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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 | * | |
1a459660 | 8 | * SPDX-License-Identifier: GPL-2.0+ |
f7904368 DB |
9 | */ |
10 | ||
11 | #include <common.h> | |
12 | #include <asm/arch/hardware.h> | |
13 | ||
14 | ||
15 | #define PINMUX0_EMACEN (1 << 31) | |
16 | #define PINMUX0_AECS5 (1 << 11) | |
17 | #define PINMUX0_AECS4 (1 << 10) | |
18 | ||
19 | #define PINMUX1_I2C (1 << 7) | |
20 | #define PINMUX1_UART1 (1 << 1) | |
21 | #define PINMUX1_UART0 (1 << 0) | |
22 | ||
23 | ||
24 | void davinci_enable_uart0(void) | |
25 | { | |
26 | lpsc_on(DAVINCI_LPSC_UART0); | |
27 | ||
28 | /* Bringup UART0 out of reset */ | |
bd36fdc1 | 29 | REG(UART0_PWREMU_MGMT) = 0x00006001; |
f7904368 DB |
30 | |
31 | /* Enable UART0 MUX lines */ | |
32 | REG(PINMUX1) |= PINMUX1_UART0; | |
33 | } | |
34 | ||
35 | #ifdef CONFIG_DRIVER_TI_EMAC | |
36 | void davinci_enable_emac(void) | |
37 | { | |
38 | lpsc_on(DAVINCI_LPSC_EMAC); | |
39 | lpsc_on(DAVINCI_LPSC_EMAC_WRAPPER); | |
40 | lpsc_on(DAVINCI_LPSC_MDIO); | |
41 | ||
42 | /* Enable GIO3.3V cells used for EMAC */ | |
43 | REG(VDD3P3V_PWDN) = 0; | |
44 | ||
45 | /* Enable EMAC. */ | |
46 | REG(PINMUX0) |= PINMUX0_EMACEN; | |
47 | } | |
48 | #endif | |
49 | ||
e8459dcc | 50 | #ifdef CONFIG_SYS_I2C_DAVINCI |
f7904368 DB |
51 | void davinci_enable_i2c(void) |
52 | { | |
53 | lpsc_on(DAVINCI_LPSC_I2C); | |
54 | ||
55 | /* Enable I2C pin Mux */ | |
56 | REG(PINMUX1) |= PINMUX1_I2C; | |
57 | } | |
bd36fdc1 | 58 | #endif |
f7904368 DB |
59 | |
60 | void davinci_errata_workarounds(void) | |
61 | { | |
62 | /* | |
63 | * Workaround for TMS320DM6446 errata 1.3.22: | |
64 | * PSC: PTSTAT Register Does Not Clear After Warm/Maximum Reset | |
65 | * Revision(s) Affected: 1.3 and earlier | |
66 | */ | |
67 | REG(PSC_SILVER_BULLET) = 0; | |
68 | ||
69 | /* | |
70 | * Set the PR_OLD_COUNT bits in the Bus Burst Priority Register (PBBPR) | |
71 | * as suggested in TMS320DM6446 errata 2.1.2: | |
72 | * | |
73 | * On DM6446 Silicon Revision 2.1 and earlier, under certain conditions | |
74 | * low priority modules can occupy the bus and prevent high priority | |
75 | * modules like the VPSS from getting the required DDR2 throughput. | |
76 | * A hex value of 0x20 should provide a good ARM (cache enabled) | |
77 | * performance and still allow good utilization by the VPSS or other | |
78 | * modules. | |
79 | */ | |
80 | REG(VBPR) = 0x20; | |
81 | } |