Hi Lukasz, Subject line could be improved: ARM: dts: vf610-bk4: Fix qspi node description On Tue, Jul 30, 2019 at 12:06 PM Lukasz Majewski <lukma@xxxxxxx> wrote: > > Before this change the device tree description of qspi node for > second memory on BK4 board was wrong (applicable to old, in-house > tunned fsl-quadspi.c driver). > > As a result this memory was not recognized correctly when used > with the new spi-fsl-qspi.c driver. > > From the dt-bindings: > > "Required SPI slave node properties: > - reg: There are two buses (A and B) with two chip selects each. > This encodes to which bus and CS the flash is connected: > <0>: Bus A, CS 0 > <1>: Bus A, CS 1 > <2>: Bus B, CS 0 > <3>: Bus B, CS 1" > > According to above with new driver the second SPI-NOR memory shall > have reg=<2> as it is connected to Bus B, CS 0. I am glad you got it working! This looks very familiar with the suggestion I sent yesterday: http://lists.infradead.org/pipermail/linux-mtd/2019-July/090655.html It is a good practice to give some credit to someone who has helped in finding the solution of your problem. Adding a Suggested-by: Fabio Estevam <festevam@xxxxxxxxx> would be nice here. This also needs a Fixes tag.