Merge tag 'devicetree-fixes-for-6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

- Fix potential memory leak in of_changeset_action()

-

Merge tag 'devicetree-fixes-for-6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

- Fix potential memory leak in of_changeset_action()

- Fix some i.MX binding warnings

- Fix typo in renesas,vin binding field-even-active property

- Fix andestech,ax45mp-cache example unit-address

- Add missing additionalProperties on RiscV CPU interrupt-controller
node

- Add missing unevaluatedProperties on media bindings

- Fix brcm,iproc-pcie binding 'msi' child node schema

- Fix MEMSIC MXC4005 compatible string

* tag 'devicetree-fixes-for-6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: trivial-devices: Fix MEMSIC MXC4005 compatible string
dt-bindings: PCI: brcm,iproc-pcie: Fix 'msi' child node schema
dt-bindings: PCI: brcm,iproc-pcie: Drop common pci-bus properties
dt-bindings: PCI: brcm,iproc-pcie: Fix example indentation
media: dt-bindings: Add missing unevaluatedProperties on child node schemas
dt-bindings: bus: fsl,imx8qxp-pixel-link-msi-bus: Drop child 'reg' property
media: dt-bindings: imx7-csi: Make power-domains not required for imx8mq
dt-bindings: media: renesas,vin: Fix field-even-active spelling
dt-bindings: cache: andestech,ax45mp-cache: Fix unit address in example
of: overlay: Reorder struct fragment fields kerneldoc
dt-bindings: display: fsl,imx6-hdmi: Change to 'unevaluatedProperties: false'
dt-bindings: riscv: cpus: Add missing additionalProperties on interrupt-controller node
of: dynamic: Fix potential memory leak in of_changeset_action()

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dt-bindings: riscv: cpus: Add missing additionalProperties on interrupt-controller node

The "interrupt-controller" CPU child node is missing constraints on
extra properties. Add "additionalPropertie

dt-bindings: riscv: cpus: Add missing additionalProperties on interrupt-controller node

The "interrupt-controller" CPU child node is missing constraints on
extra properties. Add "additionalProperties: false" to fix this.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230915201946.4184468-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>

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Merge branch 'next' into for-linus

Prepare input updates for 6.6 merge window.

Merge drm/drm-next into drm-intel-next

Catching-up with drm-next and drm-intel-gt-next.
It will unblock a code refactor around the platform
definitions (names vs acronyms).

Signed-off-by: Rodrigo V

Merge drm/drm-next into drm-intel-next

Catching-up with drm-next and drm-intel-gt-next.
It will unblock a code refactor around the platform
definitions (names vs acronyms).

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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Merge drm/drm-next into drm-intel-gt-next

Need to pull in b3e4aae612ec ("drm/i915/hdcp: Modify hdcp_gsc_message msg sending mechanism") as
a dependency for https://patchwork.freedesktop.org/series/1

Merge drm/drm-next into drm-intel-gt-next

Need to pull in b3e4aae612ec ("drm/i915/hdcp: Modify hdcp_gsc_message msg sending mechanism") as
a dependency for https://patchwork.freedesktop.org/series/121735/

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

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Merge drm/drm-next into drm-misc-next

Backmerging to get v6.5-rc2.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge tag 'v6.4' into next

Sync up with mainline to bring in updates to shared infrastructure.

ASoC: Merge v6.5-rc2

Get a similar baseline to my other branches, and fixes for people using
the branch.

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Cross-merge networking fixes after downstream PR.

No conflicts or adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge v6.5-rc1 into drm-misc-fixes

Boris needs 6.5-rc1 in drm-misc-fixes to prevent a conflict.

