| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | /* |
| 2 | * TI DaVinci clock definitions |
| 3 | * |
| 4 | * Copyright (C) 2006-2007 Texas Instruments. |
| 5 | * Copyright (C) 2008-2009 Deep Root Systems, LLC |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #ifndef __ARCH_ARM_DAVINCI_CLOCK_H |
| 13 | #define __ARCH_ARM_DAVINCI_CLOCK_H |
| 14 | |
| 15 | /* PLL/Reset register offsets */ |
| 16 | #define PLLCTL 0x100 |
| 17 | #define PLLCTL_PLLEN BIT(0) |
| 18 | #define PLLCTL_PLLPWRDN BIT(1) |
| 19 | #define PLLCTL_PLLRST BIT(3) |
| 20 | #define PLLCTL_PLLDIS BIT(4) |
| 21 | #define PLLCTL_PLLENSRC BIT(5) |
| 22 | #define PLLCTL_CLKMODE BIT(8) |
| 23 | |
| 24 | #define PLLM 0x110 |
| 25 | #define PLLM_PLLM_MASK 0xff |
| 26 | |
| 27 | #define PREDIV 0x114 |
| 28 | #define PLLDIV1 0x118 |
| 29 | #define PLLDIV2 0x11c |
| 30 | #define PLLDIV3 0x120 |
| 31 | #define POSTDIV 0x128 |
| 32 | #define BPDIV 0x12c |
| 33 | #define PLLCMD 0x138 |
| 34 | #define PLLSTAT 0x13c |
| 35 | #define PLLALNCTL 0x140 |
| 36 | #define PLLDCHANGE 0x144 |
| 37 | #define PLLCKEN 0x148 |
| 38 | #define PLLCKSTAT 0x14c |
| 39 | #define PLLSYSTAT 0x150 |
| 40 | #define PLLDIV4 0x160 |
| 41 | #define PLLDIV5 0x164 |
| 42 | #define PLLDIV6 0x168 |
| 43 | #define PLLDIV7 0x16c |
| 44 | #define PLLDIV8 0x170 |
| 45 | #define PLLDIV9 0x174 |
| 46 | #define PLLDIV_EN BIT(15) |
| 47 | #define PLLDIV_RATIO_MASK 0x1f |
| 48 | |
| 49 | /* |
| 50 | * OMAP-L138 system reference guide recommends a wait for 4 OSCIN/CLKIN |
| 51 | * cycles to ensure that the PLLC has switched to bypass mode. Delay of 1us |
| 52 | * ensures we are good for all > 4MHz OSCIN/CLKIN inputs. Typically the input |
| 53 | * is ~25MHz. Units are micro seconds. |
| 54 | */ |
| 55 | #define PLL_BYPASS_TIME 1 |
| 56 | /* From OMAP-L138 datasheet table 6-4. Units are micro seconds */ |
| 57 | #define PLL_RESET_TIME 1 |
| 58 | /* |
| 59 | * From OMAP-L138 datasheet table 6-4; assuming prediv = 1, sqrt(pllm) = 4 |
| 60 | * Units are micro seconds. |
| 61 | */ |
| 62 | #define PLL_LOCK_TIME 20 |
| 63 | |
| 64 | #endif |