LS1020a: IFC not probed at boot

jb2 — Wed, 13 Jul 2022 15:17:24 GMT

Hello,

I have a issue with my custom board.

Details:

- Boot UBoot on QSPI: OK

- Copy ubifs to NAND flash in UBoot: OK

- Copy ftd and uImage from NAND to DDR and bootm: OK

- In the boot of the kernel, the IFC driver is not probed. I don't have the log:

fsl-ifc 1530000.ifc: Freescale Integrated Flash Controller

I try with the devboard and log before and after are the same.

I enabled CONFIG_DEBUG_KERNEL and I only have this:

[ 3.770934] bus: 'platform': add driver fsl-ifc

Do you know why the driver is not probed?

Decompiled device tree (in soc):

ifc@1530000 { compatible = "fsl,ifc", "simple-bus"; reg = <0x0 0x1530000 0x0 0x10000>; big-endian; interrupts = <0x0 0x4b 0x4>; #address-cells = <0x2>; #size-cells = <0x1>; ranges = <0x0 0x0 0x0 0x7e800000 0x10000>; status = "okay"; nand@0,0 { compatible = "fsl,ifc-nand"; #address-cells = <0x1>; #size-cells = <0x1>; reg = <0x0 0x0 0x10000>; partition@0 { label = "recovery"; reg = <0x0 0x2000000>; }; partition@1 { label = "fw0"; reg = <0x2000000 0x10000000>; }; partition@2 { label = "fw1"; reg = <0x12000000 0x10000000>; }; partition@3 { label = "cfg"; reg = <0x22000000 0x100000>; }; partition@4 { label = "cfgbkp"; reg = <0x22100000 0x100000>; }; partition@5 { label = "vscfw"; reg = <0x22200000 0x20000>; }; partition@6 { label = "log"; reg = <0x22220000 0x1dde0000>; }; }; };

Defconfig

CONFIG_FSL_IFC=y
CONFIG_MTD_NAND_FSL_IFC=y

Re: LS1020a: IFC not probed at boot

jb2 — Fri, 15 Jul 2022 06:05:08 GMT

I found the solution but I have one question.

In the U-Boot file arch/arm/cpu/armv7/ls102xa/fdt.c, the node is disabled at the end of the file.

Can I remove this part of code without side effect? I have no conflict between QSPI and NAND on my board.

Thank you,

Jean

Re: LS1020a: IFC not probed at boot

yipingwang — Mon, 18 Jul 2022 07:47:32 GMT

Please refer to the following RCW definition, IFC is multiplexed with QSPI on LS1020A.

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LS1020a: IFC not probed at boot

Re: LS1020a: IFC not probed at boot

Re: LS1020a: IFC not probed at boot