Signed-off-by: Maxime Ripard <mripard@kernel.org>

Merge tag 'riscv-for-linus-6.5-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:

- A bunch of fixes/cleanups from the first part of th

Merge tag 'riscv-for-linus-6.5-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:

- A bunch of fixes/cleanups from the first part of the merge window,
mostly related to ACPI and vector as those were large

- Some documentation improvements, mostly related to the new code

- The "riscv,isa" DT key is deprecated

- Support for link-time dead code elimination

- Support for minor fault registration in userfaultd

- A handful of cleanups around CMO alternatives

* tag 'riscv-for-linus-6.5-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (23 commits)
riscv: mm: mark noncoherent_supported as __ro_after_init
riscv: mm: mark CBO relate initialization funcs as __init
riscv: errata: thead: only set cbom size & noncoherent during boot
riscv: Select HAVE_ARCH_USERFAULTFD_MINOR
RISC-V: Document the ISA string parsing rules for ACPI
risc-v: Fix order of IPI enablement vs RCU startup
mm: riscv: fix an unsafe pte read in huge_pte_alloc()
dt-bindings: riscv: deprecate riscv,isa
RISC-V: drop error print from riscv_hartid_to_cpuid()
riscv: Discard vector state on syscalls
riscv: move memblock_allow_resize() after linear mapping is ready
riscv: Enable ARCH_SUSPEND_POSSIBLE for s2idle
riscv: vdso: include vdso/vsyscall.h for vdso_data
selftests: Test RISC-V Vector's first-use handler
riscv: vector: clear V-reg in the first-use trap
riscv: vector: only enable interrupts in the first-use trap
RISC-V: Fix up some vector state related build failures
RISC-V: Document that V registers are clobbered on syscalls
riscv: disable HAVE_LD_DEAD_CODE_DATA_ELIMINATION for LLD
riscv: enable HAVE_LD_DEAD_CODE_DATA_ELIMINATION
...

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dt-bindings: riscv: deprecate riscv,isa

intro
=====

When the RISC-V dt-bindings were accepted upstream in Linux, the base
ISA etc had yet to be ratified. By the ratification of the base ISA,
incomp

dt-bindings: riscv: deprecate riscv,isa

intro
=====

When the RISC-V dt-bindings were accepted upstream in Linux, the base
ISA etc had yet to be ratified. By the ratification of the base ISA,
incompatible changes had snuck into the specifications - for example the
Zicsr and Zifencei extensions were spun out of the base ISA.

Fast forward to today, and the reason for this patch.
Currently the riscv,isa dt property permits only a specific subset of
the ISA string - in particular it excludes version numbering.
With the current constraints, it is not possible to discern whether
"rv64i" means that the hart supports the fence.i instruction, for
example.
Future systems may choose to implement their own instruction fencing,
perhaps using a vendor extension, or they may not implement the optional
counter extensions. Software needs a way to determine this.

versioning schemes
==================

"Use the extension versions that are described in the ISA manual" you
may say, and it's not like this has not been considered.
Firstly, software that parses the riscv,isa property at runtime will
need to contain a lookup table of some sort that maps arbitrary versions
to versions it understands. There is not a consistent application of
version number applied to extensions, with a higgledy-piggledy
collection of tags, "bare" and versioned documents awaiting the reader
on the "recently ratified extensions" page:
https://wiki.riscv.org/display/HOME/Recently+Ratified+Extensions

As an aside, and this is reflected in the patch too, since many
extensions have yet to appear in a release of the ISA specs,
they are defined by commits in their respective "working draft"
repositories.

Secondly, there is an issue of backwards compatibility, whereby allowing
numbers in the ISA string, some parsers may be broken. This would
require an additional property to be created to even use the versions in
this manner.

~boolean properties~ string array property
==========================================

If a new property is needed, the whole approach may as well be looked at
from the bottom up. A string with limited character choices etc is
hardly the best approach for communicating extension information to
software.

Switching to using properties that are defined on a per extension basis,
allows us to define explicit meanings for the DT representation of each
extension - rather than the current situation where different operating
systems or other bits of software may impart different meanings to
characters in the string.
Clearly the best source of meanings is the specifications themselves,
this just provides us the ability to choose at what point in time the
meaning is set. If an extension changes incompatibility in the future,
a new property will be required.

Off-list, some of the RVI folks have committed to shoring up the wording
in either the ISA specifications, the riscv-isa-manual or
so that in the future, modifications to and additions or removals of
features will require a new extension. Codifying that assertion
somewhere would make it quite unlikely that compatibility would be
broken, but we have the tools required to deal with it, if & when it
crops up.
It is in our collective interest, as consumers of extension meanings, to
define a scheme that enforces compatibility.

