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authorRoger Quadros <rogerq@ti.com>2015-07-10 08:23:29 -0400
committerRoger Quadros <rogerq@ti.com>2016-04-15 04:51:02 -0400
commitfabe7d7756d17f5da4bd80fa2373c4bd93ed39e5 (patch)
tree26dfb1b4992f07a7c2ab741b62444894fe677907
parent58bc67fc32b1c67fb045f4828a67134dc8fee631 (diff)
ARM: OMAP2+: gpmc: Add gpmc timings and settings to platform data
Add device_timings, gpmc_timings and gpmc_setting to gpmc platform data. Signed-off-by: Roger Quadros <rogerq@ti.com> Acked-by: Tony Lindgren <tony@atomide.com>
-rw-r--r--include/linux/omap-gpmc.h139
-rw-r--r--include/linux/platform_data/gpmc-omap.h142
2 files changed, 142 insertions, 139 deletions
diff --git a/include/linux/omap-gpmc.h b/include/linux/omap-gpmc.h
index 45d9075be1e5..2dcef1c8c8d4 100644
--- a/include/linux/omap-gpmc.h
+++ b/include/linux/omap-gpmc.h
@@ -14,145 +14,6 @@
14#define GPMC_IRQ_FIFOEVENTENABLE 0x01 14#define GPMC_IRQ_FIFOEVENTENABLE 0x01
15#define GPMC_IRQ_COUNT_EVENT 0x02 15#define GPMC_IRQ_COUNT_EVENT 0x02
16 16
17#define GPMC_BURST_4 4 /* 4 word burst */
18#define GPMC_BURST_8 8 /* 8 word burst */
19#define GPMC_BURST_16 16 /* 16 word burst */
20#define GPMC_DEVWIDTH_8BIT 1 /* 8-bit device width */
21#define GPMC_DEVWIDTH_16BIT 2 /* 16-bit device width */
22#define GPMC_MUX_AAD 1 /* Addr-Addr-Data multiplex */
23#define GPMC_MUX_AD 2 /* Addr-Data multiplex */
24
25/* bool type time settings */
26struct gpmc_bool_timings {
27 bool cycle2cyclediffcsen;
28 bool cycle2cyclesamecsen;
29 bool we_extra_delay;
30 bool oe_extra_delay;
31 bool adv_extra_delay;
32 bool cs_extra_delay;
33 bool time_para_granularity;
34};
35
36/*
37 * Note that all values in this struct are in nanoseconds except sync_clk
38 * (which is in picoseconds), while the register values are in gpmc_fck cycles.
39 */
40struct gpmc_timings {
41 /* Minimum clock period for synchronous mode (in picoseconds) */
42 u32 sync_clk;
43
44 /* Chip-select signal timings corresponding to GPMC_CS_CONFIG2 */
45 u32 cs_on; /* Assertion time */
46 u32 cs_rd_off; /* Read deassertion time */
47 u32 cs_wr_off; /* Write deassertion time */
48
49 /* ADV signal timings corresponding to GPMC_CONFIG3 */
50 u32 adv_on; /* Assertion time */
51 u32 adv_rd_off; /* Read deassertion time */
52 u32 adv_wr_off; /* Write deassertion time */
53 u32 adv_aad_mux_on; /* ADV assertion time for AAD */
54 u32 adv_aad_mux_rd_off; /* ADV read deassertion time for AAD */
55 u32 adv_aad_mux_wr_off; /* ADV write deassertion time for AAD */
56
57 /* WE signals timings corresponding to GPMC_CONFIG4 */
58 u32 we_on; /* WE assertion time */
59 u32 we_off; /* WE deassertion time */
60
61 /* OE signals timings corresponding to GPMC_CONFIG4 */
62 u32 oe_on; /* OE assertion time */
63 u32 oe_off; /* OE deassertion time */
64 u32 oe_aad_mux_on; /* OE assertion time for AAD */
65 u32 oe_aad_mux_off; /* OE deassertion time for AAD */
66
67 /* Access time and cycle time timings corresponding to GPMC_CONFIG5 */
68 u32 page_burst_access; /* Multiple access word delay */
69 u32 access; /* Start-cycle to first data valid delay */
70 u32 rd_cycle; /* Total read cycle time */
71 u32 wr_cycle; /* Total write cycle time */
