drivers/clk/sunxi/clk_a80.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2018 Amarula Solutions.
   4  * Author: Jagan Teki <jagan@amarulasolutions.com>
   5  */
   6
   7 #include <common.h>
   8 #include <clk-uclass.h>
   9 #include <dm.h>
  10 #include <errno.h>
  11 #include <asm/arch/ccu.h>
  12 #include <dt-bindings/clock/sun9i-a80-ccu.h>
  13 #include <dt-bindings/reset/sun9i-a80-ccu.h>
  14
  15 static const struct ccu_clk_gate a80_gates[] = {
  16         [CLK_BUS_UART0]         = GATE(0x594, BIT(16)),
  17         [CLK_BUS_UART1]         = GATE(0x594, BIT(17)),
  18         [CLK_BUS_UART2]         = GATE(0x594, BIT(18)),
  19         [CLK_BUS_UART3]         = GATE(0x594, BIT(19)),
  20         [CLK_BUS_UART4]         = GATE(0x594, BIT(20)),
  21         [CLK_BUS_UART5]         = GATE(0x594, BIT(21)),
  22 };
  23
  24 static const struct ccu_reset a80_resets[] = {
  25         [RST_BUS_UART0]         = RESET(0x5b4, BIT(16)),
  26         [RST_BUS_UART1]         = RESET(0x5b4, BIT(17)),
  27         [RST_BUS_UART2]         = RESET(0x5b4, BIT(18)),
  28         [RST_BUS_UART3]         = RESET(0x5b4, BIT(19)),
  29         [RST_BUS_UART4]         = RESET(0x5b4, BIT(20)),
  30         [RST_BUS_UART5]         = RESET(0x5b4, BIT(21)),
  31 };
  32
  33 static const struct ccu_desc a80_ccu_desc = {
  34         .gates = a80_gates,
  35         .resets = a80_resets,
  36 };
  37
  38 static int a80_clk_bind(struct udevice *dev)
  39 {
  40         return sunxi_reset_bind(dev, ARRAY_SIZE(a80_resets));
  41 }
  42
  43 static const struct udevice_id a80_ccu_ids[] = {
  44         { .compatible = "allwinner,sun9i-a80-ccu",
  45           .data = (ulong)&a80_ccu_desc },
  46         { }
  47 };
  48
  49 U_BOOT_DRIVER(clk_sun9i_a80) = {
  50         .name           = "sun9i_a80_ccu",
  51         .id             = UCLASS_CLK,
  52         .of_match       = a80_ccu_ids,
  53         .priv_auto_alloc_size   = sizeof(struct ccu_priv),
  54         .ops            = &sunxi_clk_ops,
  55         .probe          = sunxi_clk_probe,
  56         .bind           = a80_clk_bind,
  57 };