The use of individual elements, rather than a single string, will also
permit validation that the properties have a meaning, as well as
potentially reject mutually exclusive combinations, or enforce
dependencies between extensions. That would not have be possible with
the current dt-schema infrastructure for arbitrary strings, as we would
need to add a riscv,isa parser to dt-validate!
That's not implemented in this patch, but rather left as future work (for
the brave, or the foolish).

parser simplicity
=================

Many systems that parse DT at runtime already implement an function that
can check for the presence of a string in an array of string, as it is
similar to the process for parsing a list of compatible strings, so a
bunch of new, custom, DT parsing should not be needed.
Getting rid of "riscv,isa" parsing would be a nice simplification, but
unfortunately for backwards compatibility with old dtbs, existing
parsers may not be removable - which may greatly simplify
dt parsing code. In Linux, for example, checking for whether a hart
supports an extension becomes as simple as:
of_property_match_string(node, "riscv,isa-extensions", "zicbom")

vendor extensions
=================

Compared to riscv,isa, this proposed scheme promotes vendor extensions,
oft touted as the strength of RISC-V, to first-class citizens.
At present, extensions are defined as meaning what the RISC-V ISA
specifications say they do. There is no realistic way of using that
interface to provide cross-platform definitions for what vendor
extensions mean. Vendor extensions may also have even less consistency
than RVI do in terms of versioning, or no care about backwards
compatibility.
The new property allows us to assign explicit meanings on a per vendor
extension basis, backed up by a description of their meanings.

fin
===

Create a new file to store the extension meanings and a new
riscv,isa-base property to replace the aspect of riscv,isa that is
not represented by the new property - the base ISA implemented by a hart.

As a starting point, add properties for extensions currently used in
Linux.

Finally, mark riscv,isa as deprecated, as removing support for it in
existing programs would be an ABI break.

CC: Palmer Dabbelt <palmer@dabbelt.com>
CC: Paul Walmsley <paul.walmsley@sifive.com>
CC: Rob Herring <robh+dt@kernel.org>
CC: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
CC: Alistair Francis <alistair.francis@wdc.com>
CC: Andrew Jones <ajones@ventanamicro.com>
CC: Anup Patel <apatel@ventanamicro.com>
CC: Atish Patra <atishp@atishpatra.org>
CC: Jessica Clarke <jrtc27@jrtc27.com>
CC: Rick Chen <rick@andestech.com>
CC: Leo <ycliang@andestech.com>
CC: Oleksii <oleksii.kurochko@gmail.com>
CC: linux-riscv@lists.infradead.org
CC: qemu-riscv@nongnu.org
CC: u-boot@lists.denx.de
CC: devicetree@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230702-eats-scorebook-c951f170d29f@spud
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

show more ...

Merge branch 'master' into mm-hotfixes-stable

Merge tag 'riscv-for-linus-6.5-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

- Support for ACPI

- Various cleanups to the ISA string

Merge tag 'riscv-for-linus-6.5-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

- Support for ACPI

- Various cleanups to the ISA string parsing, including making them
case-insensitive

- Support for the vector extension

- Support for independent irq/softirq stacks

- Our CPU DT binding now has "unevaluatedProperties: false"

* tag 'riscv-for-linus-6.5-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (78 commits)
riscv: hibernate: remove WARN_ON in save_processor_state
dt-bindings: riscv: cpus: switch to unevaluatedProperties: false
dt-bindings: riscv: cpus: add a ref the common cpu schema
riscv: stack: Add config of thread stack size
riscv: stack: Support HAVE_SOFTIRQ_ON_OWN_STACK
riscv: stack: Support HAVE_IRQ_EXIT_ON_IRQ_STACK
RISC-V: always report presence of extensions formerly part of the base ISA
dt-bindings: riscv: explicitly mention assumption of Zicntr & Zihpm support
RISC-V: remove decrement/increment dance in ISA string parser
RISC-V: rework comments in ISA string parser
RISC-V: validate riscv,isa at boot, not during ISA string parsing
RISC-V: split early & late of_node to hartid mapping
RISC-V: simplify register width check in ISA string parsing
perf: RISC-V: Limit the number of counters returned from SBI
riscv: replace deprecated scall with ecall
riscv: uprobes: Restore thread.bad_cause
riscv: mm: try VMA lock-based page fault handling first
riscv: mm: Pre-allocate PGD entries for vmalloc/modules area
RISC-V: hwprobe: Expose Zba, Zbb, and Zbs
RISC-V: Track ISA extensions per hart
...

