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Clément Péron 71ce27ba9d drm/panfrost: devfreq: set opp to the recommended one to configure regulator 
[ Upstream commit d76034a427 ]

Enabling panfrost GPU OPP with dynamic regulator will make OPP
responsible to enable and configure it.

Unfortunately OPP configure and enable the regulator when an OPP
is asked to be set, which is not the case during
panfrost_devfreq_init().

This leave the regulator unconfigured and if no GPU load is
triggered, no OPP is asked to be set which make the regulator framework
switching it off during regulator_late_cleanup() without
noticing and therefore make the board hang as any access to GPU
memory space make bus locks up.

Call dev_pm_opp_set_opp() with the recommend OPP in
panfrost_devfreq_init() to enable the regulator, this will properly
configure and enable the regulator and will avoid any switch off
by regulator_late_cleanup().

Suggested-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220906153034.153321-5-peron.clem@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-04-19 17:53:56 +08:00
arch MIPS: OCTEON: irq: Fix octeon_irq_force_ciu_mapping() 2023-04-19 17:53:56 +08:00
block block: blk_queue_enter() / __bio_queue_enter() must return -EAGAIN for nowait 2023-04-19 17:53:54 +08:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2023-04-19 17:50:34 +08:00
crypto KEYS: asymmetric: enforce SM2 signature use pkey algo 2023-04-19 17:52:55 +08:00
Documentation Input: iforce - add support for Boeder Force Feedback Wheel 2023-04-19 17:53:52 +08:00
drivers drm/panfrost: devfreq: set opp to the recommended one to configure regulator 2023-04-19 17:53:56 +08:00
fs afs: Return -EAGAIN, not -EREMOTEIO, when a file already locked 2023-04-19 17:53:56 +08:00
include of/device: Fix up of_dma_configure_id() stub 2023-04-19 17:53:54 +08:00
init stack: Declare {randomize_,}kstack_offset to fix Sparse warnings 2023-04-19 17:52:12 +08:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2023-04-19 17:49:52 +08:00
kernel tracing: hold caller_addr to hardirq_{enable,disable}_ip 2023-04-19 17:53:51 +08:00
lib crypto: lib - remove unneeded selection of XOR_BLOCKS 2023-04-19 17:53:28 +08:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
mm mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region() 2023-04-19 17:53:53 +08:00
net rxrpc: Fix calc of resend age 2023-04-19 17:53:55 +08:00
samples samples/landlock: Format with clang-format 2023-04-19 17:50:01 +08:00
scripts kbuild: fix up permissions on scripts/pahole-flags.sh 2023-04-19 17:53:41 +08:00
security apparmor: Fix memleak in aa_simple_write_to_buffer() 2023-04-19 17:53:01 +08:00
sound ALSA: hda/tegra: Align BDL entry to 4KB boundary 2023-04-19 17:53:56 +08:00
tools tools/include/uapi: Fix <asm/errno.h> for parisc and xtensa 2023-04-19 17:53:55 +08:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2023-04-19 17:44:58 +08:00
virt KVM: Unconditionally get a ref to /dev/kvm module when creating a VM 2023-04-19 17:52:58 +08:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap mailmap: add Andrej Shadura 2021-10-18 20:22:03 -10:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Daniel Drake to credits 2021-09-21 08:34:58 +03:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Input: goodix - add a goodix.h header file 2023-04-19 17:50:59 +08:00
Makefile Linux 5.15.69 2023-04-19 17:53:53 +08:00
README

README 

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 Restructured Text 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.