clk-mt2701-eth.c 1.9 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 eth_cg_regs = {
  12. .sta_ofs = 0x0030,
  13. };
  14. #define GATE_ETH(_id, _name, _parent, _shift) { \
  15. .id = _id, \
  16. .name = _name, \
  17. .parent_name = _parent, \
  18. .regs = &eth_cg_regs, \
  19. .shift = _shift, \
  20. .ops = &mtk_clk_gate_ops_no_setclr_inv, \
  21. }
  22. static const struct mtk_gate eth_clks[] = {
  23. GATE_ETH(CLK_ETHSYS_HSDMA, "hsdma_clk", "ethif_sel", 5),
  24. GATE_ETH(CLK_ETHSYS_ESW, "esw_clk", "ethpll_500m_ck", 6),
  25. GATE_ETH(CLK_ETHSYS_GP2, "gp2_clk", "trgpll", 7),
  26. GATE_ETH(CLK_ETHSYS_GP1, "gp1_clk", "ethpll_500m_ck", 8),
  27. GATE_ETH(CLK_ETHSYS_PCM, "pcm_clk", "ethif_sel", 11),
  28. GATE_ETH(CLK_ETHSYS_GDMA, "gdma_clk", "ethif_sel", 14),
  29. GATE_ETH(CLK_ETHSYS_I2S, "i2s_clk", "ethif_sel", 17),
  30. GATE_ETH(CLK_ETHSYS_CRYPTO, "crypto_clk", "ethif_sel", 29),
  31. };
  32. static const struct of_device_id of_match_clk_mt2701_eth[] = {
  33. { .compatible = "mediatek,mt2701-ethsys", },
  34. {}
  35. };
  36. static int clk_mt2701_eth_probe(struct platform_device *pdev)
  37. {
  38. struct clk_onecell_data *clk_data;
  39. int r;
  40. struct device_node *node = pdev->dev.of_node;
  41. clk_data = mtk_alloc_clk_data(CLK_ETHSYS_NR);
  42. mtk_clk_register_gates(node, eth_clks, ARRAY_SIZE(eth_clks),
  43. clk_data);
  44. r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  45. if (r)
  46. dev_err(&pdev->dev,
  47. "could not register clock provider: %s: %d\n",
  48. pdev->name, r);
  49. mtk_register_reset_controller(node, 1, 0x34);
  50. return r;
  51. }
  52. static struct platform_driver clk_mt2701_eth_drv = {
  53. .probe = clk_mt2701_eth_probe,
  54. .driver = {
  55. .name = "clk-mt2701-eth",
  56. .of_match_table = of_match_clk_mt2701_eth,
  57. },
  58. };
  59. builtin_platform_driver(clk_mt2701_eth_drv);