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Message-ID: <20250823001626.3641935-1-mikhail.kshevetskiy@iopsys.eu>
Date: Sat, 23 Aug 2025 03:16:12 +0300
From: Mikhail Kshevetskiy <mikhail.kshevetskiy@...sys.eu>
To: Lorenzo Bianconi <lorenzo@...nel.org>,
Ray Liu <ray.liu@...oha.com>,
Mark Brown <broonie@...nel.org>,
Jyothi Kumar Seerapu <quic_jseerapu@...cinc.com>,
linux-arm-kernel@...ts.infradead.org,
linux-spi@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Mikhail Kshevetskiy <mikhail.kshevetskiy@...sys.eu>
Subject: [PATCH v4 00/13] spi: airoha: driver fixes & improvements
This patch series greatly improve airoha snfi driver and fix a
number of serious bug.
Fixed bugs:
* Fix reading/writing of flashes with more than one plane per lun
* Fill the buffer with 0xff before writing
* Fix reading of flashes supporting continuous reading mode
* Fix error paths
Improvements:
* Add support of dual/quad wires spi modes in exec_op(). This also
fix flash reading/writing if dirmap can't be created.
* Support of dualio/quadio flash reading commands
* Remove dirty hack that reads flash page settings from SNFI registers
during driver startup
Test results:
1) Boot without dual/quad wires spi modes support (patch-3) and disabled dirmap support
[ 2.980719] spi-nand spi0.0: Micron SPI NAND was found.
[ 2.986040] spi-nand spi0.0: 256 MiB, block size: 128 KiB, page size: 2048, OOB size: 128
[ 2.994709] 2 fixed-partitions partitions found on MTD device spi0.0
[ 3.001075] Creating 2 MTD partitions on "spi0.0":
[ 3.005862] 0x000000000000-0x000000020000 : "bl2"
[ 3.011272] 0x000000020000-0x000010000000 : "ubi"
...
[ 6.195594] ubi0: attaching mtd1
[ 13.338398] ubi0: scanning is finished
[ 13.342188] ubi0 error: ubi_read_volume_table: the layout volume was not found
[ 13.349784] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd1, error -22
[ 13.356897] UBI error: cannot attach mtd1
2) Boot without fixes for flashes with more than one plane per lun (patch-7)
[ 2.980989] spi-nand spi0.0: Micron SPI NAND was found.
[ 2.986309] spi-nand spi0.0: 256 MiB, block size: 128 KiB, page size: 2048, OOB size: 128
[ 2.994978] 2 fixed-partitions partitions found on MTD device spi0.0
[ 3.001350] Creating 2 MTD partitions on "spi0.0":
[ 3.006159] 0x000000000000-0x000000020000 : "bl2"
[ 3.011663] 0x000000020000-0x000010000000 : "ubi"
...
[ 6.391748] ubi0: attaching mtd1
[ 6.412545] ubi0 error: ubi_attach: PEB 0 contains corrupted VID header, and the data does not contain all 0xFF
[ 6.422677] ubi0 error: ubi_attach: this may be a non-UBI PEB or a severe VID header corruption which requires manual inspection
[ 6.434249] Volume identifier header dump:
[ 6.438349] magic 55424923
[ 6.441482] version 1
[ 6.444007] vol_type 0
[ 6.446539] copy_flag 0
[ 6.449068] compat 0
[ 6.451594] vol_id 0
[ 6.454120] lnum 1
[ 6.456651] data_size 4096
[ 6.459442] used_ebs 1061644134
[ 6.462748] data_pad 0
[ 6.465274] sqnum 0
[ 6.467805] hdr_crc 61169820
[ 6.470943] Volume identifier header hexdump:
[ 6.475308] hexdump of PEB 0 offset 4096, length 126976
[ 6.507391] ubi0 warning: ubi_attach: valid VID header but corrupted EC header at PEB 4
[ 6.515415] ubi0 error: ubi_compare_lebs: unsupported on-flash UBI format
[ 6.522222] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd1, error -22
[ 6.529294] UBI error: cannot attach mtd1
[ 6.533450] clk: Disabling unused clocks
[ 6.537583] Waiting for root device /dev/ubiblock0_5...
