imx8mn.c 2.9 KB

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  1. // SPDX-License-Identifier: GPL-2.0
  2. /*
  3. * Interconnect framework driver for i.MX8MN SoC
  4. *
  5. * Copyright (c) 2019-2020, NXP
  6. */
  7. #include <linux/module.h>
  8. #include <linux/platform_device.h>
  9. #include <dt-bindings/interconnect/imx8mn.h>
  10. #include "imx.h"
  11. static const struct imx_icc_node_adj_desc imx8mn_dram_adj = {
  12. .bw_mul = 1,
  13. .bw_div = 4,
  14. .phandle_name = "fsl,ddrc",
  15. };
  16. static const struct imx_icc_node_adj_desc imx8mn_noc_adj = {
  17. .bw_mul = 1,
  18. .bw_div = 4,
  19. .main_noc = true,
  20. };
  21. /*
  22. * Describe bus masters, slaves and connections between them
  23. *
  24. * This is a simplified subset of the bus diagram, there are several other
  25. * PL301 nics which are skipped/merged into PL301_MAIN
  26. */
  27. static struct imx_icc_node_desc nodes[] = {
  28. DEFINE_BUS_INTERCONNECT("NOC", IMX8MN_ICN_NOC, &imx8mn_noc_adj,
  29. IMX8MN_ICS_DRAM, IMX8MN_ICN_MAIN),
  30. DEFINE_BUS_SLAVE("DRAM", IMX8MN_ICS_DRAM, &imx8mn_dram_adj),
  31. DEFINE_BUS_SLAVE("OCRAM", IMX8MN_ICS_OCRAM, NULL),
  32. DEFINE_BUS_MASTER("A53", IMX8MN_ICM_A53, IMX8MN_ICN_NOC),
  33. /* GPUMIX */
  34. DEFINE_BUS_MASTER("GPU", IMX8MN_ICM_GPU, IMX8MN_ICN_GPU),
  35. DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MN_ICN_GPU, NULL, IMX8MN_ICN_NOC),
  36. /* DISPLAYMIX */
  37. DEFINE_BUS_MASTER("CSI1", IMX8MN_ICM_CSI1, IMX8MN_ICN_MIPI),
  38. DEFINE_BUS_MASTER("CSI2", IMX8MN_ICM_CSI2, IMX8MN_ICN_MIPI),
  39. DEFINE_BUS_MASTER("ISI", IMX8MN_ICM_ISI, IMX8MN_ICN_MIPI),
  40. DEFINE_BUS_MASTER("LCDIF", IMX8MN_ICM_LCDIF, IMX8MN_ICN_MIPI),
  41. DEFINE_BUS_INTERCONNECT("PL301_MIPI", IMX8MN_ICN_MIPI, NULL, IMX8MN_ICN_NOC),
  42. /* USB goes straight to NOC */
  43. DEFINE_BUS_MASTER("USB", IMX8MN_ICM_USB, IMX8MN_ICN_NOC),
  44. /* Audio */
  45. DEFINE_BUS_MASTER("SDMA2", IMX8MN_ICM_SDMA2, IMX8MN_ICN_AUDIO),
  46. DEFINE_BUS_MASTER("SDMA3", IMX8MN_ICM_SDMA3, IMX8MN_ICN_AUDIO),
  47. DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MN_ICN_AUDIO, NULL, IMX8MN_ICN_MAIN),
  48. /* Ethernet */
  49. DEFINE_BUS_MASTER("ENET", IMX8MN_ICM_ENET, IMX8MN_ICN_ENET),
  50. DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MN_ICN_ENET, NULL, IMX8MN_ICN_MAIN),
  51. /* Other */
  52. DEFINE_BUS_MASTER("SDMA1", IMX8MN_ICM_SDMA1, IMX8MN_ICN_MAIN),
  53. DEFINE_BUS_MASTER("NAND", IMX8MN_ICM_NAND, IMX8MN_ICN_MAIN),
  54. DEFINE_BUS_MASTER("USDHC1", IMX8MN_ICM_USDHC1, IMX8MN_ICN_MAIN),
  55. DEFINE_BUS_MASTER("USDHC2", IMX8MN_ICM_USDHC2, IMX8MN_ICN_MAIN),
  56. DEFINE_BUS_MASTER("USDHC3", IMX8MN_ICM_USDHC3, IMX8MN_ICN_MAIN),
  57. DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MN_ICN_MAIN, NULL,
  58. IMX8MN_ICN_NOC, IMX8MN_ICS_OCRAM),
  59. };
  60. static int imx8mn_icc_probe(struct platform_device *pdev)
  61. {
  62. return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes));
  63. }
  64. static int imx8mn_icc_remove(struct platform_device *pdev)
  65. {
  66. return imx_icc_unregister(pdev);
  67. }
  68. static struct platform_driver imx8mn_icc_driver = {
  69. .probe = imx8mn_icc_probe,
  70. .remove = imx8mn_icc_remove,
  71. .driver = {
  72. .name = "imx8mn-interconnect",
  73. },
  74. };
  75. module_platform_driver(imx8mn_icc_driver);
  76. MODULE_ALIAS("platform:imx8mn-interconnect");
  77. MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>");
  78. MODULE_LICENSE("GPL v2");