| * Qualcomm NAND controller |
| |
| Required properties: |
| - compatible: should be "qcom,ipq806x-nand" |
| - reg: MMIO address range |
| - clocks: must contain core clock and always on clock |
| - clock-names: must contain "core" for the core clock and "aon" for the |
| always on clock |
| - dmas: DMA specifier, consisting of a phandle to the ADM DMA |
| controller node and the channel number to be used for |
| NAND. Refer to dma.txt and qcom_adm.txt for more details |
| - dma-names: must be "rxtx" |
| - qcom,cmd-crci: must contain the ADM command type CRCI block instance |
| number specified for the NAND controller on the given |
| platform |
| - qcom,data-crci: must contain the ADM data type CRCI block instance |
| number specified for the NAND controller on the given |
| platform |
| - #address-cells: <1> - subnodes give the chip-select number |
| - #size-cells: <0> |
| |
| * NAND chip-select |
| |
| Each controller may contain one or more subnodes to represent enabled |
| chip-selects which (may) contain NAND flash chips. Their properties are as |
| follows. |
| |
| Required properties: |
| - compatible: should contain "qcom,nandcs" |
| - reg: a single integer representing the chip-select |
| number (e.g., 0, 1, 2, etc.) |
| - #address-cells: see partition.txt |
| - #size-cells: see partition.txt |
| - nand-ecc-strength: see nand.txt |
| - nand-ecc-step-size: must be 512. see nand.txt for more details. |
| |
| Optional properties: |
| - nand-bus-width: see nand.txt |
| |
| Each nandcs device node may optionally contain a 'partitions' sub-node, which |
| further contains sub-nodes describing the flash partition mapping. See |
| partition.txt for more detail. |
| |
| Example: |
| |
| nand@1ac00000 { |
| compatible = "qcom,ebi2-nandc"; |
| reg = <0x1ac00000 0x800>; |
| |
| clocks = <&gcc EBI2_CLK>, |
| <&gcc EBI2_AON_CLK>; |
| clock-names = "core", "aon"; |
| |
| dmas = <&adm_dma 3>; |
| dma-names = "rxtx"; |
| qcom,cmd-crci = <15>; |
| qcom,data-crci = <3>; |
| |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| nandcs@0 { |
| compatible = "qcom,nandcs"; |
| reg = <0>; |
| |
| nand-ecc-strength = <4>; |
| nand-ecc-step-size = <512>; |
| nand-bus-width = <8>; |
| |
| partitions { |
| compatible = "fixed-partitions"; |
| #address-cells = <1>; |
| #size-cells = <1>; |
| |
| partition@0 { |
| label = "boot-nand"; |
| reg = <0 0x58a0000>; |
| }; |
| |
| partition@58a0000 { |
| label = "fs-nand"; |
| reg = <0x58a0000 0x4000000>; |
| }; |
| }; |
| }; |
| }; |
