cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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atmel,ebi.txt (4022B)

      1* Device tree bindings for Atmel EBI
      2
      3The External Bus Interface (EBI) controller is a bus where you can connect
      4asynchronous (NAND, NOR, SRAM, ....) and synchronous memories (SDR/DDR SDRAMs).
      5The EBI provides a glue-less interface to asynchronous memories through the SMC
      6(Static Memory Controller).
      7
      8Required properties:
      9
     10- compatible:		"atmel,at91sam9260-ebi"
     11			"atmel,at91sam9261-ebi"
     12			"atmel,at91sam9263-ebi0"
     13			"atmel,at91sam9263-ebi1"
     14			"atmel,at91sam9rl-ebi"
     15			"atmel,at91sam9g45-ebi"
     16			"atmel,at91sam9x5-ebi"
     17			"atmel,sama5d3-ebi"
     18			"microchip,sam9x60-ebi"
     19
     20- reg:			Contains offset/length value for EBI memory mapping.
     21			This property might contain several entries if the EBI
     22			memory range is not contiguous
     23
     24- #address-cells:	Must be 2.
     25			The first cell encodes the CS.
     26			The second cell encode the offset into the CS memory
     27			range.
     28
     29- #size-cells:		Must be set to 1.
     30
     31- ranges:		Encodes CS to memory region association.
     32
     33- clocks:		Clock feeding the EBI controller.
     34			See clock-bindings.txt
     35
     36Children device nodes are representing device connected to the EBI bus.
     37
     38Required device node properties:
     39
     40- reg:			Contains the chip-select id, the offset and the length
     41			of the memory region requested by the device.
     42
     43EBI bus configuration will be defined directly in the device subnode.
     44
     45Optional EBI/SMC properties:
     46
     47- atmel,smc-bus-width:		width of the asynchronous device's data bus
     48				8, 16 or 32.
     49				Default to 8 when undefined.
     50
     51- atmel,smc-byte-access-type	"write" or "select" (see Atmel datasheet).
     52				Default to "select" when undefined.
     53
     54- atmel,smc-read-mode		"nrd" or "ncs".
     55				Default to "ncs" when undefined.
     56
     57- atmel,smc-write-mode		"nwe" or "ncs".
     58				Default to "ncs" when undefined.
     59
     60- atmel,smc-exnw-mode		"disabled", "frozen" or "ready".
     61				Default to "disabled" when undefined.
     62
     63- atmel,smc-page-mode		enable page mode if present. The provided value
     64				defines the page size (supported values: 4, 8,
     65				16 and 32).
     66
     67- atmel,smc-tdf-mode:		"normal" or "optimized". When set to
     68				"optimized" the data float time is optimized
     69				depending on the next device being accessed
     70				(next device setup time is subtracted to the
     71				current device data float time).
     72				Default to "normal" when undefined.
     73
     74If at least one atmel,smc- property is defined the following SMC timing
     75properties become mandatory. In the other hand, if none of the atmel,smc-
     76properties are specified, we assume that the EBI bus configuration will be
     77handled by the sub-device driver, and none of those properties should be
     78defined.
     79
     80All the timings are expressed in nanoseconds (see Atmel datasheet for a full
     81description).
     82
     83- atmel,smc-ncs-rd-setup-ns
     84- atmel,smc-nrd-setup-ns
     85- atmel,smc-ncs-wr-setup-ns
     86- atmel,smc-nwe-setup-ns
     87- atmel,smc-ncs-rd-pulse-ns
     88- atmel,smc-nrd-pulse-ns
     89- atmel,smc-ncs-wr-pulse-ns
     90- atmel,smc-nwe-pulse-ns
     91- atmel,smc-nwe-cycle-ns
     92- atmel,smc-nrd-cycle-ns
     93- atmel,smc-tdf-ns
     94
     95Example:
     96
     97	ebi: ebi@10000000 {
     98		compatible = "atmel,sama5d3-ebi";
     99		#address-cells = <2>;
    100		#size-cells = <1>;
    101		atmel,smc = <&hsmc>;
    102		atmel,matrix = <&matrix>;
    103		reg = <0x10000000 0x10000000
    104		       0x40000000 0x30000000>;
    105		ranges = <0x0 0x0 0x10000000 0x10000000
    106			  0x1 0x0 0x40000000 0x10000000
    107			  0x2 0x0 0x50000000 0x10000000
    108			  0x3 0x0 0x60000000 0x10000000>;
    109		clocks = <&mck>;
    110
    111		pinctrl-names = "default";
    112		pinctrl-0 = <&pinctrl_ebi_addr>;
    113
    114		nor: flash@0,0 {
    115			compatible = "cfi-flash";
    116			#address-cells = <1>;
    117			#size-cells = <1>;
    118			reg = <0x0 0x0 0x1000000>;
    119			bank-width = <2>;
    120
    121			atmel,smc-read-mode = "nrd";
    122			atmel,smc-write-mode = "nwe";
    123			atmel,smc-bus-width = <16>;
    124			atmel,smc-ncs-rd-setup-ns = <0>;
    125			atmel,smc-ncs-wr-setup-ns = <0>;
    126			atmel,smc-nwe-setup-ns = <8>;
    127			atmel,smc-nrd-setup-ns = <16>;
    128			atmel,smc-ncs-rd-pulse-ns = <84>;
    129			atmel,smc-ncs-wr-pulse-ns = <84>;
    130			atmel,smc-nrd-pulse-ns = <76>;
    131			atmel,smc-nwe-pulse-ns = <76>;
    132			atmel,smc-nrd-cycle-ns = <107>;
    133			atmel,smc-nwe-cycle-ns = <84>;
    134			atmel,smc-tdf-ns = <16>;
    135		};
    136	};
    137