2 * SoC-specific code for tms320dm644x chips
4 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
5 * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
6 * Copyright (C) 2004 Texas Instruments.
8 * See file CREDITS for list of people who contributed to this
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.
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.
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.
27 #include <asm/arch/hardware.h>
30 #define PINMUX0_EMACEN (1 << 31)
31 #define PINMUX0_AECS5 (1 << 11)
32 #define PINMUX0_AECS4 (1 << 10)
34 #define PINMUX1_I2C (1 << 7)
35 #define PINMUX1_UART1 (1 << 1)
36 #define PINMUX1_UART0 (1 << 0)
39 void davinci_enable_uart0(void)
41 lpsc_on(DAVINCI_LPSC_UART0);
43 /* Bringup UART0 out of reset */
44 REG(UART0_PWREMU_MGMT) = 0x00006001;
46 /* Enable UART0 MUX lines */
47 REG(PINMUX1) |= PINMUX1_UART0;
50 #ifdef CONFIG_DRIVER_TI_EMAC
51 void davinci_enable_emac(void)
53 lpsc_on(DAVINCI_LPSC_EMAC);
54 lpsc_on(DAVINCI_LPSC_EMAC_WRAPPER);
55 lpsc_on(DAVINCI_LPSC_MDIO);
57 /* Enable GIO3.3V cells used for EMAC */
58 REG(VDD3P3V_PWDN) = 0;
61 REG(PINMUX0) |= PINMUX0_EMACEN;
65 #ifdef CONFIG_DRIVER_DAVINCI_I2C
66 void davinci_enable_i2c(void)
68 lpsc_on(DAVINCI_LPSC_I2C);
70 /* Enable I2C pin Mux */
71 REG(PINMUX1) |= PINMUX1_I2C;
75 void davinci_errata_workarounds(void)
78 * Workaround for TMS320DM6446 errata 1.3.22:
79 * PSC: PTSTAT Register Does Not Clear After Warm/Maximum Reset
80 * Revision(s) Affected: 1.3 and earlier
82 REG(PSC_SILVER_BULLET) = 0;
85 * Set the PR_OLD_COUNT bits in the Bus Burst Priority Register (PBBPR)
86 * as suggested in TMS320DM6446 errata 2.1.2:
88 * On DM6446 Silicon Revision 2.1 and earlier, under certain conditions
89 * low priority modules can occupy the bus and prevent high priority
90 * modules like the VPSS from getting the required DDR2 throughput.
91 * A hex value of 0x20 should provide a good ARM (cache enabled)
92 * performance and still allow good utilization by the VPSS or other