fix(st-clock): prevent panic when external oscillator is absent

To deactivate the external oscillator, the frequency must be set to 0
in the device tree.
The frequency check for 0 was implemented in

fix(st-clock): prevent panic when external oscillator is absent

To deactivate the external oscillator, the frequency must be set to 0
in the device tree.
The frequency check for 0 was implemented in clk_stm32_osc_gate_enable()
and clk_stm32_osc_gate_disable(), but missing in
clk_stm32_osc_gate_is_enabled().
Since clk_stm32_osc_gate_is_enabled() is called by clk_enable()
to verify if the clock is actually enabled, this fix prevents a panic
when the oscillator is not present.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Change-Id: I90dc671f39bd46d0db19d7532aee9ec7b449ba9d

show more ...

feat(st-clock): rename RCC_USBTCCFGR register into RCC_UCPDCFGR

Rename this register to be aligned with the reference manual.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Change

feat(st-clock): rename RCC_USBTCCFGR register into RCC_UCPDCFGR

Rename this register to be aligned with the reference manual.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Change-Id: Ia10c287bf4068742a7add9016c1a87e300eebff0

show more ...

fix(st-clock): force ARM_DIVSEL for flexgen63 config at 400MHz

The clkext2f frequency at 400MHZ, the default flexgen63 config,
is not supported without a divider by 2 as described in reference Manue

fix(st-clock): force ARM_DIVSEL for flexgen63 config at 400MHz

The clkext2f frequency at 400MHZ, the default flexgen63 config,
is not supported without a divider by 2 as described in reference Manuel,
chapter 3.3 Cortex-A35 clocking:

The clock for the Cortex-A35 subsystem can be selected among:
a clock from the device clock generator (aka ck_cpu1_ext2f). The maximum
frequency on this clock is 400 MHz with a divider by two, enabled thanks
to the CA35SS_SSC_CHGCLKREQ SSC register.

In OpenSTLinux clock tree you assume flexgen63 = 400MHz,
so we force divider by 2 for ck_cpu1_ext2f clock, the CA35 bypass clock
with ARM_DIVSEL = 0.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: I9d11f9316ce3a2c7280a9bb7652d241b164ce5a1

show more ...

fix(st-clock): add ck_bus_risaf4 clock for STM32MP2

Add management of the ck_bus_risaf4 clock.
The RISAF4 clock is missing, which causes a panic if it is enabled.
The DDR clock is set to critical as

fix(st-clock): add ck_bus_risaf4 clock for STM32MP2

Add management of the ck_bus_risaf4 clock.
The RISAF4 clock is missing, which causes a panic if it is enabled.
The DDR clock is set to critical as it is mandatory to keep the DDR
clock active.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Change-Id: I6ac2aff07484bfc22210ee9d3e46a97d1735f34b

show more ...

feat(st-clock): add STM32MP21 and STM32MP23 RCC variants

Add specific configurations in clock driver for STM32MP21 and STM32MP23
SoCs.
All changes have been merged in stm32mp2_clk.c file using STM32

feat(st-clock): add STM32MP21 and STM32MP23 RCC variants

Add specific configurations in clock driver for STM32MP21 and STM32MP23
SoCs.
All changes have been merged in stm32mp2_clk.c file using STM32MP21,
STM32MP23 and STM32MP25 flags.
STM32MP23 will use the same RCC clock compatible of STM32MP25 SoC.

Change-Id: I6422cd0553067dc92f80da1ad8ec78cadf2432bb
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@foss.st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>

show more ...

feat(st-clock): add STM32MP2 clock driver

This driver manages the clocks on STM32MP2 platforms.
It uses a dedicated RCC (Reset and Clock Control) peripheral.

Change-Id: I6ba2173e73222269a2dfca4c689

feat(st-clock): add STM32MP2 clock driver

This driver manages the clocks on STM32MP2 platforms.
It uses a dedicated RCC (Reset and Clock Control) peripheral.

Change-Id: I6ba2173e73222269a2dfca4c6897229276a150c0
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>

show more ...

feat(st-clock): use early traces

Replace trace macros with their corresponding EARLY_* macros.

