Chia-I Wu 4e04683022 drm/panthor: add custom ASN_HASH support for mt8196
Add panthor_soc_data to control custom ASN_HASH. Add compatible string
for "mediatek,mt8196-mali" and enable custom ASN_HASH for the soc.

Without custom ASN_HASH, FW fails to boot

  panthor 48000000.gpu: [drm] *ERROR* Unhandled Page fault in AS0 at VA 0x0000000000000000
  panthor 48000000.gpu: [drm] *ERROR* Failed to boot MCU (status=fatal)
  panthor 48000000.gpu: probe with driver panthor failed with error -110

With custom ASN_HASH, panthor probes fine and userspace boots to ui just
fine as well

  panthor 48000000.gpu: [drm] clock rate = 0
  panthor 48000000.gpu: EM: created perf domain
  panthor 48000000.gpu: [drm] Mali-G925-Immortalis id 0xd830 major 0x0 minor 0x1 status 0x5
  panthor 48000000.gpu: [drm] Features: L2:0x8130306 Tiler:0x809 Mem:0x301 MMU:0x2830 AS:0xff
  panthor 48000000.gpu: [drm] shader_present=0xee0077 l2_present=0x1 tiler_present=0x1
  panthor 48000000.gpu: [drm] Firmware protected mode entry not be supported, ignoring
  panthor 48000000.gpu: [drm] Firmware git sha: 27713280172c742d467a4b7d11180930094092ec
  panthor 48000000.gpu: [drm] CSF FW using interface v3.13.0, Features 0x10 Instrumentation features 0x71
  [drm] Initialized panthor 1.5.0 for 48000000.gpu on minor 1

Note that the clock and the regulator drivers are not upstreamed yet.
They might as well take a different form when upstreamed.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://lore.kernel.org/r/20250913002155.1163908-3-olvaffe@gmail.com
2025-10-06 10:50:59 +01:00
2025-09-15 17:51:07 +10:00
2025-09-15 17:51:07 +10:00
2025-09-15 17:51:07 +10:00
2025-02-19 14:53:27 -07:00
2025-09-14 14:21:14 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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