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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm/arch-l7200/pmu.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-arm/arch-l7200/pmu.h')
-rw-r--r--include/asm-arm/arch-l7200/pmu.h125
1 files changed, 125 insertions, 0 deletions
diff --git a/include/asm-arm/arch-l7200/pmu.h b/include/asm-arm/arch-l7200/pmu.h
new file mode 100644
index 000000000000..57faea76d1b3
--- /dev/null
+++ b/include/asm-arm/arch-l7200/pmu.h
@@ -0,0 +1,125 @@
1/****************************************************************************/
2/*
3 * linux/include/asm-arm/arch-l7200/pmu.h
4 *
5 * Registers and helper functions for the L7200 Link-Up Systems
6 * Power Management Unit (PMU).
7 *
8 * (C) Copyright 2000, S A McConnell (samcconn@cotw.com)
9 *
10 * This file is subject to the terms and conditions of the GNU General Public
11 * License. See the file COPYING in the main directory of this archive for
12 * more details.
13 */
14
15/****************************************************************************/
16
17#define PMU_OFF 0x00050000 /* Offset from IO_START to the PMU registers. */
18
19/* IO_START and IO_BASE are defined in hardware.h */
20
21#define PMU_START (IO_START + PMU_OFF) /* Physical addr. of the PMU reg. */
22#define PMU_BASE (IO_BASE + PMU_OFF) /* Virtual addr. of the PMU reg. */
23
24
25/* Define the PMU registers for use by device drivers and the kernel. */
26
27typedef struct {
28 unsigned int CURRENT; /* Current configuration register */
29 unsigned int NEXT; /* Next configuration register */
30 unsigned int reserved;
31 unsigned int RUN; /* Run configuration register */
32 unsigned int COMM; /* Configuration command register */
33 unsigned int SDRAM; /* SDRAM configuration bypass register */
34} pmu_interface;
35
36#define PMU ((volatile pmu_interface *)(PMU_BASE))
37
38
39/* Macro's for reading the common register fields. */
40
41#define GET_TRANSOP(reg) ((reg >> 25) & 0x03) /* Bits 26-25 */
42#define GET_OSCEN(reg) ((reg >> 16) & 0x01)
43#define GET_OSCMUX(reg) ((reg >> 15) & 0x01)
44#define GET_PLLMUL(reg) ((reg >> 9) & 0x3f) /* Bits 14-9 */
45#define GET_PLLEN(reg) ((reg >> 8) & 0x01)
46#define GET_PLLMUX(reg) ((reg >> 7) & 0x01)
47#define GET_BCLK_DIV(reg) ((reg >> 3) & 0x03) /* Bits 4-3 */
48#define GET_SDRB_SEL(reg) ((reg >> 2) & 0x01)
49#define GET_SDRF_SEL(reg) ((reg >> 1) & 0x01)
50#define GET_FASTBUS(reg) (reg & 0x1)
51
52/* CFG_NEXT register */
53
54#define CFG_NEXT_CLOCKRECOVERY ((PMU->NEXT >> 18) & 0x7f) /* Bits 24-18 */
55#define CFG_NEXT_INTRET ((PMU->NEXT >> 17) & 0x01)
56#define CFG_NEXT_SDR_STOP ((PMU->NEXT >> 6) & 0x01)
57#define CFG_NEXT_SYSCLKEN ((PMU->NEXT >> 5) & 0x01)
58
59/* Useful field values that can be used to construct the
60 * CFG_NEXT and CFG_RUN registers.
61 */
62
63#define TRANSOP_NOP 0<<25 /* NOCHANGE_NOSTALL */
64#define NOCHANGE_STALL 1<<25
65#define CHANGE_NOSTALL 2<<25
66#define CHANGE_STALL 3<<25
67
68#define INTRET 1<<17
69#define OSCEN 1<<16
70#define OSCMUX 1<<15
71
72/* PLL frequencies */
73
74#define PLLMUL_0 0<<9 /* 3.6864 MHz */
75#define PLLMUL_1 1<<9 /* ?????? MHz */
76#define PLLMUL_5 5<<9 /* 18.432 MHz */
77#define PLLMUL_10 10<<9 /* 36.864 MHz */
78#define PLLMUL_18 18<<9 /* ?????? MHz */
79#define PLLMUL_20 20<<9 /* 73.728 MHz */
80#define PLLMUL_32 32<<9 /* ?????? MHz */
81#define PLLMUL_35 35<<9 /* 129.024 MHz */
82#define PLLMUL_36 36<<9 /* ?????? MHz */
83#define PLLMUL_39 39<<9 /* ?????? MHz */
84#define PLLMUL_40 40<<9 /* 147.456 MHz */
85
86/* Clock recovery times */
87
88#define CRCLOCK_1 1<<18
89#define CRCLOCK_2 2<<18
90#define CRCLOCK_4 4<<18
91#define CRCLOCK_8 8<<18
92#define CRCLOCK_16 16<<18
93#define CRCLOCK_32 32<<18
94#define CRCLOCK_63 63<<18
95#define CRCLOCK_127 127<<18
96
97#define PLLEN 1<<8
98#define PLLMUX 1<<7
99#define SDR_STOP 1<<6
100#define SYSCLKEN 1<<5
101
102#define BCLK_DIV_4 2<<3
103#define BCLK_DIV_2 1<<3
104#define BCLK_DIV_1 0<<3
105
106#define SDRB_SEL 1<<2
107#define SDRF_SEL 1<<1
108#define FASTBUS 1<<0
109
110
111/* CFG_SDRAM */
112
113#define SDRREFFQ 1<<0 /* Only if SDRSTOPRQ is not set. */
114#define SDRREFACK 1<<1 /* Read-only */
115#define SDRSTOPRQ 1<<2 /* Only if SDRREFFQ is not set. */
116#define SDRSTOPACK 1<<3 /* Read-only */
117#define PICEN 1<<4 /* Enable Co-procesor */
118#define PICTEST 1<<5
119
120#define GET_SDRREFFQ ((PMU->SDRAM >> 0) & 0x01)
121#define GET_SDRREFACK ((PMU->SDRAM >> 1) & 0x01) /* Read-only */
122#define GET_SDRSTOPRQ ((PMU->SDRAM >> 2) & 0x01)
123#define GET_SDRSTOPACK ((PMU->SDRAM >> 3) & 0x01) /* Read-only */
124#define GET_PICEN ((PMU->SDRAM >> 4) & 0x01)
125#define GET_PICTEST ((PMU->SDRAM >> 5) & 0x01)