162306a36Sopenharmony_ciFreescale's NAND flash controller (NFC) 262306a36Sopenharmony_ci 362306a36Sopenharmony_ciThis variant of the Freescale NAND flash controller (NFC) can be found on 462306a36Sopenharmony_ciVybrid (vf610), MPC5125, MCF54418 and Kinetis K70. 562306a36Sopenharmony_ci 662306a36Sopenharmony_ciRequired properties: 762306a36Sopenharmony_ci- compatible: Should be set to "fsl,vf610-nfc". 862306a36Sopenharmony_ci- reg: address range of the NFC. 962306a36Sopenharmony_ci- interrupts: interrupt of the NFC. 1062306a36Sopenharmony_ci- #address-cells: shall be set to 1. Encode the nand CS. 1162306a36Sopenharmony_ci- #size-cells : shall be set to 0. 1262306a36Sopenharmony_ci- assigned-clocks: main clock from the SoC, for Vybrid <&clks VF610_CLK_NFC>; 1362306a36Sopenharmony_ci- assigned-clock-rates: The NAND bus timing is derived from this clock 1462306a36Sopenharmony_ci rate and should not exceed maximum timing for any NAND memory chip 1562306a36Sopenharmony_ci in a board stuffing. Typical NAND memory timings derived from this 1662306a36Sopenharmony_ci clock are found in the SoC hardware reference manual. Furthermore, 1762306a36Sopenharmony_ci there might be restrictions on maximum rates when using hardware ECC. 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ci- #address-cells, #size-cells : Must be present if the device has sub-nodes 2062306a36Sopenharmony_ci representing partitions. 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ciRequired children nodes: 2362306a36Sopenharmony_ciChildren nodes represent the available nand chips. Currently the driver can 2462306a36Sopenharmony_cionly handle one NAND chip. 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ciRequired properties: 2762306a36Sopenharmony_ci- compatible: Should be set to "fsl,vf610-nfc-cs". 2862306a36Sopenharmony_ci- nand-bus-width: see nand-controller.yaml 2962306a36Sopenharmony_ci- nand-ecc-mode: see nand-controller.yaml 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ciRequired properties for hardware ECC: 3262306a36Sopenharmony_ci- nand-ecc-strength: supported strengths are 24 and 32 bit (see nand-controller.yaml) 3362306a36Sopenharmony_ci- nand-ecc-step-size: step size equals page size, currently only 2k pages are 3462306a36Sopenharmony_ci supported 3562306a36Sopenharmony_ci- nand-on-flash-bbt: see nand-controller.yaml 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ciExample: 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ci nfc: nand@400e0000 { 4062306a36Sopenharmony_ci compatible = "fsl,vf610-nfc"; 4162306a36Sopenharmony_ci #address-cells = <1>; 4262306a36Sopenharmony_ci #size-cells = <0>; 4362306a36Sopenharmony_ci reg = <0x400e0000 0x4000>; 4462306a36Sopenharmony_ci interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>; 4562306a36Sopenharmony_ci clocks = <&clks VF610_CLK_NFC>; 4662306a36Sopenharmony_ci clock-names = "nfc"; 4762306a36Sopenharmony_ci assigned-clocks = <&clks VF610_CLK_NFC>; 4862306a36Sopenharmony_ci assigned-clock-rates = <33000000>; 4962306a36Sopenharmony_ci 5062306a36Sopenharmony_ci nand@0 { 5162306a36Sopenharmony_ci compatible = "fsl,vf610-nfc-nandcs"; 5262306a36Sopenharmony_ci reg = <0>; 5362306a36Sopenharmony_ci nand-bus-width = <8>; 5462306a36Sopenharmony_ci nand-ecc-mode = "hw"; 5562306a36Sopenharmony_ci nand-ecc-strength = <32>; 5662306a36Sopenharmony_ci nand-ecc-step-size = <2048>; 5762306a36Sopenharmony_ci nand-on-flash-bbt; 5862306a36Sopenharmony_ci }; 5962306a36Sopenharmony_ci }; 60