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_MMC] = GATE(0x580, BIT(8)), 17 18 [CLK_BUS_UART0] = GATE(0x594, BIT(16)), 19 [CLK_BUS_UART1] = GATE(0x594, BIT(17)), 20 [CLK_BUS_UART2] = GATE(0x594, BIT(18)), 21 [CLK_BUS_UART3] = GATE(0x594, BIT(19)), 22 [CLK_BUS_UART4] = GATE(0x594, BIT(20)), 23 [CLK_BUS_UART5] = GATE(0x594, BIT(21)), 24 }; 25 26 static const struct ccu_reset a80_resets[] = { 27 [RST_BUS_MMC] = RESET(0x5a0, BIT(8)), 28 29 [RST_BUS_UART0] = RESET(0x5b4, BIT(16)), 30 [RST_BUS_UART1] = RESET(0x5b4, BIT(17)), 31 [RST_BUS_UART2] = RESET(0x5b4, BIT(18)), 32 [RST_BUS_UART3] = RESET(0x5b4, BIT(19)), 33 [RST_BUS_UART4] = RESET(0x5b4, BIT(20)), 34 [RST_BUS_UART5] = RESET(0x5b4, BIT(21)), 35 }; 36 37 static const struct ccu_clk_gate a80_mmc_gates[] = { 38 [0] = GATE(0x0, BIT(16)), 39 [1] = GATE(0x4, BIT(16)), 40 [2] = GATE(0x8, BIT(16)), 41 [3] = GATE(0xc, BIT(16)), 42 }; 43 44 static const struct ccu_reset a80_mmc_resets[] = { 45 [0] = GATE(0x0, BIT(18)), 46 [1] = GATE(0x4, BIT(18)), 47 [2] = GATE(0x8, BIT(18)), 48 [3] = GATE(0xc, BIT(18)), 49 }; 50 51 static const struct ccu_desc a80_ccu_desc = { 52 .gates = a80_gates, 53 .resets = a80_resets, 54 }; 55 56 static const struct ccu_desc a80_mmc_clk_desc = { 57 .gates = a80_mmc_gates, 58 .resets = a80_mmc_resets, 59 }; 60 61 static int a80_clk_bind(struct udevice *dev) 62 { 63 ulong count = ARRAY_SIZE(a80_resets); 64 65 if (device_is_compatible(dev, "allwinner,sun9i-a80-mmc-config-clk")) 66 count = ARRAY_SIZE(a80_mmc_resets); 67 68 return sunxi_reset_bind(dev, count); 69 } 70 71 static const struct udevice_id a80_ccu_ids[] = { 72 { .compatible = "allwinner,sun9i-a80-ccu", 73 .data = (ulong)&a80_ccu_desc }, 74 { .compatible = "allwinner,sun9i-a80-mmc-config-clk", 75 .data = (ulong)&a80_mmc_clk_desc }, 76 { } 77 }; 78 79 U_BOOT_DRIVER(clk_sun9i_a80) = { 80 .name = "sun9i_a80_ccu", 81 .id = UCLASS_CLK, 82 .of_match = a80_ccu_ids, 83 .priv_auto_alloc_size = sizeof(struct ccu_priv), 84 .ops = &sunxi_clk_ops, 85 .probe = sunxi_clk_probe, 86 .bind = a80_clk_bind, 87 }; 88