blob: bb105b56ee74475c46bcedc394b166c8c437d583 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*
* SoC-specific code for tms320dm644x chips
*
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
* Copyright (C) 2008 Lyrtech <www.lyrtech.com>
* Copyright (C) 2004 Texas Instruments.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <common.h>
#include <asm/arch/hardware.h>
#define PINMUX0_EMACEN (1 << 31)
#define PINMUX0_AECS5 (1 << 11)
#define PINMUX0_AECS4 (1 << 10)
#define PINMUX1_I2C (1 << 7)
#define PINMUX1_UART1 (1 << 1)
#define PINMUX1_UART0 (1 << 0)
void davinci_enable_uart0(void)
{
lpsc_on(DAVINCI_LPSC_UART0);
/* Bringup UART0 out of reset */
REG(UART0_PWREMU_MGMT) = 0x00006001;
/* Enable UART0 MUX lines */
REG(PINMUX1) |= PINMUX1_UART0;
}
#ifdef CONFIG_DRIVER_TI_EMAC
void davinci_enable_emac(void)
{
lpsc_on(DAVINCI_LPSC_EMAC);
lpsc_on(DAVINCI_LPSC_EMAC_WRAPPER);
lpsc_on(DAVINCI_LPSC_MDIO);
/* Enable GIO3.3V cells used for EMAC */
REG(VDD3P3V_PWDN) = 0;
/* Enable EMAC. */
REG(PINMUX0) |= PINMUX0_EMACEN;
}
#endif
#ifdef CONFIG_DRIVER_DAVINCI_I2C
void davinci_enable_i2c(void)
{
lpsc_on(DAVINCI_LPSC_I2C);
/* Enable I2C pin Mux */
REG(PINMUX1) |= PINMUX1_I2C;
}
#endif
void davinci_errata_workarounds(void)
{
/*
* Workaround for TMS320DM6446 errata 1.3.22:
* PSC: PTSTAT Register Does Not Clear After Warm/Maximum Reset
* Revision(s) Affected: 1.3 and earlier
*/
REG(PSC_SILVER_BULLET) = 0;
/*
* Set the PR_OLD_COUNT bits in the Bus Burst Priority Register (PBBPR)
* as suggested in TMS320DM6446 errata 2.1.2:
*
* On DM6446 Silicon Revision 2.1 and earlier, under certain conditions
* low priority modules can occupy the bus and prevent high priority
* modules like the VPSS from getting the required DDR2 throughput.
* A hex value of 0x20 should provide a good ARM (cache enabled)
* performance and still allow good utilization by the VPSS or other
* modules.
*/
REG(VBPR) = 0x20;
}
|