72
73 u32 bus_turnaround;
74 u32 cycle2cycle_delay;
75
76 u32 wait_monitoring;
77 u32 clk_activation;
78
79 /* The following are only on OMAP3430 */
80 u32 wr_access; /* WRACCESSTIME */
81 u32 wr_data_mux_bus; /* WRDATAONADMUXBUS */
82
83 struct gpmc_bool_timings bool_timings;
84};
85
86/* Device timings in picoseconds */
87struct gpmc_device_timings {
88 u32 t_ceasu; /* address setup to CS valid */
89 u32 t_avdasu; /* address setup to ADV valid */
90 /* XXX: try to combine t_avdp_r & t_avdp_w. Issue is
91 * of tusb using these timings even for sync whilst
92 * ideally for adv_rd/(wr)_off it should have considered
93 * t_avdh instead. This indirectly necessitates r/w
94 * variations of t_avdp as it is possible to have one
95 * sync & other async
96 */
97 u32 t_avdp_r; /* ADV low time (what about t_cer ?) */
98 u32 t_avdp_w;
99 u32 t_aavdh; /* address hold time */
100 u32 t_oeasu; /* address setup to OE valid */
101 u32 t_aa; /* access time from ADV assertion */
102 u32 t_iaa; /* initial access time */
103 u32 t_oe; /* access time from OE assertion */
104 u32 t_ce; /* access time from CS asertion */
105 u32 t_rd_cycle; /* read cycle time */
106 u32 t_cez_r; /* read CS deassertion to high Z */
107 u32 t_cez_w; /* write CS deassertion to high Z */
108 u32 t_oez; /* OE deassertion to high Z */
109 u32 t_weasu; /* address setup to WE valid */
110 u32 t_wpl; /* write assertion time */
111 u32 t_wph; /* write deassertion time */
112 u32 t_wr_cycle; /* write cycle time */
113
114 u32 clk;
115 u32 t_bacc; /* burst access valid clock to output delay */
116 u32 t_ces; /* CS setup time to clk */
117 u32 t_avds; /* ADV setup time to clk */
118 u32 t_avdh; /* ADV hold time from clk */
119 u32 t_ach; /* address hold time from clk */
120 u32 t_rdyo; /* clk to ready valid */
121
122 u32 t_ce_rdyz; /* XXX: description ?, or use t_cez instead */
123 u32 t_ce_avd; /* CS on to ADV on delay */
124
125 /* XXX: check the possibility of combining
126 * cyc_aavhd_oe & cyc_aavdh_we
127 */
128 u8 cyc_aavdh_oe;/* read address hold time in cycles */
129 u8 cyc_aavdh_we;/* write address hold time in cycles */
130 u8 cyc_oe; /* access time from OE assertion in cycles */
131 u8 cyc_wpl; /* write deassertion time in cycles */
132 u32 cyc_iaa; /* initial access time in cycles */
133
134 /* extra delays */
135 bool ce_xdelay;
136 bool avd_xdelay;
137 bool oe_xdelay;
138 bool we_xdelay;
139};
140
141struct gpmc_settings {
142 bool burst_wrap; /* enables wrap bursting */
143 bool burst_read; /* enables read page/burst mode */
144 bool burst_write; /* enables write page/burst mode */
145 bool device_nand; /* device is NAND */
146 bool sync_read; /* enables synchronous reads */
147 bool sync_write; /* enables synchronous writes */
148 bool wait_on_read; /* monitor wait on reads */
149 bool wait_on_write; /* monitor wait on writes */
150 u32 burst_len; /* page/burst length */
151 u32 device_width; /* device bus width (8 or 16 bit) */
152 u32 mux_add_data; /* multiplex address & data */
153 u32 wait_pin; /* wait-pin to be used */
154};
155
156extern int gpmc_calc_timings(struct gpmc_timings *gpmc_t, 17extern int gpmc_calc_timings(struct gpmc_timings *gpmc_t,
