On Fri, Jan 8, 2021 at 7:45 AM Adam Ford <aford173@xxxxxxxxx> wrote: > > On Fri, Jan 8, 2021 at 1:22 AM Tony Lindgren <tony@xxxxxxxxxxx> wrote: > > > > * H. Nikolaus Schaller <hns@xxxxxxxxxxxxx> [201230 13:29]: > > > > Am 30.12.2020 um 13:55 schrieb Adam Ford <aford173@xxxxxxxxx>: > > > > On Wed, Dec 30, 2020 at 2:43 AM Tony Lindgren <tony@xxxxxxxxxxx> wrote: > > > >> > > > >> At least for 4430, trying to use the single conversion mode eventually > > > >> hangs the thermal sensor. This can be quite easily seen with errors: > > > >> > > > >> thermal thermal_zone0: failed to read out thermal zone (-5) > > ... > > > > > > I don't have an OMAP4, but if you want, I can test a DM3730. > > > > > > Indeed I remember a similar discussion from the DM3730 [1]. temp values were > > > always those from the last measurement. E.g. the first one was done > > > during (cold) boot and the first request after 10 minutes did show a > > > quite cold system... The next one did show a hot system independent > > > of what had been between (suspend or high activity). > > > > > > It seems as if it was even reproducible with a very old kernel on a BeagleBoard. > > > So it is quite fundamental. > > > > > > We tried to fix it but did not come to a solution [2]. So we opened an issue > > > in our tracker [3] and decided to stay with continuous conversion although this > > > raises idle mode processor load. > > > > Hmm so maybe eocz high always times out in single mode since it also > > triggers at least on dra7? > > > > Yes it would be great if you guys can the $subject patch a try at > > least on your omap36xx and omap5 boards and see if you see eocz > > time out warnings in dmesg. > > I should be able to try it on the dm3730 logicpd-torpedo kit this weekend. I am going to be a bit delayed testing this. I cannot boot omap2plus using Linux version 5.11.0-rc2. [ 2.666748] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xbc [ 2.673309] nand: Micron MT29F4G16ABBDA3W [ 2.677368] nand: 512 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64 [ 2.685119] nand: using OMAP_ECC_BCH8_CODE_HW_DETECTION_SW [ 2.693237] Invalid ECC layout [ 2.696350] omap2-nand 30000000.nand: unable to use BCH library [ 2.702575] omap2-nand: probe of 30000000.nand failed with error -22 [ 2.716094] 8<--- cut here --- [ 2.719207] Unable to handle kernel NULL pointer dereference at virtual address 00000018 [ 2.727600] pgd = (ptrval) ... [ 3.050933] ---[ end trace 59640c7399a80a07 ]--- [ 3.055603] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 3.063323] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]--- Once I get past this, I'll try to test the thermal stuff. adam > > adam > > > > Regards, > > > > Tony
