LayerscapeのトピックLS1043 support for mtd qspi

LS1043 support for mtd qspi

prodrigu — Tue, 21 May 2019 21:24:35 GMT

Is there any support for MTD QSPI in Linux?

4.1.13 version of kernel doesn't allow to use MTD partitions.

I read the kernel driver and found this list on latest kernel version:

./drivers/mtd/spi-nor/fsl-quadspi.c Linux < 5.1

./drivers/spi/spi-fsl-qspi.c Linux > 5.1

static const struct of_device_id fsl_qspi_dt_ids[] = {
{ .compatible = "fsl,vf610-qspi", .data = (void *)&vybrid_data, },
{ .compatible = "fsl,imx6sx-qspi", .data = (void *)&imx6sx_data, },
{ .compatible = "fsl,imx7d-qspi", .data = (void *)&imx7d_data, },
{ .compatible = "fsl,imx6ul-qspi", .data = (void *)&imx6ul_data, },
{ .compatible = "fsl,ls1021a-qspi", .data = (void *)&ls1021a_data, },
{ .compatible = "fsl,ls2080a-qspi", .data = (void *)&ls2080a_data, },
{ /* sentinel */ }
};

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Does this mean that fsl-ls1043 is not supported?

Thanks,

Pablo

Re: LS1043 support for mtd qspi

prodrigu — Tue, 21 May 2019 21:25:44 GMT

Also, I found that adding a map like file linux/ts5500_flash.c at master · torvalds/linux · GitHub

makes the MTD work as expected

Re: LS1043 support for mtd qspi

Pavel — Fri, 31 May 2019 06:14:04 GMT

See the Chapter 30 of the LS1043a Reference Manual:

https://www.nxp.com/webapp/Download?colCode=LS1043ARM

This document shows that LS1043a supports QSPI.

Use the following command for kernel menu under LSDK-1903:

flex-builder -c linux:custom -a arm64 -m ls1043ardb

flex-builder -c linux:custom -a arm64 -m ls1043aqds

Use the following sequence for enabling QSPI in this kernel menu:

Device Drivers --->

<*> Memory Technology Device (MTD) support --->

<*> SPI-NOR device support --->

<*> Freescale Quad SPI controller

The LS1043A QuardSPI controller is the same as LS1021a QuardSPI controller.

Have a great day,
Pavel Chubakov

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