3) patched kernel tests
root@...nWrt:/lib/modules/6.6.79# insmod mtd_oobtest.ko dev=1
[ 263.191711]
[ 263.193218] =================================================
[ 263.199014] mtd_oobtest: MTD device: 1
[ 263.202768] mtd_oobtest: MTD device size 268304384, eraseblock size 131072, page size 2048, count of eraseblocks 2047, pages per eraseblock 64, OOB size 128
[ 263.216791] mtd_test: scanning for bad eraseblocks
[ 263.221956] mtd_test: scanned 2047 eraseblocks, 0 are bad
[ 263.227361] mtd_oobtest: test 1 of 5
[ 265.077216] mtd_oobtest: writing OOBs of whole device
[ 265.121767] mtd_oobtest: written up to eraseblock 0
[ 275.174147] mtd_oobtest: written up to eraseblock 256
[ 285.210279] mtd_oobtest: written up to eraseblock 512
[ 295.241724] mtd_oobtest: written up to eraseblock 768
[ 305.280167] mtd_oobtest: written up to eraseblock 1024
[ 315.326883] mtd_oobtest: written up to eraseblock 1280
[ 325.364049] mtd_oobtest: written up to eraseblock 1536
[ 335.398609] mtd_oobtest: written up to eraseblock 1792
[ 345.358981] mtd_oobtest: written 2047 eraseblocks
[ 345.363694] mtd_oobtest: verifying all eraseblocks
[ 345.386088] mtd_oobtest: verified up to eraseblock 0
[ 349.830833] mtd_oobtest: verified up to eraseblock 256
[ 354.276245] mtd_oobtest: verified up to eraseblock 512
[ 358.721496] mtd_oobtest: verified up to eraseblock 768
[ 363.166881] mtd_oobtest: verified up to eraseblock 1024
[ 367.612694] mtd_oobtest: verified up to eraseblock 1280
[ 372.058211] mtd_oobtest: verified up to eraseblock 1536
[ 376.503820] mtd_oobtest: verified up to eraseblock 1792
[ 380.914843] mtd_oobtest: verified 2047 eraseblocks
[ 380.919660] mtd_oobtest: test 2 of 5
[ 384.202620] mtd_oobtest: writing OOBs of whole device
[ 384.247584] mtd_oobtest: written up to eraseblock 0
[ 394.305121] mtd_oobtest: written up to eraseblock 256
[ 404.342199] mtd_oobtest: written up to eraseblock 512
[ 414.374204] mtd_oobtest: written up to eraseblock 768
[ 424.409891] mtd_oobtest: written up to eraseblock 1024
[ 434.453378] mtd_oobtest: written up to eraseblock 1280
[ 444.494321] mtd_oobtest: written up to eraseblock 1536
[ 454.534480] mtd_oobtest: written up to eraseblock 1792
[ 464.490962] mtd_oobtest: written 2047 eraseblocks
[ 464.495681] mtd_oobtest: verifying all eraseblocks
[ 464.518015] mtd_oobtest: verified up to eraseblock 0
[ 468.955635] mtd_oobtest: verified up to eraseblock 256
[ 473.395502] mtd_oobtest: verified up to eraseblock 512
[ 477.834373] mtd_oobtest: verified up to eraseblock 768
[ 482.272717] mtd_oobtest: verified up to eraseblock 1024
[ 486.712148] mtd_oobtest: verified up to eraseblock 1280
[ 491.150704] mtd_oobtest: verified up to eraseblock 1536
[ 495.589439] mtd_oobtest: verified up to eraseblock 1792
[ 499.993138] mtd_oobtest: verified 2047 eraseblocks
[ 499.997951] mtd_oobtest: test 3 of 5
[ 503.404228] mtd_oobtest: writing OOBs of whole device
[ 503.448822] mtd_oobtest: written up to eraseblock 0
[ 513.480773] mtd_oobtest: written up to eraseblock 256
[ 523.489361] mtd_oobtest: written up to eraseblock 512
[ 533.506896] mtd_oobtest: written up to eraseblock 768
[ 543.506268] mtd_oobtest: written up to eraseblock 1024
[ 553.506503] mtd_oobtest: written up to eraseblock 1280
[ 563.511266] mtd_oobtest: written up to eraseblock 1536
[ 573.519567] mtd_oobtest: written up to eraseblock 1792
[ 583.455111] mtd_oobtest: written 2047 eraseblocks
[ 583.459837] mtd_oobtest: verifying all eraseblocks
[ 583.499358] mtd_oobtest: verified up to eraseblock 0
[ 592.382953] mtd_oobtest: verified up to eraseblock 256
[ 601.267297] mtd_oobtest: verified up to eraseblock 512
[ 610.150907] mtd_oobtest: verified up to eraseblock 768
[ 619.034702] mtd_oobtest: verified up to eraseblock 1024
[ 627.919683] mtd_oobtest: verified up to eraseblock 1280
[ 636.821168] mtd_oobtest: verified up to eraseblock 1536
[ 645.705487] mtd_oobtest: verified up to eraseblock 1792
[ 654.520336] mtd_oobtest: verified 2047 eraseblocks
[ 654.525134] mtd_oobtest: test 4 of 5
[ 657.578146] mtd_oobtest: attempting to start write past end of OOB
[ 657.584336] mtd_oobtest: an error is expected...
