linux-stable.git/drivers/clocksource/Kconfig, branch linux-5.10.y

clocksource/drivers/timer-integrator-ap: Add missing Kconfig dependency on OF

2026-03-04T12:19:55+00:00

[ Upstream commit 2246464821e2820572e6feefca2029f17629cc50 ]

This driver accesses the of_aliases global variable declared in
linux/of.h and defined in drivers/base/of.c. It requires OF support or
will cause a link failure. Add the missing Kconfig dependency.

Closes: https://lore.kernel.org/oe-kbuild-all/202601152233.og6LdeUo-lkp@intel.com/
Signed-off-by: Bartosz Golaszewski 
Signed-off-by: Daniel Lezcano 
Link: https://patch.msgid.link/20260116111723.10585-1-bartosz.golaszewski@oss.qualcomm.com
Signed-off-by: Sasha Levin

Revert "clkdev: remove CONFIG_CLKDEV_LOOKUP"

2024-12-19T17:06:12+00:00

This reverts commit d08932bb6e38 which is
commit 2f4574dd6dd19eb3e8ab0415a3ae960d04be3a65 upstream.

It is reported to cause build errors in m68k, so revert it.

Link: https://lore.kernel.org/r/68b0559e-47e8-4756-b3de-67d59242756e@roeck-us.net
Reported-by: Guenter Roeck 
Cc: Arnd Bergmann 
Cc: Ross Burton 
Cc: Sudeep Holla 
Cc: Mark Rutland 
Cc: Mark Brown 
Cc: Daniel Lezcano 
Cc: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

Revert "clocksource/drivers:sp804: Make user selectable"

2024-12-19T17:06:12+00:00

This reverts commit ef1db3d1d2bf which is
commit 0309f714a0908e947af1c902cf6a330cb593e75e upstream.

It is reported to cause build errors in m68k, so revert it.

Link: https://lore.kernel.org/r/68b0559e-47e8-4756-b3de-67d59242756e@roeck-us.net
Reported-by: Guenter Roeck 
Cc: Ross Burton 
Cc: Sudeep Holla 
Cc: Mark Rutland 
Cc: Mark Brown 
Cc: Daniel Lezcano 
Cc: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

clocksource/drivers:sp804: Make user selectable

2024-12-14T18:47:46+00:00

[ Upstream commit 0309f714a0908e947af1c902cf6a330cb593e75e ]

The sp804 is currently only user selectable if COMPILE_TEST, this was
done by commit dfc82faad725 ("clocksource/drivers/sp804: Add
COMPILE_TEST to CONFIG_ARM_TIMER_SP804") in order to avoid it being
spuriously offered on platforms that won't have the hardware since it's
generally only seen on Arm based platforms.  This config is overly
restrictive, while platforms that rely on the SP804 do select it in
their Kconfig there are others such as the Arm fast models which have a
SP804 available but currently unused by Linux.  Relax the dependency to
allow it to be user selectable on arm and arm64 to avoid surprises and
in case someone comes up with a use for extra timer hardware.

Fixes: dfc82faad725 ("clocksource/drivers/sp804: Add COMPILE_TEST to CONFIG_ARM_TIMER_SP804")
Reported-by: Ross Burton 
Reviewed-by: Sudeep Holla 
Acked-by: Mark Rutland 
Signed-off-by: Mark Brown 
Link: https://lore.kernel.org/r/20241001-arm64-vexpress-sp804-v3-1-0a2d3f7883e4@kernel.org
Signed-off-by: Daniel Lezcano 
Signed-off-by: Sasha Levin

clkdev: remove CONFIG_CLKDEV_LOOKUP

2024-12-14T18:47:46+00:00

[ Upstream commit 2f4574dd6dd19eb3e8ab0415a3ae960d04be3a65 ]

This option is now synonymous with CONFIG_HAVE_CLK, so use
the latter globally. Any out-of-tree platform ports that
still use a private clk_get()/clk_put() implementation should
move to CONFIG_COMMON_CLK.

