| John Rigby | a3f9d65 | 2011-04-19 10:42:40 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2009 ST-Ericsson |
| 3 | * |
| 4 | * See file CREDITS for list of people who contributed to this |
| 5 | * project. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; either version 2 of |
| 10 | * the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 20 | * MA 02111-1307 USA |
| 21 | */ |
| 22 | |
| 23 | #include <common.h> |
| 24 | #include <asm/io.h> |
| 25 | #include <asm/arch/hardware.h> |
| 26 | |
| 27 | DECLARE_GLOBAL_DATA_PTR; |
| 28 | |
| 29 | struct clkrst { |
| 30 | unsigned int pcken; |
| 31 | unsigned int pckdis; |
| 32 | unsigned int kcken; |
| 33 | unsigned int kckdis; |
| 34 | }; |
| 35 | |
| 36 | static unsigned int clkrst_base[] = { |
| 37 | U8500_CLKRST1_BASE, |
| 38 | U8500_CLKRST2_BASE, |
| 39 | U8500_CLKRST3_BASE, |
| 40 | 0, |
| 41 | U8500_CLKRST5_BASE, |
| 42 | U8500_CLKRST6_BASE, |
| 43 | U8500_CLKRST7_BASE, /* ED only */ |
| 44 | }; |
| 45 | |
| 46 | /* Turn on peripheral clock at PRCC level */ |
| 47 | void u8500_clock_enable(int periph, int cluster, int kern) |
| 48 | { |
| 49 | struct clkrst *clkrst = (struct clkrst *) clkrst_base[periph - 1]; |
| 50 | |
| 51 | if (kern != -1) |
| 52 | writel(1 << kern, &clkrst->kcken); |
| 53 | |
| 54 | if (cluster != -1) |
| 55 | writel(1 << cluster, &clkrst->pcken); |
| 56 | } |
| Mathieu J. Poirier | 2d8516bb | 2012-07-31 08:59:26 +0000 | [diff] [blame] | 57 | |
| 58 | void db8500_clocks_init(void) |
| 59 | { |
| 60 | /* |
| 61 | * Enable all clocks. This is u-boot, we can enable it all. There is no |
| 62 | * powersave in u-boot. |
| 63 | */ |
| 64 | |
| 65 | u8500_clock_enable(1, 9, -1); /* GPIO0 */ |
| 66 | u8500_clock_enable(2, 11, -1);/* GPIO1 */ |
| 67 | u8500_clock_enable(3, 8, -1); /* GPIO2 */ |
| 68 | u8500_clock_enable(5, 1, -1); /* GPIO3 */ |
| 69 | u8500_clock_enable(3, 6, 6); /* UART2 */ |
| 70 | u8500_clock_enable(3, 3, 3); /* I2C0 */ |
| 71 | u8500_clock_enable(1, 5, 5); /* SDI0 */ |
| 72 | u8500_clock_enable(2, 4, 2); /* SDI4 */ |
| 73 | u8500_clock_enable(6, 6, -1); /* MTU0 */ |
| 74 | u8500_clock_enable(3, 4, 4); /* SDI2 */ |
| 75 | |
| 76 | /* |
| 77 | * Enabling clocks for all devices which are AMBA devices in the |
| 78 | * kernel. Otherwise they will not get probe()'d because the |
| 79 | * peripheral ID register will not be powered. |
| 80 | */ |
| 81 | |
| 82 | /* XXX: some of these differ between ED/V1 */ |
| 83 | |
| 84 | u8500_clock_enable(1, 1, 1); /* UART1 */ |
| 85 | u8500_clock_enable(1, 0, 0); /* UART0 */ |
| 86 | u8500_clock_enable(3, 2, 2); /* SSP1 */ |
| 87 | u8500_clock_enable(3, 1, 1); /* SSP0 */ |
| 88 | u8500_clock_enable(2, 8, -1); /* SPI0 */ |
| 89 | u8500_clock_enable(2, 5, 3); /* MSP2 */ |
| 90 | } |