[ 657.588974] mtd_oobtest: error occurred as expected
[ 657.593848] mtd_oobtest: attempting to start read past end of OOB
[ 657.599953] mtd_oobtest: an error is expected...
[ 657.604569] mtd_oobtest: error occurred as expected
[ 657.609450] mtd_oobtest: attempting to write past end of device
[ 657.615367] mtd_oobtest: an error is expected...
[ 657.619990] mtd_oobtest: error occurred as expected
[ 657.624864] mtd_oobtest: attempting to read past end of device
[ 657.630715] mtd_oobtest: an error is expected...
[ 657.635333] mtd_oobtest: error occurred as expected
[ 657.641043] mtd_oobtest: attempting to write past end of device
[ 657.646966] mtd_oobtest: an error is expected...
[ 657.651574] mtd_oobtest: error occurred as expected
[ 657.656451] mtd_oobtest: attempting to read past end of device
[ 657.662277] mtd_oobtest: an error is expected...
[ 657.666901] mtd_oobtest: error occurred as expected
[ 657.671774] mtd_oobtest: test 5 of 5
[ 659.382333] mtd_oobtest: writing OOBs of whole device
[ 659.388056] mtd_oobtest: written up to eraseblock 0
[ 659.393526] mtd_oobtest: written up to eraseblock 0
[ 659.704525] mtd_oobtest: written up to eraseblock 256
[ 659.710187] mtd_oobtest: written up to eraseblock 256
[ 660.021093] mtd_oobtest: written up to eraseblock 512
[ 660.026752] mtd_oobtest: written up to eraseblock 512
[ 660.338427] mtd_oobtest: written up to eraseblock 768
[ 660.344048] mtd_oobtest: written up to eraseblock 768
[ 660.655718] mtd_oobtest: written up to eraseblock 1024
[ 660.661462] mtd_oobtest: written up to eraseblock 1024
[ 660.970676] mtd_oobtest: written up to eraseblock 1280
[ 660.976386] mtd_oobtest: written up to eraseblock 1280
[ 661.286858] mtd_oobtest: written up to eraseblock 1536
[ 661.292587] mtd_oobtest: written up to eraseblock 1536
[ 661.605397] mtd_oobtest: written up to eraseblock 1792
[ 661.611142] mtd_oobtest: written up to eraseblock 1792
[ 661.918754] mtd_oobtest: written 2046 eraseblocks
[ 661.923458] mtd_oobtest: verifying all eraseblocks
[ 661.928812] mtd_oobtest: verified up to eraseblock 0
[ 662.072499] mtd_oobtest: verified up to eraseblock 256
[ 662.216152] mtd_oobtest: verified up to eraseblock 512
[ 662.359956] mtd_oobtest: verified up to eraseblock 768
[ 662.503238] mtd_oobtest: verified up to eraseblock 1024
[ 662.646847] mtd_oobtest: verified up to eraseblock 1280
[ 662.790603] mtd_oobtest: verified up to eraseblock 1536
[ 662.934269] mtd_oobtest: verified up to eraseblock 1792
[ 663.076329] mtd_oobtest: verified 2046 eraseblocks
[ 663.081114] mtd_oobtest: finished with 0 errors
[ 663.085647] =================================================
root@...nWrt:/lib/modules/6.6.79# insmod mtd_pagetest.ko dev=1
[ 1142.213082]
[ 1142.214590] =================================================
[ 1142.220433] mtd_pagetest: MTD device: 1
[ 1142.224278] mtd_pagetest: MTD device size 268304384, eraseblock size 131072, page size 2048, count of eraseblocks 2047, pages per eraseblock 64, OOB size 128
[ 1142.238388] mtd_test: scanning for bad eraseblocks
[ 1142.243536] mtd_test: scanned 2047 eraseblocks, 0 are bad
[ 1142.248935] mtd_pagetest: erasing whole device
[ 1143.962562] mtd_pagetest: erased 2047 eraseblocks
[ 1143.967301] mtd_pagetest: writing whole device
[ 1144.011729] mtd_pagetest: written up to eraseblock 0
[ 1154.137933] mtd_pagetest: written up to eraseblock 256