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Merge branch 'for-6.5/apple' into for-linus

- improved support for Keychron K8 keyboard (Lasse Brun)

Merge patch series "dt-bindings: riscv: cpus: switch to unevaluatedProperties: false"

Conor Dooley <conor@kernel.org> says:

From: Conor Dooley <conor.dooley@microchip.com>

Do the various bits need

Merge patch series "dt-bindings: riscv: cpus: switch to unevaluatedProperties: false"

Conor Dooley <conor@kernel.org> says:

From: Conor Dooley <conor.dooley@microchip.com>

Do the various bits needed to drop the additionalProperties: true that
we currently have in riscv/cpu.yaml, to permit actually enforcing what
people put in cpus nodes.

* b4-shazam-merge:
dt-bindings: riscv: cpus: switch to unevaluatedProperties: false
dt-bindings: riscv: cpus: add a ref the common cpu schema

Link: https://lore.kernel.org/r/20230615-creamer-emu-ade0fa0bdb68@spud
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Merge patch series "ISA string parser cleanups"

Conor Dooley <conor@kernel.org> says:

From: Conor Dooley <conor.dooley@microchip.com>

Here are some bits that were discussed with Drew on the "shoul

Merge patch series "ISA string parser cleanups"

Conor Dooley <conor@kernel.org> says:

From: Conor Dooley <conor.dooley@microchip.com>

Here are some bits that were discussed with Drew on the "should we
allow caps" threads that I have now created patches for:
- splitting of riscv_of_processor_hartid() into two distinct functions,
one for use purely during early boot, prior to the establishment of
the possible-cpus mask & another to fit the other current use-cases
- that then allows us to then completely skip some validation of the
hartid in the parser
- the biggest diff in the series is a rework of the comments in the
parser, as I have mostly found the existing (sparse) ones to not be
all that helpful whenever I have to go back and look at it
- from writing the comments, I found a conditional doing a bit of a
dance that I found counter-intuitive, so I've had a go at making that
match what I would expect a little better
- `i` implies 4 other extensions, so add them as extensions and set
them for the craic. Sure why not like...

* b4-shazam-merge:
RISC-V: always report presence of extensions formerly part of the base ISA
dt-bindings: riscv: explicitly mention assumption of Zicntr & Zihpm support
RISC-V: remove decrement/increment dance in ISA string parser
RISC-V: rework comments in ISA string parser
RISC-V: validate riscv,isa at boot, not during ISA string parsing
RISC-V: split early & late of_node to hartid mapping
RISC-V: simplify register width check in ISA string parsing

Link: https://lore.kernel.org/r/20230607-audacity-overhaul-82bb867a825f@spud
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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dt-bindings: riscv: cpus: switch to unevaluatedProperties: false

To permit validation of cpu nodes, swap "additionalProperties: true"
out for "unevaluatedProperties: false".

Signed-off-by: Conor Do

dt-bindings: riscv: cpus: switch to unevaluatedProperties: false

To permit validation of cpu nodes, swap "additionalProperties: true"
out for "unevaluatedProperties: false".

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/r/20230615-viper-stoic-1ff8efd7d51d@spud
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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dt-bindings: riscv: cpus: add a ref the common cpu schema

To permit validation of RISC-V cpu nodes, "additionalProperties: true"
needs to be swapped for "unevaluatedProperties: false". To facilitate

dt-bindings: riscv: cpus: add a ref the common cpu schema

To permit validation of RISC-V cpu nodes, "additionalProperties: true"
needs to be swapped for "unevaluatedProperties: false". To facilitate
this in a way that passes dt_binding_check, a reference to the cpu
schema is required.

Disallow the generic cache-op-block-size property that that drags in,
since the RISC-V CBO extensions do not require a common size, and have
individual properties.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/r/20230615-dubiously-parasail-79d34cefedce@spud
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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dt-bindings: riscv: explicitly mention assumption of Zicntr & Zihpm support

Similar to commit 41ebfc91f785 ("dt-bindings: riscv: explicitly mention
assumption of Zicsr & Zifencei support"), the Zicn

dt-bindings: riscv: explicitly mention assumption of Zicntr & Zihpm support

Similar to commit 41ebfc91f785 ("dt-bindings: riscv: explicitly mention
assumption of Zicsr & Zifencei support"), the Zicntr and Zihpm
extensions also used to be part of the base ISA but were removed after
the bindings were merged. Document the assumption of their presence in
the base ISA.