157 struct gpmc_settings *gpmc_s, 18 struct gpmc_settings *gpmc_s,
158 struct gpmc_device_timings *dev_t); 19 struct gpmc_device_timings *dev_t);
diff --git a/include/linux/platform_data/gpmc-omap.h b/include/linux/platform_data/gpmc-omap.h
index 6804a8b387d7..67ccdb0e1606 100644
--- a/include/linux/platform_data/gpmc-omap.h
+++ b/include/linux/platform_data/gpmc-omap.h
@@ -15,10 +15,152 @@
15/* Maximum Number of Chip Selects */ 15/* Maximum Number of Chip Selects */
16#define GPMC_CS_NUM 8 16#define GPMC_CS_NUM 8
17 17
18/* bool type time settings */
19struct gpmc_bool_timings {
20 bool cycle2cyclediffcsen;
21 bool cycle2cyclesamecsen;
22 bool we_extra_delay;
23 bool oe_extra_delay;
24 bool adv_extra_delay;
25 bool cs_extra_delay;
26 bool time_para_granularity;
27};
28
29/*
30 * Note that all values in this struct are in nanoseconds except sync_clk
31 * (which is in picoseconds), while the register values are in gpmc_fck cycles.
32 */
33struct gpmc_timings {
34 /* Minimum clock period for synchronous mode (in picoseconds) */
35 u32 sync_clk;
36
37 /* Chip-select signal timings corresponding to GPMC_CS_CONFIG2 */
38 u32 cs_on; /* Assertion time */
39 u32 cs_rd_off; /* Read deassertion time */
40 u32 cs_wr_off; /* Write deassertion time */
41
42 /* ADV signal timings corresponding to GPMC_CONFIG3 */
43 u32 adv_on; /* Assertion time */
44 u32 adv_rd_off; /* Read deassertion time */
45 u32 adv_wr_off; /* Write deassertion time */
46 u32 adv_aad_mux_on; /* ADV assertion time for AAD */
47 u32 adv_aad_mux_rd_off; /* ADV read deassertion time for AAD */
48 u32 adv_aad_mux_wr_off; /* ADV write deassertion time for AAD */
49
50 /* WE signals timings corresponding to GPMC_CONFIG4 */
51 u32 we_on; /* WE assertion time */
52 u32 we_off; /* WE deassertion time */
53
54 /* OE signals timings corresponding to GPMC_CONFIG4 */
55 u32 oe_on; /* OE assertion time */
56 u32 oe_off; /* OE deassertion time */
57 u32 oe_aad_mux_on; /* OE assertion time for AAD */
58 u32 oe_aad_mux_off; /* OE deassertion time for AAD */
59
60 /* Access time and cycle time timings corresponding to GPMC_CONFIG5 */
61 u32 page_burst_access; /* Multiple access word delay */
62 u32 access; /* Start-cycle to first data valid delay */
63 u32 rd_cycle; /* Total read cycle time */
64 u32 wr_cycle; /* Total write cycle time */
65
66 u32 bus_turnaround;
67 u32 cycle2cycle_delay;
68
69 u32 wait_monitoring;
70 u32 clk_activation;
71
72 /* The following are only on OMAP3430 */
73 u32 wr_access; /* WRACCESSTIME */
74 u32 wr_data_mux_bus; /* WRDATAONADMUXBUS */
75
76 struct gpmc_bool_timings bool_timings;
77};
78
79/* Device timings in picoseconds */
80struct gpmc_device_timings {
81 u32 t_ceasu; /* address setup to CS valid */
82 u32 t_avdasu; /* address setup to ADV valid */
83 /* XXX: try to combine t_avdp_r & t_avdp_w. Issue is
84 * of tusb using these timings even for sync whilst
85 * ideally for adv_rd/(wr)_off it should have considered
86 * t_avdh instead. This indirectly necessitates r/w
87 * variations of t_avdp as it is possible to have one
88 * sync & other async
89 */
90 u32 t_avdp_r; /* ADV low time (what about t_cer ?) */
91 u32 t_avdp_w;
92 u32 t_aavdh; /* address hold time */
