drivers/clk/sunxi/clk_a80.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2018 Amarula Solutions.
   4  * Author: Jagan Teki <[email protected]>
   5  */
   6
   7 #include <common.h>
   8 #include <clk-uclass.h>
   9 #include <dm.h>
  10 #include <errno.h>
  11 #include <clk/sunxi.h>
  12 #include <dt-bindings/clock/sun9i-a80-ccu.h>
  13 #include <dt-bindings/reset/sun9i-a80-ccu.h>
  14 #include <linux/bitops.h>
  15
  16 static const struct ccu_clk_gate a80_gates[] = {
  17         [CLK_SPI0]              = GATE(0x430, BIT(31)),
  18         [CLK_SPI1]              = GATE(0x434, BIT(31)),
  19         [CLK_SPI2]              = GATE(0x438, BIT(31)),
  20         [CLK_SPI3]              = GATE(0x43c, BIT(31)),
  21
  22         [CLK_BUS_MMC]           = GATE(0x580, BIT(8)),
  23         [CLK_BUS_SPI0]          = GATE(0x580, BIT(20)),
  24         [CLK_BUS_SPI1]          = GATE(0x580, BIT(21)),
  25         [CLK_BUS_SPI2]          = GATE(0x580, BIT(22)),
  26         [CLK_BUS_SPI3]          = GATE(0x580, BIT(23)),
  27
  28         [CLK_BUS_I2C0]          = GATE(0x594, BIT(0)),
  29         [CLK_BUS_I2C1]          = GATE(0x594, BIT(1)),
  30         [CLK_BUS_I2C2]          = GATE(0x594, BIT(2)),
  31         [CLK_BUS_I2C3]          = GATE(0x594, BIT(3)),
  32         [CLK_BUS_I2C4]          = GATE(0x594, BIT(4)),
  33         [CLK_BUS_UART0]         = GATE(0x594, BIT(16)),
  34         [CLK_BUS_UART1]         = GATE(0x594, BIT(17)),
  35         [CLK_BUS_UART2]         = GATE(0x594, BIT(18)),
  36         [CLK_BUS_UART3]         = GATE(0x594, BIT(19)),
  37         [CLK_BUS_UART4]         = GATE(0x594, BIT(20)),
  38         [CLK_BUS_UART5]         = GATE(0x594, BIT(21)),
  39 };
  40
  41 static const struct ccu_reset a80_resets[] = {
  42         [RST_BUS_MMC]           = RESET(0x5a0, BIT(8)),
  43         [RST_BUS_SPI0]          = RESET(0x5a0, BIT(20)),
  44         [RST_BUS_SPI1]          = RESET(0x5a0, BIT(21)),
  45         [RST_BUS_SPI2]          = RESET(0x5a0, BIT(22)),
  46         [RST_BUS_SPI3]          = RESET(0x5a0, BIT(23)),
  47
  48         [RST_BUS_I2C0]          = RESET(0x5b4, BIT(0)),
  49         [RST_BUS_I2C1]          = RESET(0x5b4, BIT(1)),
  50         [RST_BUS_I2C2]          = RESET(0x5b4, BIT(2)),
  51         [RST_BUS_I2C3]          = RESET(0x5b4, BIT(3)),
  52         [RST_BUS_I2C4]          = RESET(0x5b4, BIT(4)),
  53         [RST_BUS_UART0]         = RESET(0x5b4, BIT(16)),
  54         [RST_BUS_UART1]         = RESET(0x5b4, BIT(17)),
  55         [RST_BUS_UART2]         = RESET(0x5b4, BIT(18)),
  56         [RST_BUS_UART3]         = RESET(0x5b4, BIT(19)),
  57         [RST_BUS_UART4]         = RESET(0x5b4, BIT(20)),
  58         [RST_BUS_UART5]         = RESET(0x5b4, BIT(21)),
  59 };
  60
  61 static const struct ccu_clk_gate a80_mmc_gates[] = {
  62         [0]                     = GATE(0x0, BIT(16)),
  63         [1]                     = GATE(0x4, BIT(16)),
  64         [2]                     = GATE(0x8, BIT(16)),
  65         [3]                     = GATE(0xc, BIT(16)),
  66 };
  67
  68 static const struct ccu_reset a80_mmc_resets[] = {
  69         [0]                     = GATE(0x0, BIT(18)),
  70         [1]                     = GATE(0x4, BIT(18)),
  71         [2]                     = GATE(0x8, BIT(18)),
  72         [3]                     = GATE(0xc, BIT(18)),
  73 };
  74
  75 static const struct ccu_desc a80_ccu_desc = {
  76         .gates = a80_gates,
  77         .resets = a80_resets,
  78 };
  79
  80 static const struct ccu_desc a80_mmc_clk_desc = {
  81         .gates = a80_mmc_gates,
  82         .resets = a80_mmc_resets,
  83 };
  84
  85 static int a80_clk_bind(struct udevice *dev)
  86 {
  87         ulong count = ARRAY_SIZE(a80_resets);
  88
  89         if (device_is_compatible(dev, "allwinner,sun9i-a80-mmc-config-clk"))
  90                 count = ARRAY_SIZE(a80_mmc_resets);
  91
  92         return sunxi_reset_bind(dev, count);
  93 }
  94
  95 static const struct udevice_id a80_ccu_ids[] = {
  96         { .compatible = "allwinner,sun9i-a80-ccu",
  97           .data = (ulong)&a80_ccu_desc },
  98         { .compatible = "allwinner,sun9i-a80-mmc-config-clk",
  99           .data = (ulong)&a80_mmc_clk_desc },
 100         { }
 101 };
 102
 103 U_BOOT_DRIVER(clk_sun9i_a80) = {
 104         .name           = "sun9i_a80_ccu",
 105         .id             = UCLASS_CLK,
 106         .of_match       = a80_ccu_ids,
 107         .priv_auto      = sizeof(struct ccu_priv),
 108         .ops            = &sunxi_clk_ops,
 109         .probe          = sunxi_clk_probe,
 110         .bind           = a80_clk_bind,
 111 };