Suggested-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230607-rerun-retinal-5e8ba89e98f1@spud
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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dt-bindings: riscv: cpus: drop unneeded quotes

Cleanup bindings dropping unneeded quotes. Once all these are fixed,
checking for this can be enabled in yamllint.

Signed-off-by: Krzysztof Kozlowski

dt-bindings: riscv: cpus: drop unneeded quotes

Cleanup bindings dropping unneeded quotes. Once all these are fixed,
checking for this can be enabled in yamllint.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/r/20230609140706.64623-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Merge drm/drm-next into drm-misc-next-fixes

Backmerging to sync drm-misc-next-fixes with drm-misc-next.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'drm-next' of git://anongit.freedesktop.org/drm/drm into msm-next-lumag-base

Merge the drm-next tree to pick up the DRM DSC helpers (merged via
drm-intel-next tree). MSM DSC v1.2 patche

Merge branch 'drm-next' of git://anongit.freedesktop.org/drm/drm into msm-next-lumag-base

Merge the drm-next tree to pick up the DRM DSC helpers (merged via
drm-intel-next tree). MSM DSC v1.2 patches depend on these helpers.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

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Merge patch series "riscv: allow case-insensitive ISA string parsing"

Yangyu Chen <cyy@cyyself.name> says:

This patchset allows case-insensitive ISA string parsing, which is
needed in the ACPI envi

Merge patch series "riscv: allow case-insensitive ISA string parsing"

Yangyu Chen <cyy@cyyself.name> says:

This patchset allows case-insensitive ISA string parsing, which is
needed in the ACPI environment. As the RISC-V Hart Capabilities Table
(RHCT) description in UEFI Forum ECR[1] shows the format of the ISA
string is defined in the RISC-V unprivileged specification[2]. However,
the RISC-V unprivileged specification defines the ISA naming strings are
case-insensitive while the current ISA string parser in the kernel only
accepts lowercase letters. In this case, the kernel should allow
case-insensitive ISA string parsing. Moreover, this reason has been
discussed in Conor's patch[3]. And I have also checked the current ISA
string parsing in the recent ACPI support patch[4] will also call
`riscv_fill_hwcap` function as DT we use now.

The original motivation for my patch v1[5] is that some SoC generators
will provide generated DT with illegal ISA string in dt-binding such as
rocket-chip, which will even cause kernel panic in some cases as I
mentioned in v1[5]. Now, the rocket-chip has been fixed in PR #3333[6].
However, when using some specific version of rocket-chip with
illegal ISA string in DT, this patchset will also work for parsing
uppercase letters correctly in DT, thus will have better compatibility.

In summary, this patch not only works for case-insensitive ISA string
parsing to meet the requirements in ECR[1] but also can be a workaround
for some specific versions of rocket-chip.

* b4-shazam-merge:
dt-bindings: riscv: drop invalid comment about riscv,isa lower-case reasoning
riscv: allow case-insensitive ISA string parsing

Link: https://lore.kernel.org/r/tencent_E6911C8D71F5624E432A1AFDF86804C3B509@qq.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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dt-bindings: riscv: drop invalid comment about riscv,isa lower-case reasoning

"Ease of parsing" may have been the initial argument for keeping this
string in lower-case, but parsers may have been wr

dt-bindings: riscv: drop invalid comment about riscv,isa lower-case reasoning

"Ease of parsing" may have been the initial argument for keeping this
string in lower-case, but parsers may have been written that expect
lower-case only.
For example, the one in released kernels currently does not behave
correctly for multi-letter extensions that begin with a capital letter.
Allowing upper-case here brings about no benefit but would break
compatibility between new devicetrees and older kernels.

Drop the comment to avoid confusing people.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Yangyu Chen <cyy@cyyself.name>
Link: https://lore.kernel.org/r/tencent_3B8290DDC66D3E624132ED39C7465CDC9807@qq.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

show more ...