[ 1164.265201] mtd_pagetest: written up to eraseblock 512
[ 1174.393365] mtd_pagetest: written up to eraseblock 768
[ 1184.525700] mtd_pagetest: written up to eraseblock 1024
[ 1194.650920] mtd_pagetest: written up to eraseblock 1280
[ 1204.773676] mtd_pagetest: written up to eraseblock 1536
[ 1214.896934] mtd_pagetest: written up to eraseblock 1792
[ 1224.942600] mtd_pagetest: written 2047 eraseblocks
[ 1224.947410] mtd_pagetest: verifying all eraseblocks
[ 1225.053133] mtd_pagetest: verified up to eraseblock 0
[ 1250.760034] mtd_pagetest: verified up to eraseblock 256
[ 1276.448242] mtd_pagetest: verified up to eraseblock 512
[ 1302.138825] mtd_pagetest: verified up to eraseblock 768
[ 1327.824020] mtd_pagetest: verified up to eraseblock 1024
[ 1353.532178] mtd_pagetest: verified up to eraseblock 1280
[ 1379.234385] mtd_pagetest: verified up to eraseblock 1536
[ 1404.943865] mtd_pagetest: verified up to eraseblock 1792
[ 1430.468816] mtd_pagetest: verified 2047 eraseblocks
[ 1430.473702] mtd_pagetest: crosstest
[ 1430.477717] mtd_pagetest: reading page at 0x0
[ 1430.482328] mtd_pagetest: reading page at 0xffdf800
[ 1430.487469] mtd_pagetest: reading page at 0x0
[ 1430.492084] mtd_pagetest: verifying pages read at 0x0 match
[ 1430.497668] mtd_pagetest: crosstest ok
[ 1430.501409] mtd_pagetest: erasecrosstest
[ 1430.505323] mtd_pagetest: erasing block 0
[ 1430.511511] mtd_pagetest: writing 1st page of block 0
[ 1430.517166] mtd_pagetest: reading 1st page of block 0
[ 1430.522505] mtd_pagetest: verifying 1st page of block 0
[ 1430.527739] mtd_pagetest: erasing block 0
[ 1430.532565] mtd_pagetest: writing 1st page of block 0
[ 1430.538229] mtd_pagetest: erasing block 2046
[ 1430.544181] mtd_pagetest: reading 1st page of block 0
[ 1430.549498] mtd_pagetest: verifying 1st page of block 0
[ 1430.554718] mtd_pagetest: erasecrosstest ok
[ 1430.558900] mtd_pagetest: erasetest
[ 1430.562381] mtd_pagetest: erasing block 0
[ 1430.567208] mtd_pagetest: writing 1st page of block 0
[ 1430.572858] mtd_pagetest: erasing block 0
[ 1430.577680] mtd_pagetest: reading 1st page of block 0
[ 1430.582990] mtd_pagetest: verifying 1st page of block 0 is all 0xff
[ 1430.589279] mtd_pagetest: erasetest ok
[ 1430.593023] mtd_pagetest: finished with 0 errors
[ 1430.597651] =================================================
root@...nWrt:/lib/modules/6.6.79# insmod mtd_readtest.ko dev=1
[ 1478.691648]
[ 1478.693158] =================================================
[ 1478.698981] mtd_readtest: MTD device: 1
[ 1478.702829] mtd_readtest: MTD device size 268304384, eraseblock size 131072, page size 2048, count of eraseblocks 2047, pages per eraseblock 64, OOB size 128
[ 1478.716939] mtd_test: scanning for bad eraseblocks
[ 1478.722072] mtd_test: scanned 2047 eraseblocks, 0 are bad
[ 1478.727475] mtd_readtest: testing page read
[ 1548.352125] mtd_readtest: finished
[ 1548.355553] =================================================
root@...nWrt:/lib/modules/6.6.79# insmod mtd_speedtest.ko dev=1
[ 1617.353002]
[ 1617.354511] =================================================
[ 1617.360332] mtd_speedtest: MTD device: 1
[ 1617.364258] mtd_speedtest: MTD device size 268304384, eraseblock size 131072, page size 2048, count of eraseblocks 2047, pages per eraseblock 64, OOB size 128
[ 1617.380150] mtd_test: scanning for bad eraseblocks
[ 1617.385428] mtd_test: scanned 2047 eraseblocks, 0 are bad
