[linux-nvidia-6.17] Backport NVIDIA: VR: SAUCE: soc/tegra: misc: Use SMCCC to get chipid

[nvmochs]

Tegra410 and Tegra241 have deprecated HIDREV register. It is recommended to use ARM SMCCC calls to get chip_id, major and minor revisions.

Use ARM SMCCC to get chip_id, major and minor revision.

---

This OOT patch is needed for the VR platform to avoid these warnings:

[   14.860697] Tegra APB MISC not yet available
[   14.860741] WARNING: CPU: 5 PID: 1 at drivers/soc/tegra/fuse/tegra-apbmisc.c:37 tegra_get_chip_id+0x58/0x88
[   14.863038] Modules linked in:
[   14.988004] Freeing initrd memory: 78908K
[   25.193803] CPU: 5 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.18.2+ #2 PREEMPT(none) 
[   25.201529] Hardware name: NVIDIA VR200 NVL72/P3809-BMC, BIOS 00.01.00.08 2026-01-03T21:17:31+00:00
[   25.210378] pstate: 61000009 (nZCv daif -PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[   25.217252] pc : tegra_get_chip_id+0x58/0x88
[   25.221720] lr : tegra_get_chip_id+0x58/0x88
[   25.225931] sp : ffff800080b3ba90
[   25.229110] x29: ffff800080b3ba90 x28: ffff080019014780 x27: ffffb72a42e72520
[   25.236156] x26: ffffb72a42fcb000 x25: 000000000000010b x24: 0000000000000000
[   25.243202] x23: ffffb72a44caf000 x22: ffff08002638f800 x21: ffff08002638f810
[   25.250248] x20: ffffb72a44caf1e8 x19: ffffb72a44caf310 x18: ffff800080b1b080
[   25.257294] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[   25.264340] x14: ffffffffffffffff x13: 0a656c62616c6961 x12: 7661207465792074
[   25.271385] x11: 6f6e204353494d20 x10: 4250412061726765 x9 : 0000000000000000
[   25.278431] x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
[   25.285477] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000
[   25.292523] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
[   25.299570] Call trace:
[   25.301805]  tegra_get_chip_id+0x58/0x88 (P)
[   25.306272]  tegra_fuse_probe+0x26c/0x430
[   25.310138]  platform_probe+0x74/0x100
[   25.313747]  really_probe+0xd8/0x3e8
[   25.317442]  __driver_probe_device+0x94/0x1c8
[   25.321653]  driver_probe_device+0x48/0x188
[   25.325605]  __driver_attach+0x14c/0x2c8
[   25.329729]  bus_for_each_dev+0x88/0x110
[   25.333596]  driver_attach+0x30/0x60
[   25.337119]  bus_add_driver+0x17c/0x2e8
[   25.340642]  driver_register+0x68/0x178
[   25.344422]  __platform_driver_register+0x30/0x60
[   25.349234]  tegra_fuse_driver_init+0x28/0x50
[   25.353531]  do_one_initcall+0x64/0x378
[   25.357140]  kernel_init_freeable+0x23c/0x500
[   25.361608]  kernel_init+0x3c/0x258
[   25.364873]  ret_from_fork+0x10/0x20
[   25.368654] ---[ end trace 0000000000000000 ]---
[   25.373229] tegra-fuse NVDA200F:00: error -EINVAL: Unsupported SoC: 00
[   25.373248] tegra-fuse NVDA200F:00: probe with driver tegra-fuse failed with error -22
[   25.373801] ------------[ cut here ]------------

This patch will be posted to LKML in the near future.

After building the kernel with this patch, I verified that the warnings are no longer present on a VR system.

LP: https://bugs.launchpad.net/ubuntu/+source/linux-nvidia/+bug/2138329

[clsotog]

Acked-by: Carol L Soto <csoto@nvidia.com>

[jamieNguyenNVIDIA]

Acked-by: Jamie Nguyen <jamien@nvidia.com>

[clsotog]

Acked-by: Carol L Soto <csoto@nvidia.com>