linux.git/drivers/clk/bcm, branch v6.16

clk: bcm: rpi: Add NULL check in raspberrypi_clk_register()

2025-05-06T21:41:55+00:00

devm_kasprintf() returns NULL when memory allocation fails. Currently,
raspberrypi_clk_register() does not check for this case, which results
in a NULL pointer dereference.

Add NULL check after devm_kasprintf() to prevent this issue.

Fixes: 93d2725affd6 ("clk: bcm: rpi: Discover the firmware clocks")
Signed-off-by: Henry Martin 
Reviewed-by: Dave Stevenson 
Link: https://lore.kernel.org/r/20250402020513.42628-1-bsdhenrymartin@gmail.com
Reviewed-by: Stefan Wahren 
Signed-off-by: Stephen Boyd

clk: bcm: rpi: Drop module alias

2025-05-06T21:40:56+00:00

Since commit fbac2e7787ac ("clk: bcm: rpi: Allow the driver to
be probed by DT") the module alias isn't necessary anymore. So
we can drop it.

Signed-off-by: Stefan Wahren 
Link: https://lore.kernel.org/r/20250415185614.16292-1-wahrenst@gmx.net
Reviewed-by: Florian Fainelli 
Signed-off-by: Stephen Boyd

clk: bcm: kona: Remove unused scaled_div_build

2025-05-06T21:35:50+00:00

scaled_div_build() was added in 2014 by
commit 1f27f15258bf ("clk: bcm281xx: add initial clock framework support")
but hasn't been used.

Remove it.

Signed-off-by: Dr. David Alan Gilbert 
Link: https://lore.kernel.org/r/20250505013545.359745-1-linux@treblig.org
Signed-off-by: Stephen Boyd

Merge branches 'clk-airoha', 'clk-rockchip', 'clk-stm', 'clk-thead' and 'clk-bcm' into clk-next

2025-01-21T19:22:26+00:00

* clk-airoha:
  clk: en7523: Add clock for eMMC for EN7581
  dt-bindings: clock: add ID for eMMC for EN7581
  dt-bindings: clock: drop NUM_CLOCKS define for EN7581
  clk: en7523: Rework clock handling for different clock numbers
  clk: en7523: Initialize num before accessing hws in en7523_register_clocks()
  clk: en7523: Fix wrong BUS clock for EN7581
  clk: amlogic: axg-audio: revert reset implementation
  Revert "clk: Fix invalid execution of clk_set_rate"

* clk-rockchip:
  clk: rockchip: rk3588: make refclko25m_ethX critical
  clk: rockchip: rk3588: drop RK3588_LINKED_CLK
  clk: rockchip: implement linked gate clock support
  clk: rockchip: expose rockchip_clk_set_lookup
  clk: rockchip: rk3588: register GATE_LINK later
  clk: rockchip: support clocks registered late

* clk-stm:
  clk: stm32f4: support spread spectrum clock generation
  clk: stm32f4: use FIELD helpers to access the PLLCFGR fields
  dt-bindings: clock: st,stm32-rcc: support spread spectrum clocking
  dt-bindings: clock: convert stm32 rcc bindings to json-schema

* clk-thead:
  clk: thead: Fix cpu2vp_clk for TH1520 AP_SUBSYS clocks
  clk: thead: Add CLK_IGNORE_UNUSED to fix TH1520 boot
  clk: thead: Fix clk gate registration to pass flags

* clk-bcm:
  clk: bcm: rpi: Add disp clock
  clk: bcm: rpi: Create helper to retrieve private data
  clk: bcm: rpi: Enable minimize for all firmware clocks
  clk: bcm: rpi: Allow cpufreq driver to also adjust gpu clocks
  clk: bcm: rpi: Add ISP to exported clocks

clk: bcm: rpi: Add disp clock

2025-01-16T21:27:12+00:00

BCM2712 has an extra clock exposed by the firmware called DISP, and used
by (at least) the HVS. Let's add it to the list of clocks to register in
Linux.

Acked-by: Stephen Boyd 
Signed-off-by: Maxime Ripard 
Signed-off-by: Dave Stevenson 
Link: https://lore.kernel.org/r/20250116-bcm2712-clk-updates-v1-5-10bc92ffbf41@raspberrypi.com
Reviewed-by: Florian Fainelli 
Signed-off-by: Stephen Boyd

clk: bcm: rpi: Create helper to retrieve private data

2025-01-16T21:27:12+00:00

The RaspberryPi firmware clocks driver uses in several instances a
container_of to retrieve the struct raspberrypi_clk_data from a pointer
to struct clk_hw. Let's create a small function to avoid duplicating it
all over the place.

Acked-by: Stephen Boyd 
Signed-off-by: Maxime Ripard 
Signed-off-by: Dave Stevenson 
Link: https://lore.kernel.org/r/20250116-bcm2712-clk-updates-v1-4-10bc92ffbf41@raspberrypi.com
Reviewed-by: Florian Fainelli 
Signed-off-by: Stephen Boyd

clk: bcm: rpi: Enable minimize for all firmware clocks

2025-01-16T21:27:11+00:00

There isn't a reason not to minimise the clocks, and it saves
some power.

Acked-by: Stephen Boyd 
Signed-off-by: Dom Cobley 
Signed-off-by: Dave Stevenson 
Link: https://lore.kernel.org/r/20250116-bcm2712-clk-updates-v1-3-10bc92ffbf41@raspberrypi.com
Reviewed-by: Florian Fainelli 
Signed-off-by: Stephen Boyd

clk: bcm: rpi: Allow cpufreq driver to also adjust gpu clocks

2025-01-16T21:27:11+00:00

For performance/power it is beneficial to adjust gpu clocks with arm clock.
This is how the downstream cpufreq driver works

Acked-by: Stephen Boyd 
Signed-off-by: Dom Cobley 
Signed-off-by: Dave Stevenson 
Link: https://lore.kernel.org/r/20250116-bcm2712-clk-updates-v1-2-10bc92ffbf41@raspberrypi.com
Reviewed-by: Florian Fainelli 
Signed-off-by: Stephen Boyd

clk: bcm: rpi: Add ISP to exported clocks

2025-01-16T21:27:11+00:00

The ISP clock can be controlled by the driver, so register it
with the clock subsystem.

Acked-by: Stephen Boyd 
Signed-off-by: Dom Cobley 
Signed-off-by: Dave Stevenson 
Link: https://lore.kernel.org/r/20250116-bcm2712-clk-updates-v1-1-10bc92ffbf41@raspberrypi.com
Reviewed-by: Florian Fainelli 
Signed-off-by: Stephen Boyd

clk: Use str_enable_disable-like helpers

2025-01-15T20:27:04+00:00

Replace ternary (condition ? "enable" : "disable") syntax with helpers
from string_choices.h because:
1. Simple function call with one argument is easier to read.  Ternary
   operator has three arguments and with wrapping might lead to quite
   long code.
2. Is slightly shorter thus also easier to read.
3. It brings uniformity in the text - same string.
4. Allows deduping by the linker, which results in a smaller binary
   file.

Reviewed-by: Florian Fainelli 
Signed-off-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/20250114190612.846696-1-krzysztof.kozlowski@linaro.org
Reviewed-by: Linus Walleij 
Signed-off-by: Stephen Boyd