[ 1621.021861] mtd_speedtest: testing eraseblock write speed
[ 1700.915306] mtd_speedtest: eraseblock write speed is 3279 KiB/s
[ 1700.921250] mtd_speedtest: testing eraseblock read speed
[ 1734.931886] mtd_speedtest: eraseblock read speed is 7705 KiB/s
[ 1738.682742] mtd_speedtest: testing page write speed
[ 1818.818644] mtd_speedtest: page write speed is 3269 KiB/s
[ 1818.824058] mtd_speedtest: testing page read speed
[ 1852.913595] mtd_speedtest: page read speed is 7687 KiB/s
[ 1856.674492] mtd_speedtest: testing 2 page write speed
[ 1936.437284] mtd_speedtest: 2 page write speed is 3285 KiB/s
[ 1936.442869] mtd_speedtest: testing 2 page read speed
[ 1970.498124] mtd_speedtest: 2 page read speed is 7694 KiB/s
[ 1970.503624] mtd_speedtest: Testing erase speed
[ 1974.343389] mtd_speedtest: erase speed is 68316 KiB/s
[ 1974.348479] mtd_speedtest: Testing 2x multi-block erase speed
[ 1976.068855] mtd_speedtest: 2x multi-block erase speed is 152811 KiB/s
[ 1976.075309] mtd_speedtest: Testing 4x multi-block erase speed
[ 1977.790232] mtd_speedtest: 4x multi-block erase speed is 153301 KiB/s
[ 1977.796693] mtd_speedtest: Testing 8x multi-block erase speed
[ 1979.511905] mtd_speedtest: 8x multi-block erase speed is 153273 KiB/s
[ 1979.518367] mtd_speedtest: Testing 16x multi-block erase speed
[ 1981.230700] mtd_speedtest: 16x multi-block erase speed is 153539 KiB/s
[ 1981.237249] mtd_speedtest: Testing 32x multi-block erase speed
[ 1982.948381] mtd_speedtest: 32x multi-block erase speed is 153648 KiB/s
[ 1982.954918] mtd_speedtest: Testing 64x multi-block erase speed
[ 1984.665992] mtd_speedtest: 64x multi-block erase speed is 153655 KiB/s
[ 1984.672531] mtd_speedtest: finished
[ 1984.676054] =================================================
root@...nWrt:/lib/modules/6.6.79# insmod mtd_stresstest.ko dev=1
[ 2190.651750]
[ 2190.653263] =================================================
[ 2190.659087] mtd_stresstest: MTD device: 1
[ 2190.663105] mtd_stresstest: MTD device size 268304384, eraseblock size 131072, page size 2048, count of eraseblocks 2047, pages per eraseblock 64, OOB size 128
[ 2190.679846] mtd_test: scanning for bad eraseblocks
[ 2190.684981] mtd_test: scanned 2047 eraseblocks, 0 are bad
[ 2190.690389] mtd_stresstest: doing operations
[ 2190.694655] mtd_stresstest: 0 operations done
[ 2214.262705] mtd_stresstest: 1024 operations done
[ 2239.019612] mtd_stresstest: 2048 operations done
[ 2262.820899] mtd_stresstest: 3072 operations done
[ 2285.061376] mtd_stresstest: 4096 operations done
[ 2308.297322] mtd_stresstest: 5120 operations done
[ 2330.530459] mtd_stresstest: 6144 operations done
[ 2352.651759] mtd_stresstest: 7168 operations done
[ 2375.188275] mtd_stresstest: 8192 operations done
[ 2397.738174] mtd_stresstest: 9216 operations done
[ 2414.792572] mtd_stresstest: finished, 10000 operations done
[ 2414.798257] =================================================
4) Speed test of original driver (with patch to fix support of flashes
with more than one plane per lun)
root@...nWrt:/lib/modules/6.6.79# insmod mtd_speedtest.ko dev=1
[ 2894.142208]
[ 2894.143719] =================================================
[ 2894.149556] mtd_speedtest: MTD device: 1
[ 2894.153486] mtd_speedtest: MTD device size 268304384, eraseblock size 131072, page size 2048, count of eraseblocks 2047, pages per eraseblock 64, OOB size 128
