drivers/clk/sunxi/clk_v3s.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/sun8i-v3s-ccu.h>
  13 #include <dt-bindings/reset/sun8i-v3s-ccu.h>
  14 #include <linux/bitops.h>
  15
  16 static struct ccu_clk_gate v3s_gates[] = {
  17         [CLK_BUS_MMC0]          = GATE(0x060, BIT(8)),
  18         [CLK_BUS_MMC1]          = GATE(0x060, BIT(9)),
  19         [CLK_BUS_MMC2]          = GATE(0x060, BIT(10)),
  20         [CLK_BUS_SPI0]          = GATE(0x060, BIT(20)),
  21         [CLK_BUS_OTG]           = GATE(0x060, BIT(24)),
  22
  23         [CLK_BUS_UART0]         = GATE(0x06c, BIT(16)),
  24         [CLK_BUS_UART1]         = GATE(0x06c, BIT(17)),
  25         [CLK_BUS_UART2]         = GATE(0x06c, BIT(18)),
  26
  27         [CLK_SPI0]              = GATE(0x0a0, BIT(31)),
  28
  29         [CLK_USB_PHY0]          = GATE(0x0cc, BIT(8)),
  30 };
  31
  32 static struct ccu_reset v3s_resets[] = {
  33         [RST_USB_PHY0]          = RESET(0x0cc, BIT(0)),
  34
  35         [RST_BUS_MMC0]          = RESET(0x2c0, BIT(8)),
  36         [RST_BUS_MMC1]          = RESET(0x2c0, BIT(9)),
  37         [RST_BUS_MMC2]          = RESET(0x2c0, BIT(10)),
  38         [RST_BUS_SPI0]          = RESET(0x2c0, BIT(20)),
  39         [RST_BUS_OTG]           = RESET(0x2c0, BIT(24)),
  40
  41         [RST_BUS_UART0]         = RESET(0x2d8, BIT(16)),
  42         [RST_BUS_UART1]         = RESET(0x2d8, BIT(17)),
  43         [RST_BUS_UART2]         = RESET(0x2d8, BIT(18)),
  44 };
  45
  46 static const struct ccu_desc v3s_ccu_desc = {
  47         .gates = v3s_gates,
  48         .resets = v3s_resets,
  49 };
  50
  51 static int v3s_clk_bind(struct udevice *dev)
  52 {
  53         return sunxi_reset_bind(dev, ARRAY_SIZE(v3s_resets));
  54 }
  55
  56 static const struct udevice_id v3s_clk_ids[] = {
  57         { .compatible = "allwinner,sun8i-v3s-ccu",
  58           .data = (ulong)&v3s_ccu_desc },
  59         { .compatible = "allwinner,sun8i-v3-ccu",
  60           .data = (ulong)&v3s_ccu_desc },
  61         { }
  62 };
  63
  64 U_BOOT_DRIVER(clk_sun8i_v3s) = {
  65         .name           = "sun8i_v3s_ccu",
  66         .id             = UCLASS_CLK,
  67         .of_match       = v3s_clk_ids,
  68         .priv_auto_alloc_size   = sizeof(struct ccu_priv),
  69         .ops            = &sunxi_clk_ops,
  70         .probe          = sunxi_clk_probe,
  71         .bind           = v3s_clk_bind,
  72 };