bindings/memory-controllers/omap-gpmc.txt

1 Device tree bindings for OMAP general purpose memory controllers (GPMC)
3 The actual devices are instantiated from the child nodes of a GPMC node.
9 			ti,omap2420-gpmc (omap2420)
10 			ti,omap2430-gpmc (omap2430)
11 			ti,omap3430-gpmc (omap3430 & omap3630)
12 			ti,omap4430-gpmc (omap4430 & omap4460 & omap543x)
13 			ti,am3352-gpmc   (am335x devices)
17  - ti,hwmods:		Should be set to "ti,gpmc" until the DT transition is
21  - gpmc,num-cs:		The maximum number of chip-select lines that controller
23  - gpmc,num-waitpins:	The maximum number of wait pins that controller can
35  - interrupt-controller: The GPMC driver implements and interrupt controller for
44  - gpio-controller:	The GPMC driver implements a GPIO controller for the
45 			GPMC WAIT pins that can be used as general purpose inputs.
50  - dmas			GPMC NAND prefetch dma channel
55  - gpmc,sync-clk-ps:	Minimum clock period for synchronous mode, in picoseconds
58  - gpmc,cs-on-ns:	Assertion time
59  - gpmc,cs-rd-off-ns:	Read deassertion time
60  - gpmc,cs-wr-off-ns:	Write deassertion time
63  - gpmc,adv-on-ns:	Assertion time
64  - gpmc,adv-rd-off-ns:	Read deassertion time
65  - gpmc,adv-wr-off-ns:	Write deassertion time
66  - gpmc,adv-aad-mux-on-ns:	Assertion time for AAD
67  - gpmc,adv-aad-mux-rd-off-ns:	Read deassertion time for AAD
68  - gpmc,adv-aad-mux-wr-off-ns:	Write deassertion time for AAD
71  - gpmc,we-on-ns	Assertion time
72  - gpmc,we-off-ns:	Deassertion time
75  - gpmc,oe-on-ns:	Assertion time
76  - gpmc,oe-off-ns:	Deassertion time
77  - gpmc,oe-aad-mux-on-ns:	Assertion time for AAD
78  - gpmc,oe-aad-mux-off-ns:	Deassertion time for AAD
82  - gpmc,page-burst-access-ns: 	Multiple access word delay
83  - gpmc,access-ns:		Start-cycle to first data valid delay
84  - gpmc,rd-cycle-ns:		Total read cycle time
85  - gpmc,wr-cycle-ns:		Total write cycle time
86  - gpmc,bus-turnaround-ns:	Turn-around time between successive accesses
87  - gpmc,cycle2cycle-delay-ns:	Delay between chip-select pulses
88  - gpmc,clk-activation-ns: 	GPMC clock activation time
89  - gpmc,wait-monitoring-ns:	Start of wait monitoring with regard to valid
94  - gpmc,adv-extra-delay:	ADV signal is delayed by half GPMC clock
95  - gpmc,cs-extra-delay:		CS signal is delayed by half GPMC clock
96  - gpmc,cycle2cycle-diffcsen:	Add "cycle2cycle-delay" between successive
98  - gpmc,cycle2cycle-samecsen:	Add "cycle2cycle-delay" between successive
100  - gpmc,oe-extra-delay:		OE signal is delayed by half GPMC clock
101  - gpmc,we-extra-delay:		WE signal is delayed by half GPMC clock
102  - gpmc,time-para-granularity:	Multiply all access times by 2
105  - gpmc,wr-access-ns:		In synchronous write mode, for single or
110  - gpmc,wr-data-mux-bus-ns:	In address-data multiplex mode, specifies
114 GPMC chip-select settings properties for child nodes. All are optional.
116 - gpmc,burst-length	Page/burst length. Must be 4, 8 or 16.
117 - gpmc,burst-wrap	Enables wrap bursting
118 - gpmc,burst-read	Enables read page/burst mode
119 - gpmc,burst-write	Enables write page/burst mode
120 - gpmc,device-width	Total width of device(s) connected to a GPMC
121 			chip-select in bytes. The GPMC supports 8-bit
124 - gpmc,mux-add-data	Address and data multiplexing configuration.
128 - gpmc,sync-read	Enables synchronous read. Defaults to asynchronous
130 - gpmc,sync-write	Enables synchronous writes. Defaults to asynchronous
132 - gpmc,wait-pin		Wait-pin used by client. Must be less than
133 			"gpmc,num-waitpins".
134 - gpmc,wait-on-read	Enables wait monitoring on reads.
135 - gpmc,wait-on-write	Enables wait monitoring on writes.
139 	gpmc: gpmc@50000000 {
140 		compatible = "ti,am3352-gpmc";
141 		ti,hwmods = "gpmc";
146 		gpmc,num-cs = <8>;
147 		gpmc,num-waitpins = <2>;