Signed-off-by: Arnd Bergmann 
Stable-dep-of: 0309f714a090 ("clocksource/drivers:sp804: Make user selectable")
Signed-off-by: Sasha Levin

clocksource/drivers/timer-ti-dm: Select TIMER_OF

2021-11-18T13:04:09+00:00

[ Upstream commit eda9a4f7af6ee47e9e131f20e4f8a41a97379293 ]

When building OMAP_DM_TIMER without TIMER_OF, there are orphan sections
due to the use of TIMER_OF_DELCARE() without CONFIG_TIMER_OF. Select
CONFIG_TIMER_OF when enaling OMAP_DM_TIMER:

arm-linux-gnueabi-ld: warning: orphan section `__timer_of_table' from `drivers/clocksource/timer-ti-dm-systimer.o' being placed in section `__timer_of_table'

Reported-by: kernel test robot 
Link: https://lore.kernel.org/lkml/202108282255.tkdt4ani-lkp@intel.com/
Cc: Tony Lindgren 
Cc: Daniel Lezcano 
Cc: Keerthy 
Cc: Sebastian Reichel 
Cc: Ladislav Michl 
Cc: Grygorii Strashko 
Cc: linux-omap@vger.kernel.org
Fixes: 52762fbd1c47 ("clocksource/drivers/timer-ti-dm: Add clockevent and clocksource support")
Signed-off-by: Kees Cook 
Acked-by: Tony Lindgren 
Link: https://lore.kernel.org/r/20210828175747.3777891-1-keescook@chromium.org
Signed-off-by: Daniel Lezcano 
Signed-off-by: Sasha Levin

clocksource/drivers/ixp4xx: Select TIMER_OF when needed

2021-03-04T10:37:57+00:00

[ Upstream commit 7a3b8758bd6e45f7b671723b5c9fa2b69d0787ae ]

Compile-testing the ixp4xx timer with CONFIG_OF enabled but
CONFIG_TIMER_OF disabled leads to a harmless warning:

arm-linux-gnueabi-ld: warning: orphan section `__timer_of_table' from `drivers/clocksource/timer-ixp4xx.o' being placed in section `__timer_of_table'

Move the select statement from the platform code into the driver
so it always gets enabled in configurations that rely on it.

Fixes: 40df14cc5cc0 ("clocksource/drivers/ixp4xx: Add OF initialization support")
Signed-off-by: Arnd Bergmann 
Reviewed-by: Linus Walleij 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20210103135955.3808976-1-arnd@kernel.org
Signed-off-by: Sasha Levin

clocksource/drivers/riscv: Make RISCV_TIMER depends on RISCV_SBI

2020-12-30T10:53:33+00:00

[ Upstream commit ab3105446f1ec4e98fadfc998ee24feec271c16c ]

The riscv timer is set via SBI timer call, let's make RISCV_TIMER
depends on RISCV_SBI, and it also fixes some build issue.

Fixes: d5be89a8d118 ("RISC-V: Resurrect the MMIO timer implementation for M-mode systems")
Signed-off-by: Kefeng Wang 
Reviewed-by: Palmer Dabbelt 
Acked-by: Palmer Dabbelt 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20201028131230.72907-1-wangkefeng.wang@huawei.com
Signed-off-by: Sasha Levin

RISC-V: Remove CLINT related code from timer and arch

2020-08-20T17:58:13+00:00

Right now the RISC-V timer driver is convoluted to support:
1. Linux RISC-V S-mode (with MMU) where it will use TIME CSR for
   clocksource and SBI timer calls for clockevent device.
2. Linux RISC-V M-mode (without MMU) where it will use CLINT MMIO
   counter register for clocksource and CLINT MMIO compare register
   for clockevent device.

We now have a separate CLINT timer driver which also provide CLINT
based IPI operations so let's remove CLINT MMIO related code from
arch/riscv directory and RISC-V timer driver.

Signed-off-by: Anup Patel 
Tested-by: Emil Renner Berhing 
Acked-by: Daniel Lezcano 
Reviewed-by: Atish Patra 
Reviewed-by: Palmer Dabbelt 
Signed-off-by: Palmer Dabbelt

clocksource/drivers: Add CLINT timer driver

2020-08-20T17:57:29+00:00

We add a separate CLINT timer driver for Linux RISC-V M-mode (i.e.
RISC-V NoMMU kernel).

The CLINT MMIO device provides three things:
1. 64bit free running counter register
2. 64bit per-CPU time compare registers
3. 32bit per-CPU inter-processor interrupt registers

Unlike other timer devices, CLINT provides IPI registers along with
timer registers. To use CLINT IPI registers, the CLINT timer driver
provides IPI related callbacks to arch/riscv.

Signed-off-by: Anup Patel 
Tested-by: Emil Renner Berhing 
Acked-by: Daniel Lezcano 
Reviewed-by: Atish Patra 
Reviewed-by: Palmer Dabbelt 
Signed-off-by: Palmer Dabbelt