[PATCH RFC v3 1/2] Devicetree: Add pl353 smc controller devicetree binding information
Add pl353 static memory controller devicetree binding information. Signed-off-by: Punnaiah Choudary Kalluri --- Changes in v2: - modified timing binding info as per onfi timing parameters - add suffix nano second as timing unit - modified the clock names as per the IP spec --- .../bindings/memory-controllers/pl353-smc.txt | 53 1 files changed, 53 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt diff --git a/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt b/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt new file mode 100644 index 000..c1f011d --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt @@ -0,0 +1,53 @@ +Device tree bindings for ARM PL353 static memory controller + +PL353 static memory controller supports two kinds of memory +interfaces.i.e NAND and SRAM/NOR interfaces. +The actual devices are instantiated from the child nodes of pl353 smc node. + +Required properties: +- compatible : Should be "arm,pl353-smc-r2p1" +- reg : Controller registers map and length. +- clock-names : List of input clock names - "memclk", "aclk" + (See clock bindings for details). +- clocks : Clock phandles (see clock bindings for details). +- address-cells: Address cells, must be 1. +- size-cells : Size cells. Must be 1. + +Child nodes: + For NAND the "arm,pl353-nand-r2p1" and for NOR the "cfi-flash" drivers are +supported as child nodes. + +Mandatory timing properties for child nodes: +- nand-tRC-ns : Read cycle time. +- nand-tWC-ns : Write cycle time. +- nand-tREA-ns : re_n assertion delay. +- nand-tWP-ns : we_n de-assertion delay. +- nand-tCLR-ns : Status read time +- nand-tAR-ns : ID read time +- nand-tRR-ns : busy to re_n + +for nand partition information please refer the below file +Documentation/devicetree/bindings/mtd/partition.txt + +Example: + pl353smcc_0: pl353smcc@e000e000 { + compatible = "arm,pl353-smcc-r2p1" + clock-names = "memclk", "aclk"; + clocks = < 11>, < 44>; + reg = <0xe000e000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + nand_0: nand@e100 { + compatible = "arm,pl353-nand-r2p1" + reg = <0xe100 0x100>; + nand-tRC-ns = <40>; + nand-tWC-ns = <40>; + nand-tREA-ns = <10>; + nand-tWP-ns = <20>; + nand-tCLR-ns = <20>; + nand-tAR-ns = <20>; + nand-tRR-ns = <40>; + (...) + }; + }; -- 1.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH RFC v3 1/2] Devicetree: Add pl353 smc controller devicetree binding information
Add pl353 static memory controller devicetree binding information. Signed-off-by: Punnaiah Choudary Kalluri punn...@xilinx.com --- Changes in v2: - modified timing binding info as per onfi timing parameters - add suffix nano second as timing unit - modified the clock names as per the IP spec --- .../bindings/memory-controllers/pl353-smc.txt | 53 1 files changed, 53 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt diff --git a/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt b/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt new file mode 100644 index 000..c1f011d --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt @@ -0,0 +1,53 @@ +Device tree bindings for ARM PL353 static memory controller + +PL353 static memory controller supports two kinds of memory +interfaces.i.e NAND and SRAM/NOR interfaces. +The actual devices are instantiated from the child nodes of pl353 smc node. + +Required properties: +- compatible : Should be arm,pl353-smc-r2p1 +- reg : Controller registers map and length. +- clock-names : List of input clock names - memclk, aclk + (See clock bindings for details). +- clocks : Clock phandles (see clock bindings for details). +- address-cells: Address cells, must be 1. +- size-cells : Size cells. Must be 1. + +Child nodes: + For NAND the arm,pl353-nand-r2p1 and for NOR the cfi-flash drivers are +supported as child nodes. + +Mandatory timing properties for child nodes: +- nand-tRC-ns : Read cycle time. +- nand-tWC-ns : Write cycle time. +- nand-tREA-ns : re_n assertion delay. +- nand-tWP-ns : we_n de-assertion delay. +- nand-tCLR-ns : Status read time +- nand-tAR-ns : ID read time +- nand-tRR-ns : busy to re_n + +for nand partition information please refer the below file +Documentation/devicetree/bindings/mtd/partition.txt + +Example: + pl353smcc_0: pl353smcc@e000e000 { + compatible = arm,pl353-smcc-r2p1 + clock-names = memclk, aclk; + clocks = clkc 11, clkc 44; + reg = 0xe000e000 0x1000; + #address-cells = 1; + #size-cells = 1; + ranges; + nand_0: nand@e100 { + compatible = arm,pl353-nand-r2p1 + reg = 0xe100 0x100; + nand-tRC-ns = 40; + nand-tWC-ns = 40; + nand-tREA-ns = 10; + nand-tWP-ns = 20; + nand-tCLR-ns = 20; + nand-tAR-ns = 20; + nand-tRR-ns = 40; + (...) + }; + }; -- 1.7.4 -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/