[ 2894.168888] mtd_test: scanning for bad eraseblocks
[ 2894.174023] mtd_test: scanned 2047 eraseblocks, 0 are bad
[ 2897.500416] mtd_speedtest: testing eraseblock write speed
[ 2977.807233] mtd_speedtest: eraseblock write speed is 3262 KiB/s
[ 2977.813171] mtd_speedtest: testing eraseblock read speed
[ 3013.906597] mtd_speedtest: eraseblock read speed is 7260 KiB/s
[ 3017.440320] mtd_speedtest: testing page write speed
[ 3097.833394] mtd_speedtest: page write speed is 3259 KiB/s
[ 3097.838812] mtd_speedtest: testing page read speed
[ 3134.004981] mtd_speedtest: page read speed is 7245 KiB/s
[ 3137.538423] mtd_speedtest: testing 2 page write speed
[ 3217.906288] mtd_speedtest: 2 page write speed is 3260 KiB/s
[ 3217.911883] mtd_speedtest: testing 2 page read speed
[ 3254.049757] mtd_speedtest: 2 page read speed is 7251 KiB/s
[ 3254.055254] mtd_speedtest: Testing erase speed
[ 3257.599146] mtd_speedtest: erase speed is 74027 KiB/s
[ 3257.604213] mtd_speedtest: Testing 2x multi-block erase speed
[ 3259.320945] mtd_speedtest: 2x multi-block erase speed is 153139 KiB/s
[ 3259.327413] mtd_speedtest: Testing 4x multi-block erase speed
[ 3261.044585] mtd_speedtest: 4x multi-block erase speed is 153098 KiB/s
[ 3261.051047] mtd_speedtest: Testing 8x multi-block erase speed
[ 3262.786520] mtd_speedtest: 8x multi-block erase speed is 151479 KiB/s
[ 3262.792979] mtd_speedtest: Testing 16x multi-block erase speed
[ 3264.509898] mtd_speedtest: 16x multi-block erase speed is 153130 KiB/s
[ 3264.516454] mtd_speedtest: Testing 32x multi-block erase speed
[ 3266.233403] mtd_speedtest: 32x multi-block erase speed is 153125 KiB/s
[ 3266.239961] mtd_speedtest: Testing 64x multi-block erase speed
[ 3267.957985] mtd_speedtest: 64x multi-block erase speed is 153029 KiB/s
[ 3267.964525] mtd_speedtest: finished
[ 3267.968039] =================================================
It looks like a patched driver is a bit faster
write speed: 3260 KiB/s vs 3277 KiB/s
read speed: 7252 KiB/s vs 7695 KiB/s
Changes v2:
* minor fix
* add comments to code
Changes v3:
* add patch to prevent continuous reading
Changes v4:
* removed non-needed patch, other patch was a bit updated
* treat zero buswidth as single wire buswidth (thanks to Jyothi Kumar Seerapu)
* changes were tested with linux
* test results was added
Mikhail Kshevetskiy (13):
spi: airoha: return an error for continuous mode dirmap creation cases
spi: airoha: remove unnecessary restriction length
spi: airoha: add support of dual/quad wires spi modes
spi: airoha: remove unnecessary switch to non-dma mode
spi: airoha: unify dirmap read/write code
spi: airoha: switch back to non-dma mode in the case of error
spi: airoha: fix reading/writing of flashes with more than one plane
per lun
spi: airoha: support of dualio/quadio flash reading commands
spi: airoha: avoid setting of page/oob sizes in REG_SPI_NFI_PAGEFMT
spi: airoha: reduce the number of modification of REG_SPI_NFI_CNFG and
REG_SPI_NFI_SECCUS_SIZE registers
spi: airoha: set custom sector size equal to flash page size
spi: airoha: avoid reading flash page settings from SNFI registers
during driver startup
spi: airoha: buffer must be 0xff-ed before writing
drivers/spi/spi-airoha-snfi.c | 510 +++++++++++++++++-----------------
1 file changed, 262 insertions(+), 248 deletions(-)
--
2.50.1
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