projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| f7904368 DB |
1 | /* |
| 2 | * SoC-specific code for tms320dm644x chips | |
| 3 | * | |
| 4 | * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net> | |
| 5 | * Copyright (C) 2008 Lyrtech <www.lyrtech.com> | |
| 6 | * Copyright (C) 2004 Texas Instruments. | |
| 7 | * | |
| 8 | * See file CREDITS for list of people who contributed to this | |
| 9 | * project. | |
| 10 | * | |
| 11 | * This program is free software; you can redistribute it and/or modify | |
| 12 | * it under the terms of the GNU General Public License as published by | |
| 13 | * the Free Software Foundation; either version 2 of the License, or | |
| 14 | * (at your option) any later version. | |
| 15 | * | |
| 16 | * This program is distributed in the hope that it will be useful, | |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 19 | * GNU General Public License for more details. | |
| 20 | * | |
| 21 | * You should have received a copy of the GNU General Public License | |
| 22 | * along with this program; if not, write to the Free Software | |
| 23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 24 | */ | |
| 25 | ||
| 26 | #include <common.h> | |
| 27 | #include <asm/arch/hardware.h> | |
| 28 | ||
| 29 | ||
| 30 | #define PINMUX0_EMACEN (1 << 31) | |
| 31 | #define PINMUX0_AECS5 (1 << 11) | |
| 32 | #define PINMUX0_AECS4 (1 << 10) | |
| 33 | ||
| 34 | #define PINMUX1_I2C (1 << 7) | |
| 35 | #define PINMUX1_UART1 (1 << 1) | |
| 36 | #define PINMUX1_UART0 (1 << 0) | |
| 37 | ||
| 38 | ||
| 39 | void davinci_enable_uart0(void) | |
| 40 | { | |
| 41 | lpsc_on(DAVINCI_LPSC_UART0); | |
| 42 | ||
| 43 | /* Bringup UART0 out of reset */ | |
| 44 | REG(UART0_PWREMU_MGMT) = 0x0000e003; | |
| 45 | ||
| 46 | /* Enable UART0 MUX lines */ | |
| 47 | REG(PINMUX1) |= PINMUX1_UART0; | |
| 48 | } | |
| 49 | ||
| 50 | #ifdef CONFIG_DRIVER_TI_EMAC | |
| 51 | void davinci_enable_emac(void) | |
| 52 | { | |
| 53 | lpsc_on(DAVINCI_LPSC_EMAC); | |
| 54 | lpsc_on(DAVINCI_LPSC_EMAC_WRAPPER); | |
| 55 | lpsc_on(DAVINCI_LPSC_MDIO); | |
| 56 | ||
| 57 | /* Enable GIO3.3V cells used for EMAC */ | |
| 58 | REG(VDD3P3V_PWDN) = 0; | |
| 59 | ||
| 60 | /* Enable EMAC. */ | |
| 61 | REG(PINMUX0) |= PINMUX0_EMACEN; | |
| 62 | } | |
| 63 | #endif | |
| 64 | ||
| 65 | void davinci_enable_i2c(void) | |
| 66 | { | |
| 67 | lpsc_on(DAVINCI_LPSC_I2C); | |
| 68 | ||
| 69 | /* Enable I2C pin Mux */ | |
| 70 | REG(PINMUX1) |= PINMUX1_I2C; | |
| 71 | } | |
| 72 | ||
| 73 | void davinci_errata_workarounds(void) | |
| 74 | { | |
| 75 | /* | |
| 76 | * Workaround for TMS320DM6446 errata 1.3.22: | |
| 77 | * PSC: PTSTAT Register Does Not Clear After Warm/Maximum Reset | |
| 78 | * Revision(s) Affected: 1.3 and earlier | |
| 79 | */ | |
| 80 | REG(PSC_SILVER_BULLET) = 0; | |
| 81 | ||
| 82 | /* | |
| 83 | * Set the PR_OLD_COUNT bits in the Bus Burst Priority Register (PBBPR) | |
| 84 | * as suggested in TMS320DM6446 errata 2.1.2: | |
| 85 | * | |
| 86 | * On DM6446 Silicon Revision 2.1 and earlier, under certain conditions | |
| 87 | * low priority modules can occupy the bus and prevent high priority | |
| 88 | * modules like the VPSS from getting the required DDR2 throughput. | |
| 89 | * A hex value of 0x20 should provide a good ARM (cache enabled) | |
| 90 | * performance and still allow good utilization by the VPSS or other | |
| 91 | * modules. | |
| 92 | */ | |
| 93 | REG(VBPR) = 0x20; | |
| 94 | } |