[PATCH v2 2/6] mtd: spi-nor: add erase die (chip) capability

[Fabio Estevam]

On 02/11/2023 15:21, Tudor Ambarus wrote:

> Let's see what gets to the SPI controller. Which SPI controller do you 
> use?

I am using i.MX8MP, which has drivers/spi/spi-nxp-fspi.c.

Here is the result:

root at mcde3000a:~# flash_erase /dev/mtd0 0 0
Erasing 131072 Kibyte @ 0 --  0 [   26.040903] spi-nor spi0.0: ***** 
nor->reg_proto = 0x00010101
% complete [   26.049570] spi-nor spi0.0: *****
[   26.053849] spi-nor spi0.0: ***** op.cmd.nbytes = 0x01
[   26.059118] spi-nor spi0.0: ***** op.cmd.buswidth = 0x01
[   26.064539] spi-nor spi0.0: ***** op.cmd.opcode = 0xc4
[   26.069787] spi-nor spi0.0: *****
[   26.073118] spi-nor spi0.0: ***** op.addr.nbytes = 0x04
[   26.078451] spi-nor spi0.0: ***** op.addr.buswidth = 0x01
[   26.083949] spi-nor spi0.0: ***** op.addr.buswidth = 0x0
[   26.089368] spi-nor spi0.0: *****
[   26.092699] spi-nor spi0.0: ***** op.dummy.nbytes = 0x00
[   26.098123] spi-nor spi0.0: ***** op.dummy.buswidth = 0x00
[   26.103713] spi-nor spi0.0: *****
[   26.107045] spi-nor spi0.0: ***** op.data.buswidth = 0x00
[   26.112549] spi-nor spi0.0: ***** op.data.nbytes = 0
[   26.117727] spi-nor spi0.0: ***** nor->reg_proto = 0x00010101
[   26.123589] spi-nor spi0.0: *****
[   26.127012] spi-nor spi0.0: ***** op.cmd.nbytes = 0x01
[   26.132274] spi-nor spi0.0: ***** op.cmd.buswidth = 0x01
[   26.137706] spi-nor spi0.0: ***** op.cmd.opcode = 0xc4
[   26.142956] spi-nor spi0.0: *****
[   26.146290] spi-nor spi0.0: ***** op.addr.nbytes = 0x04
[   26.151625] spi-nor spi0.0: ***** op.addr.buswidth = 0x01
[   26.157132] spi-nor spi0.0: ***** op.addr.buswidth = 0x4000000
[   26.163065] spi-nor spi0.0: *****
[   26.166402] spi-nor spi0.0: ***** op.dummy.nbytes = 0x00
[   26.171815] spi-nor spi0.0: ***** op.dummy.buswidth = 0x00
[   26.177405] spi-nor spi0.0: *****
[   26.180737] spi-nor spi0.0: ***** op.data.buswidth = 0x00
[   26.186241] spi-nor spi0.0: ***** op.data.nbytes = 0
Erasing 131072 Kibyte @ 0 -- 100 % complete

root at mcde3000a:~# hexdump /dev/mtd0
0000000 a1d4 168c 4dad dfb2 2a3d c2af 0aae c18a
0000010 2d5f 177a c39f 46a4 f9cd b880 331e 2543
....

Thanks