diff options
Diffstat (limited to 'Documentation/devicetree/bindings/memory-controllers/ti/emif.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/memory-controllers/ti/emif.txt | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt b/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt index 938f8e1ba205..63f674ffeb4f 100644 --- a/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt +++ b/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt @@ -3,11 +3,18 @@ EMIF - External Memory Interface - is an SDRAM controller used in TI SoCs. EMIF supports, based on the IP revision, one or more of DDR2/DDR3/LPDDR2 protocols. This binding describes a given instance -of the EMIF IP and memory parts attached to it. +of the EMIF IP and memory parts attached to it. Certain revisions +of the EMIF controller also contain optional ECC support, which +corrects one bit errors and detects two bit errors. Required properties: - compatible : Should be of the form "ti,emif-<ip-rev>" where <ip-rev> - is the IP revision of the specific EMIF instance. + is the IP revision of the specific EMIF instance. For newer controllers, + compatible should be one of the following: + "ti,emif-am3352" + "ti,emif-am4372" + "ti,emif-dra7xx" + "ti,emif-keystone" - phy-type : <u32> indicating the DDR phy type. Following are the allowed values @@ -19,6 +26,14 @@ Required properties: - ti,hwmods : For TI hwmods processing and omap device creation the value shall be "emif<n>" where <n> is the number of the EMIF instance with base 1. +- interrupts : interrupt used by the controller + +Required only for "ti,emif-am3352" and "ti,emif-am4372": +- sram : Phandles for generic sram driver nodes, + first should be type 'protect-exec' for the driver to use to copy + and run PM functions, second should be regular pool to be used for + data region for code. See Documentation/devicetree/bindings/sram/sram.yaml + for more details. Optional properties: - cs1-used : Have this property if CS1 of this EMIF @@ -41,9 +56,9 @@ Optional properties: - hw-caps-temp-alert : Have this property if the controller has capability for generating SDRAM temperature alerts -Example: +-Examples: -emif1: emif@0x4c000000 { +emif1: emif@4c000000 { compatible = "ti,emif-4d"; ti,hwmods = "emif2"; phy-type = <1>; @@ -53,3 +68,17 @@ emif1: emif@0x4c000000 { hw-caps-ll-interface; hw-caps-temp-alert; }; + +/* From am33xx.dtsi */ +emif: emif@4c000000 { + compatible = "ti,emif-am3352"; + reg = <0x4C000000 0x1000>; + sram = <&pm_sram_code + &pm_sram_data>; +}; + +emif1: emif@4c000000 { + compatible = "ti,emif-dra7xx"; + reg = <0x4c000000 0x200>; + interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>; +}; |