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board-support
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u-boot-2017.01+gitAUTOINC+340fb36f04-g340fb36f04
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arch
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arm
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mach-uniphier
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clk
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clk-pro4.c

clk-pro4.c 1.3 KB
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  1. /*
    2. 

  2.  * Copyright (C) 2011-2015 Panasonic Corporation
    3. 

  3.  * Copyright (C) 2015-2016 Socionext Inc.
    4. 

  4.  *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
    5. 

  5.  *
    6. 

  6.  * SPDX-License-Identifier:	GPL-2.0+
    7. 

  7.  */
    8. 

  8. 

  9. #include <linux/io.h>
    10. 

  10. 

  11. #include "../init.h"
    12. 

  12. #include "../sc-regs.h"
    13. 

  13. 

  14. void uniphier_pro4_clk_init(void)
    15. 

  15. {
    16. 

  16. 	u32 tmp;
    17. 

  17. 

  18. 	/* deassert reset */
    19. 

  19. 	tmp = readl(SC_RSTCTRL);
    20. 

  20. #ifdef CONFIG_USB_XHCI_UNIPHIER
    21. 

  21. 	tmp |= SC_RSTCTRL_NRST_USB3B0 | SC_RSTCTRL_NRST_USB3C0 |
    22. 

  22. 		SC_RSTCTRL_NRST_GIO;
    23. 

  23. #endif
    24. 

  24. #ifdef CONFIG_UNIPHIER_ETH
    25. 

  25. 	tmp |= SC_RSTCTRL_NRST_ETHER;
    26. 

  26. #endif
    27. 

  27. #ifdef CONFIG_NAND_DENALI
    28. 

  28. 	tmp |= SC_RSTCTRL_NRST_NAND;
    29. 

  29. #endif
    30. 

  30. 	writel(tmp, SC_RSTCTRL);
    31. 

  31. 	readl(SC_RSTCTRL); /* dummy read */
    32. 

  32. 

  33. #ifdef CONFIG_USB_XHCI_UNIPHIER
    34. 

  34. 	tmp = readl(SC_RSTCTRL2);
    35. 

  35. 	tmp |= SC_RSTCTRL2_NRST_USB3B1 | SC_RSTCTRL2_NRST_USB3C1;
    36. 

  36. 	writel(tmp, SC_RSTCTRL2);
    37. 

  37. 	readl(SC_RSTCTRL2); /* dummy read */
    38. 

  38. #endif
    39. 

  39. 

  40. 	/* provide clocks */
    41. 

  41. 	tmp = readl(SC_CLKCTRL);
    42. 

  42. #ifdef CONFIG_USB_XHCI_UNIPHIER
    43. 

  43. 	tmp |= SC_CLKCTRL_CEN_USB31 | SC_CLKCTRL_CEN_USB30 |
    44. 

  44. 		SC_CLKCTRL_CEN_GIO;
    45. 

  45. #endif
    46. 

  46. #ifdef CONFIG_UNIPHIER_ETH
    47. 

  47. 	tmp |= SC_CLKCTRL_CEN_ETHER;
    48. 

  48. #endif
    49. 

  49. #ifdef CONFIG_USB_EHCI
    50. 

  50. 	tmp |= SC_CLKCTRL_CEN_MIO | SC_CLKCTRL_CEN_STDMAC;
    51. 

  51. #endif
    52. 

  52. #ifdef CONFIG_NAND_DENALI
    53. 

  53. 	tmp |= SC_CLKCTRL_CEN_NAND;
    54. 

  54. #endif
    55. 

  55. 	writel(tmp, SC_CLKCTRL);
    56. 

  56. 	readl(SC_CLKCTRL); /* dummy read */
    57. 

  57. }
    58.