93 u32 t_oeasu; /* address setup to OE valid */
94 u32 t_aa; /* access time from ADV assertion */
95 u32 t_iaa; /* initial access time */
96 u32 t_oe; /* access time from OE assertion */
97 u32 t_ce; /* access time from CS asertion */
98 u32 t_rd_cycle; /* read cycle time */
99 u32 t_cez_r; /* read CS deassertion to high Z */
100 u32 t_cez_w; /* write CS deassertion to high Z */
101 u32 t_oez; /* OE deassertion to high Z */
102 u32 t_weasu; /* address setup to WE valid */
103 u32 t_wpl; /* write assertion time */
104 u32 t_wph; /* write deassertion time */
105 u32 t_wr_cycle; /* write cycle time */
106
107 u32 clk;
108 u32 t_bacc; /* burst access valid clock to output delay */
109 u32 t_ces; /* CS setup time to clk */
110 u32 t_avds; /* ADV setup time to clk */
111 u32 t_avdh; /* ADV hold time from clk */
112 u32 t_ach; /* address hold time from clk */
113 u32 t_rdyo; /* clk to ready valid */
114
115 u32 t_ce_rdyz; /* XXX: description ?, or use t_cez instead */
116 u32 t_ce_avd; /* CS on to ADV on delay */
117
118 /* XXX: check the possibility of combining
119 * cyc_aavhd_oe & cyc_aavdh_we
120 */
121 u8 cyc_aavdh_oe;/* read address hold time in cycles */
122 u8 cyc_aavdh_we;/* write address hold time in cycles */
123 u8 cyc_oe; /* access time from OE assertion in cycles */
124 u8 cyc_wpl; /* write deassertion time in cycles */
125 u32 cyc_iaa; /* initial access time in cycles */
126
127 /* extra delays */
128 bool ce_xdelay;
129 bool avd_xdelay;
130 bool oe_xdelay;
131 bool we_xdelay;
132};
133
134#define GPMC_BURST_4 4 /* 4 word burst */
135#define GPMC_BURST_8 8 /* 8 word burst */
136#define GPMC_BURST_16 16 /* 16 word burst */
137#define GPMC_DEVWIDTH_8BIT 1 /* 8-bit device width */
138#define GPMC_DEVWIDTH_16BIT 2 /* 16-bit device width */
139#define GPMC_MUX_AAD 1 /* Addr-Addr-Data multiplex */
140#define GPMC_MUX_AD 2 /* Addr-Data multiplex */
141
142struct gpmc_settings {
143 bool burst_wrap; /* enables wrap bursting */
144 bool burst_read; /* enables read page/burst mode */
145 bool burst_write; /* enables write page/burst mode */
146 bool device_nand; /* device is NAND */
147 bool sync_read; /* enables synchronous reads */
148 bool sync_write; /* enables synchronous writes */
149 bool wait_on_read; /* monitor wait on reads */
150 bool wait_on_write; /* monitor wait on writes */
151 u32 burst_len; /* page/burst length */
152 u32 device_width; /* device bus width (8 or 16 bit) */
153 u32 mux_add_data; /* multiplex address & data */
154 u32 wait_pin; /* wait-pin to be used */
155};
156
18/* Data for each chip select */ 157/* Data for each chip select */
19struct gpmc_omap_cs_data { 158struct gpmc_omap_cs_data {
20 bool valid; /* data is valid */ 159 bool valid; /* data is valid */
21 bool is_nand; /* device within this CS is NAND */ 160 bool is_nand; /* device within this CS is NAND */
161 struct gpmc_settings *settings;
162 struct gpmc_device_timings *device_timings;
163 struct gpmc_timings *gpmc_timings;
22 struct platform_device *pdev; /* device within this CS region */ 164 struct platform_device *pdev; /* device within this CS region */
23 unsigned int pdata_size; 165 unsigned int pdata_size;
24}; 166};