60 lines
2.0 KiB
Plaintext
60 lines
2.0 KiB
Plaintext
Freescale's NAND flash controller (NFC)
|
|
|
|
This variant of the Freescale NAND flash controller (NFC) can be found on
|
|
Vybrid (vf610), MPC5125, MCF54418 and Kinetis K70.
|
|
|
|
Required properties:
|
|
- compatible: Should be set to "fsl,vf610-nfc".
|
|
- reg: address range of the NFC.
|
|
- interrupts: interrupt of the NFC.
|
|
- #address-cells: shall be set to 1. Encode the nand CS.
|
|
- #size-cells : shall be set to 0.
|
|
- assigned-clocks: main clock from the SoC, for Vybrid <&clks VF610_CLK_NFC>;
|
|
- assigned-clock-rates: The NAND bus timing is derived from this clock
|
|
rate and should not exceed maximum timing for any NAND memory chip
|
|
in a board stuffing. Typical NAND memory timings derived from this
|
|
clock are found in the SoC hardware reference manual. Furthermore,
|
|
there might be restrictions on maximum rates when using hardware ECC.
|
|
|
|
- #address-cells, #size-cells : Must be present if the device has sub-nodes
|
|
representing partitions.
|
|
|
|
Required children nodes:
|
|
Children nodes represent the available nand chips. Currently the driver can
|
|
only handle one NAND chip.
|
|
|
|
Required properties:
|
|
- compatible: Should be set to "fsl,vf610-nfc-cs".
|
|
- nand-bus-width: see nand-controller.yaml
|
|
- nand-ecc-mode: see nand-controller.yaml
|
|
|
|
Required properties for hardware ECC:
|
|
- nand-ecc-strength: supported strengths are 24 and 32 bit (see nand-controller.yaml)
|
|
- nand-ecc-step-size: step size equals page size, currently only 2k pages are
|
|
supported
|
|
- nand-on-flash-bbt: see nand-controller.yaml
|
|
|
|
Example:
|
|
|
|
nfc: nand@400e0000 {
|
|
compatible = "fsl,vf610-nfc";
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
reg = <0x400e0000 0x4000>;
|
|
interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
|
|
clocks = <&clks VF610_CLK_NFC>;
|
|
clock-names = "nfc";
|
|
assigned-clocks = <&clks VF610_CLK_NFC>;
|
|
assigned-clock-rates = <33000000>;
|
|
|
|
nand@0 {
|
|
compatible = "fsl,vf610-nfc-nandcs";
|
|
reg = <0>;
|
|
nand-bus-width = <8>;
|
|
nand-ecc-mode = "hw";
|
|
nand-ecc-strength = <32>;
|
|
nand-ecc-step-size = <2048>;
|
|
nand-on-flash-bbt;
|
|
};
|
|
};
|