drv = {
  52. .probe = clk_mt2701_hif_probe,
  53. .driver = {
  54. .name = "clk-mt2701-hif",
  55. .of_match_table = of_match_clk_mt2701_hif,
  56. },
  57. };
  58. builtin_platform_driver(clk_mt2701_hif_drv);