arch/arm/include/asm/arch-sunxi/ccu.h

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2018 Amarula Solutions.
   4  * Author: Jagan Teki <jagan@amarulasolutions.com>
   5  */
   6
   7 #ifndef _ASM_ARCH_CCU_H
   8 #define _ASM_ARCH_CCU_H
   9
  10 /**
  11  * enum ccu_flags - ccu clock flags
  12  *
  13  * @CCU_CLK_F_IS_VALID:         is given clock gate is valid?
  14  */
  15 enum ccu_flags {
  16         CCU_CLK_F_IS_VALID              = BIT(0),
  17 };
  18
  19 /**
  20  * struct ccu_clk_gate - ccu clock gate
  21  * @off:        gate offset
  22  * @bit:        gate bit
  23  * @flags:      ccu clock gate flags
  24  */
  25 struct ccu_clk_gate {
  26         u16 off;
  27         u32 bit;
  28         enum ccu_flags flags;
  29 };
  30
  31 #define GATE(_off, _bit) {                      \
  32         .off = _off,                            \
  33         .bit = _bit,                            \
  34         .flags = CCU_CLK_F_IS_VALID,            \
  35 }
  36
  37 /**
  38  * struct ccu_desc - clock control unit descriptor
  39  *
  40  * @gates:      clock gates
  41  */
  42 struct ccu_desc {
  43         const struct ccu_clk_gate *gates;
  44 };
  45
  46 /**
  47  * struct ccu_priv - sunxi clock control unit
  48  *
  49  * @base:       base address
  50  * @desc:       ccu descriptor
  51  */
  52 struct ccu_priv {
  53         void *base;
  54         const struct ccu_desc *desc;
  55 };
  56
  57 /**
  58  * sunxi_clk_probe - common sunxi clock probe
  59  * @dev:        clock device
  60  */
  61 int sunxi_clk_probe(struct udevice *dev);
  62
  63 extern struct clk_ops sunxi_clk_ops;
  64
  65 #endif /* _ASM_ARCH_CCU_H */