Change-Id: I39b163964fa3129be38e58352b5dee9b4081675b
Signed-off-by: Yann Gautier <yann.gautier@foss.st

feat(st-clock): use early traces

Replace trace macros with their corresponding EARLY_* macros.

Change-Id: I39b163964fa3129be38e58352b5dee9b4081675b
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>

show more ...

fix(st-clock): adapt order of CSS on LSE and HSE

Fix the activation order of the CSS to prevent a faulty halt, according
to the reference manual (RM0442 Rev 6, Chapter: 10.4.3 Clock security
system

fix(st-clock): adapt order of CSS on LSE and HSE

Fix the activation order of the CSS to prevent a faulty halt, according
to the reference manual (RM0442 Rev 6, Chapter: 10.4.3 Clock security
system CSS) it must be done after selecting the LSE clock via the RTCSRC
field.
For the HSE clock, this can be activated even when HSEON is '0'.

Signed-off-by: Christoph Fritz <chf@fritzc.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Change-Id: Ied01baac1ccc63dcef78bf5f9180bb8628cce2d0

show more ...

refactor(st-clock): remove unused struct

The struct clk_fixed_rate is used nowhere in the code, remove its
definition.

Change-Id: I139ad05a249357da96a996feabd4b1f53e290f2a
Signed-off-by: Yann Gauti

refactor(st-clock): remove unused struct

The struct clk_fixed_rate is used nowhere in the code, remove its
definition.

Change-Id: I139ad05a249357da96a996feabd4b1f53e290f2a
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>

show more ...

refactor(st-clock): move stm32mp1_clk_rcc_regs_*lock

Those functions are only used on MP1, they should not be in STM32 clock
core. Move them to MP13 driver (they are already in MP15 driver).
Redefin

refactor(st-clock): move stm32mp1_clk_rcc_regs_*lock

Those functions are only used on MP1, they should not be in STM32 clock
core. Move them to MP13 driver (they are already in MP15 driver).
Redefine new clk_stm32_rcc_regs_*lock() functions in clock core. This
change avoid sparse warning:
drivers/st/clk/clk-stm32-core.c:46:6: warning: symbol
'stm32mp1_clk_rcc_regs_lock' was not declared. Should it be static?
drivers/st/clk/clk-stm32-core.c:51:6: warning: symbol
'stm32mp1_clk_rcc_regs_unlock' was not declared. Should it be static?

Change-Id: I9f255acaa843e41fc14267c1a8091f93bd029796
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>

show more ...

refactor(st-clock): driver size optimization

Re-ordering structures to avoid gaps and minimize data.
Reduce type of gate_refcounts[], uint8_t is enough.
Re-ordering structures to avoid gaps and mini

refactor(st-clock): driver size optimization

Re-ordering structures to avoid gaps and minimize data.
Reduce type of gate_refcounts[], uint8_t is enough.
Re-ordering structures to avoid gaps and minimize data.
Use an unsigned char to define a clock ops type.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Change-Id: I6b793dc34abdd6ef013609fc0f122da5d1824a34

show more ...

refactor(st-clock): remove BL32 support on STM32MP13

TF-A BL32 (SP_MIN) is not supported on STM32MP13. Only OP-TEE is used
as BL32. Remove the code under IMAGE_BL32 flag in STM32MP13 driver.

Signed

refactor(st-clock): remove BL32 support on STM32MP13

TF-A BL32 (SP_MIN) is not supported on STM32MP13. Only OP-TEE is used
as BL32. Remove the code under IMAGE_BL32 flag in STM32MP13 driver.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I6cc9f230782c44129b205e66a44cdb4bcb5f95c3

show more ...

feat(st-clock): don't gate/ungate an oscillator if it is not wired

If the oscillator is not present, the gating will fail.

Change-Id: If9119460a4bcd42053537f1975afe5fe1df05752
Signed-off-by: Gabrie

feat(st-clock): don't gate/ungate an oscillator if it is not wired

If the oscillator is not present, the gating will fail.

