drivers/clk/sunxi/clk_h6.c

   1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
   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/sun50i-h6-ccu.h>
  13 #include <dt-bindings/reset/sun50i-h6-ccu.h>
  14
  15 static struct ccu_clk_gate h6_gates[] = {
  16         [CLK_BUS_MMC0]          = GATE(0x84c, BIT(0)),
  17         [CLK_BUS_MMC1]          = GATE(0x84c, BIT(1)),
  18         [CLK_BUS_MMC2]          = GATE(0x84c, BIT(2)),
  19         [CLK_BUS_UART0]         = GATE(0x90c, BIT(0)),
  20         [CLK_BUS_UART1]         = GATE(0x90c, BIT(1)),
  21         [CLK_BUS_UART2]         = GATE(0x90c, BIT(2)),
  22         [CLK_BUS_UART3]         = GATE(0x90c, BIT(3)),
  23 };
  24
  25 static struct ccu_reset h6_resets[] = {
  26         [RST_BUS_MMC0]          = RESET(0x84c, BIT(16)),
  27         [RST_BUS_MMC1]          = RESET(0x84c, BIT(17)),
  28         [RST_BUS_MMC2]          = RESET(0x84c, BIT(18)),
  29         [RST_BUS_UART0]         = RESET(0x90c, BIT(16)),
  30         [RST_BUS_UART1]         = RESET(0x90c, BIT(17)),
  31         [RST_BUS_UART2]         = RESET(0x90c, BIT(18)),
  32         [RST_BUS_UART3]         = RESET(0x90c, BIT(19)),
  33 };
  34
  35 static const struct ccu_desc h6_ccu_desc = {
  36         .gates = h6_gates,
  37         .resets = h6_resets,
  38 };
  39
  40 static int h6_clk_bind(struct udevice *dev)
  41 {
  42         return sunxi_reset_bind(dev, ARRAY_SIZE(h6_resets));
  43 }
  44
  45 static const struct udevice_id h6_ccu_ids[] = {
  46         { .compatible = "allwinner,sun50i-h6-ccu",
  47           .data = (ulong)&h6_ccu_desc },
  48         { }
  49 };
  50
  51 U_BOOT_DRIVER(clk_sun50i_h6) = {
  52         .name           = "sun50i_h6_ccu",
  53         .id             = UCLASS_CLK,
  54         .of_match       = h6_ccu_ids,
  55         .priv_auto_alloc_size   = sizeof(struct ccu_priv),
  56         .ops            = &sunxi_clk_ops,
  57         .probe          = sunxi_clk_probe,
  58         .bind           = h6_clk_bind,
  59 };