On 30/11/2020 22:57, Dmitry Osipenko wrote: > 01.12.2020 00:17, Jon Hunter пишет: >> Hi Dmitry, >> >> On 23/11/2020 00:27, Dmitry Osipenko wrote: >>> Add EMC OPP DVFS tables and update board device-trees by removing >>> unsupported OPPs. >>> >>> Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx> >> This change is generating the following warning on Tegra20 Ventana >> and prevents the EMC from probing ... >> >> [ 2.485711] tegra20-emc 7000f400.memory-controller: device-tree doesn't have memory timings >> [ 2.499386] tegra20-emc 7000f400.memory-controller: 32bit DRAM bus >> [ 2.505810] ------------[ cut here ]------------ >> [ 2.510511] WARNING: CPU: 0 PID: 1 at /local/workdir/tegra/mlt-linux_next/kernel/drivers/opp/of.c:875 _of_add_opp_table_v2+0x598/0x61c >> [ 2.529746] Modules linked in: >> [ 2.540140] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.10.0-rc5-next-20201130 #1 >> [ 2.554606] Hardware name: NVIDIA Tegra SoC (Flattened Device Tree) >> [ 2.560892] [<c011136c>] (unwind_backtrace) from [<c010bb60>] (show_stack+0x10/0x14) >> [ 2.568640] [<c010bb60>] (show_stack) from [<c0bcee54>] (dump_stack+0xc8/0xdc) >> [ 2.575866] [<c0bcee54>] (dump_stack) from [<c01235dc>] (__warn+0x104/0x108) >> [ 2.582912] [<c01235dc>] (__warn) from [<c0123690>] (warn_slowpath_fmt+0xb0/0xb8) >> [ 2.590397] [<c0123690>] (warn_slowpath_fmt) from [<c0825ad0>] (_of_add_opp_table_v2+0x598/0x61c) >> [ 2.599269] [<c0825ad0>] (_of_add_opp_table_v2) from [<c0825b90>] (dev_pm_opp_of_add_table+0x3c/0x1a0) >> [ 2.608582] [<c0825b90>] (dev_pm_opp_of_add_table) from [<c087b774>] (tegra_emc_probe+0x478/0x940) >> [ 2.617548] [<c087b774>] (tegra_emc_probe) from [<c0654398>] (platform_drv_probe+0x48/0x98) >> [ 2.625899] [<c0654398>] (platform_drv_probe) from [<c0652238>] (really_probe+0x218/0x3b8) >> [ 2.634162] [<c0652238>] (really_probe) from [<c0652540>] (driver_probe_device+0x5c/0xb4) >> [ 2.642338] [<c0652540>] (driver_probe_device) from [<c0652740>] (device_driver_attach+0x58/0x60) >> [ 2.651208] [<c0652740>] (device_driver_attach) from [<c06527c8>] (__driver_attach+0x80/0xbc) >> [ 2.659730] [<c06527c8>] (__driver_attach) from [<c0650610>] (bus_for_each_dev+0x74/0xb4) >> [ 2.667905] [<c0650610>] (bus_for_each_dev) from [<c06515f8>] (bus_add_driver+0x164/0x1e8) >> [ 2.676168] [<c06515f8>] (bus_add_driver) from [<c06532a8>] (driver_register+0x7c/0x114) >> [ 2.684259] [<c06532a8>] (driver_register) from [<c0102208>] (do_one_initcall+0x54/0x2b0) >> [ 2.692441] [<c0102208>] (do_one_initcall) from [<c10010cc>] (kernel_init_freeable+0x1a4/0x1f4) >> [ 2.701145] [<c10010cc>] (kernel_init_freeable) from [<c0bd4510>] (kernel_init+0x8/0x118) >> [ 2.709321] [<c0bd4510>] (kernel_init) from [<c01001b0>] (ret_from_fork+0x14/0x24) >> [ 2.716885] Exception stack(0xc1501fb0 to 0xc1501ff8) >> [ 2.721933] 1fa0: 00000000 00000000 00000000 00000000 >> [ 2.730106] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 >> [ 2.738278] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 >> [ 2.751940] ---[ end trace 61e3b76deca27ef3 ]--- >> >> >> Cheers >> Jon >> > > Hello Jon, > > That is harmless and expected to happen because the patch "memory: > tegra20: Support hardware versioning and clean up OPP table > initialization" isn't applied yet, while Thierry already applied the DT > patches from this v10. Thanks, pulling in that patch did fix it. Jon -- nvpublic