Change-Id: If9119460a4bcd42053537f1975afe5fe1df05752
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>

show more ...

feat(st-clock): update with new bindings

Code alignment with MP13 driver.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Change-Id: Ifb0597721a865f463cf41c5cd7be3ca75a1da80c

feat(stm32mp1): always boot at 650MHz

Switching to higher CPU frequencies requires a dedicated chip version
(STM32MP1xxD or STM32MP1xxF), and increase CPU voltage. To avoid
re-configuring I2C and PM

feat(stm32mp1): always boot at 650MHz

Switching to higher CPU frequencies requires a dedicated chip version
(STM32MP1xxD or STM32MP1xxF), and increase CPU voltage. To avoid
re-configuring I2C and PMIC before and after applying clock tree,
always boot at 650MHz, which is the frequency for nominal voltage.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: Id05a3ee17e7dd57e2d64dc06f8f1e7f9cb21e110

show more ...

refactor(st-clock): remove LSEDRV_MEDIUM_HIGH for STM32MP13

Remove useless LSEDRV_MEDIUM_HIGH definition in clk-stm32mp13.c.
It's already defined in include/dt-bindings/clock/stm32mp13-clksrc.h.

Si

refactor(st-clock): remove LSEDRV_MEDIUM_HIGH for STM32MP13

Remove useless LSEDRV_MEDIUM_HIGH definition in clk-stm32mp13.c.
It's already defined in include/dt-bindings/clock/stm32mp13-clksrc.h.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Change-Id: Ie3fa4711930f922fa0733ba7c76d72ec9639e9a5

show more ...

fix(st-clock): display proper PLL number for STM32MP13

The PLL clk_id does not start at 0, but it is in the enum listing all
clocks. To have a better display of the PLL number, start at PLL1,
by cha

fix(st-clock): display proper PLL number for STM32MP13

The PLL clk_id does not start at 0, but it is in the enum listing all
clocks. To have a better display of the PLL number, start at PLL1,
by changing pll->clk_id in messages with pll->clk_id - _CK_PLL1 + 1.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: Ic09195ae6fe5f8d3a87e69962425f7c826f3670b

show more ...

fix(st-clock): do not reconfigure LSE

If LSE oscillator is already ON, which is the case when returning from
low-power state or if we are on VBAT, it mustn't be reconfigured.

Signed-off-by: Yann Ga

fix(st-clock): do not reconfigure LSE

If LSE oscillator is already ON, which is the case when returning from
low-power state or if we are on VBAT, it mustn't be reconfigured.

Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: Ie75f2b0b42aeb3d95e2266e1fca811a2f2b3e29f

show more ...

refactor(st-clock): remove unused clk function in API

Remove the unused functions in stm32mp clk API:
- stm32mp_stgen_get_counter (change to static, no more exported)
- stm32mp_stgen_restore_counter

refactor(st-clock): remove unused clk function in API

Remove the unused functions in stm32mp clk API:
- stm32mp_stgen_get_counter (change to static, no more exported)
- stm32mp_stgen_restore_counter

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: Ib6ca72723eac3e133f1ca0dee504ef344c72e0bf

show more ...

refactor(st-clock): support deactivated STGEN in stm32mp_stgen_config

Update function stm32mp_stgen_config() to support deactivated STGEN
when frequency is 0, for example on STOP2 exit for STM32MP25

refactor(st-clock): support deactivated STGEN in stm32mp_stgen_config

Update function stm32mp_stgen_config() to support deactivated STGEN
when frequency is 0, for example on STOP2 exit for STM32MP25.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: Id371c4602a614bbfa0ecc7ce2d2e0ac5261e1d52

show more ...

feat(st-clock): add function to restore generic timer rate

Add a function to restore the CPU generic timer rate from STGEN content.
After wake-up from LPLV-Stop2, STGEN content is not lost, but gene

feat(st-clock): add function to restore generic timer rate

Add a function to restore the CPU generic timer rate from STGEN content.
After wake-up from LPLV-Stop2, STGEN content is not lost, but generic timer
has been reset.

Signed-off-by: Pascal Paillet <p.paillet@st.com>
Change-Id: I6f91dbd051f76383e9ff1d6bb86225d373dbf33a

show more ...

feat(st-clock): add function to control MCU subsystem

Add a new function to control the MCU subsystem
security state.

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Change-Id: I070eec06fc93a

feat(st-clock): add function to control MCU subsystem

Add a new function to control the MCU subsystem
security state.

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Change-Id: I070eec06fc93a1214227f25a6a4f1c40c66c86b0

show more ...