kernel/linux.git/drivers/reset/reset-mpfs.c, branch v6.19.12

reset: mpfs: add non-auxiliary bus probing

2025-11-11T16:47:24+00:00

While the auxiliary bus was a nice bandaid, and meant that re-writing the representation of the clock regions in devicetree was not required, it has run its course. The "mss_top_sysreg" region that contains the clock and reset regions, also contains pinctrl and an interrupt controller, so the time has come rewrite the devicetree and probe the reset controller from an mfd devicetree node, rather than implement those drivers using the auxiliary bus. Wanting to avoid propagating this naive/incorrect description of the hardware to the new pic64gx SoC is a major motivating factor here. Reviewed-by: Philipp Zabel Acked-by: Philipp Zabel Signed-off-by: Conor Dooley

reset: mpfs: use the auxiliary device creation

2025-06-27T16:15:35+00:00

The auxiliary device creation of this driver is simple enough to use the available auxiliary device creation helper. Use it and remove some boilerplate code. Acked-by: Conor Dooley Reviewed-by: Philipp Zabel Signed-off-by: Jerome Brunet Link: https://lore.kernel.org/r/20250611-rst-mpfs-aux-v1-1-c86534b473c3@baylibre.com Signed-off-by: Philipp Zabel

module: Convert symbol namespace to string literal

2024-12-02T19:34:44+00:00

Clean up the existing export namespace code along the same lines of commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")") and for the same reason, it is not desired for the namespace argument to be a macro expansion itself. Scripted using git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file; do awk -i inplace ' /^#define EXPORT_SYMBOL_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /^#define MODULE_IMPORT_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /MODULE_IMPORT_NS/ { $0 = gensub(/MODULE_IMPORT_NS$([^)]*)$/, "MODULE_IMPORT_NS(\"\\1\")", "g"); } /EXPORT_SYMBOL_NS/ { if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)$([^,]+),/) { if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)$/ && $0 !~ /(EXPORT_SYMBOL_NS[^(]*)/ && $0 !~ /^my/) { getline line; gsub(/[[:space:]]*\\$/, ""); gsub(/[[:space:]]/, "", line); $0 = $0 " " line; } $0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)$([^,]+), ([^)]+)$/, "\\1(\\2, \"\\3\")", "g"); } } { print }' $file; done Requested-by: Masahiro Yamada Signed-off-by: Peter Zijlstra (Intel) Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc Acked-by: Greg KH Signed-off-by: Linus Torvalds

clock, reset: microchip: move all mpfs reset code to the reset subsystem

2024-05-07T21:57:46+00:00

Stephen and Philipp, while reviewing patches, said that all of the aux device creation and the register read/write code could be moved to the reset subsystem, leaving the clock driver with no implementations of reset_* functions at all. Move them. Suggested-by: Philipp Zabel Suggested-by: Stephen Boyd Signed-off-by: Conor Dooley Link: https://lore.kernel.org/r/20240424-strangle-sharpener-34755c5e6e3e@spud Signed-off-by: Stephen Boyd

reset: Explicitly include correct DT includes

2023-07-28T15:36:20+00:00

The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring Reviewed-by: Damien Le Moal Acked-by: Steen Hegelund Link: https://lore.kernel.org/r/20230714174939.4063667-1-robh@kernel.org Signed-off-by: Philipp Zabel

reset: mpfs: remove MODULE_LICENSE in non-modules

2023-04-13T20:13:53+00:00

Since commit 8b41fc4454e ("kbuild: create modules.builtin without Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations are used to identify modules. As a consequence, uses of the macro in non-modules will cause modprobe to misidentify their containing object file as a module when it is not (false positives), and modprobe might succeed rather than failing with a suitable error message. So remove it in the files in this commit, none of which can be built as modules. Signed-off-by: Nick Alcock Suggested-by: Luis Chamberlain Reviewed-by: Conor Dooley Cc: Luis Chamberlain Cc: linux-modules@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Hitomi Hasegawa Cc: Conor Dooley Cc: Daire McNamara Cc: Philipp Zabel Cc: linux-riscv@lists.infradead.org Signed-off-by: Luis Chamberlain

reset: add polarfire soc reset support

2022-09-14T07:55:17+00:00

Add support for the resets on Microchip's PolarFire SoC (MPFS). Reset control is a single register, wedged in between registers for clock control. To fit with existed DT etc, the reset controller is created using the aux device framework & set up in the clock driver. Reviewed-by: Philipp Zabel Acked-by: Philipp Zabel Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley Reviewed-by: Claudiu Beznea Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220909123123.2699583-6-conor.dooley@microchip.com