dts: stm32: remove activation of RTC nodes at board level

Remove unnecessary activation of RTC in stm32mp15xxdkx.dtsi and
stm32mp135f-dk.dts.
RTC node is default enabled in stm32mp131.dtsi and stm32

dts: stm32: remove activation of RTC nodes at board level

Remove unnecessary activation of RTC in stm32mp15xxdkx.dtsi and
stm32mp135f-dk.dts.
RTC node is default enabled in stm32mp131.dtsi and stm32mp151.dtsi.

Signed-off-by: Thomas Bourgoin <thomas.bourgoin@foss.st.com>
Reviewed-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>

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dts: stm32: add passive tamper sampling configuration for stm32mp15xx-dkx

Add a passive tamper sampling configuration for stm32mp15xx-dkx boards.

Signed-off-by: Gatien Chevallier <gatien.chevallier

dts: stm32: add passive tamper sampling configuration for stm32mp15xx-dkx

Add a passive tamper sampling configuration for stm32mp15xx-dkx boards.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>

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dts: stm32: use st,stm32mp15-i2c-non-secure compatible for the I2C4

Use st,stm32mp15-i2c-non-secure compatible for the I2C4 as it is
currently non-secure on stm32mp15 dkx and evx platforms.

Signed-

dts: stm32: use st,stm32mp15-i2c-non-secure compatible for the I2C4

Use st,stm32mp15-i2c-non-secure compatible for the I2C4 as it is
currently non-secure on stm32mp15 dkx and evx platforms.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>

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dts: stm32: disable VREFBUF on stm32mp15-dkx platforms

VREFBUF is currently not used on stm32mp15-dkx platforms,
so disable it.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Revi

dts: stm32: disable VREFBUF on stm32mp15-dkx platforms

VREFBUF is currently not used on stm32mp15-dkx platforms,
so disable it.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>

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dts: add stm32mp15*-scmi.dts files for when RCC is secure

For legacy reason and compatibility with existing platforms embedding
OP-TEE with RCC secure hardening being disabled, introduce -scmi.dts f

dts: add stm32mp15*-scmi.dts files for when RCC is secure

For legacy reason and compatibility with existing platforms embedding
OP-TEE with RCC secure hardening being disabled, introduce -scmi.dts for
the 4 ST boards STM32MP15x: DK1, DK2, ED1 and EV1 where we enable RCC
security require non-secure world to use SCMI resources. Add platform
flavors 157x_XXX_SCMI to ease DTS selection.

stm32mp15*-<board>.dts applies an insecure RCC configuration.
stm32mp15*-<board>-scmi.dts applies the secure RCC configuration.
This better reflects the configurations supported in the Linux kernel
and U-Boot source trees.

Reviewed-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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dts: stm32: update m4_rproc to support the remoteproc OP-TEE framework

Update device tree to support the load of the remoteproc firmware
by OP-TEE.
- declare m_ipc_shm memory region that can contain

dts: stm32: update m4_rproc to support the remoteproc OP-TEE framework

Update device tree to support the load of the remoteproc firmware
by OP-TEE.
- declare m_ipc_shm memory region that can contain the remote processor
resource table and trace buffer,
- update reset to align declaration with the Linux devicetree

To enable the load of the coprocessor firmware by OP-TEE, user have
to update the m4_rproc node compatible property:
-"st,stm32mp1-m4": the load is managed by Linux or U-boot,
-"st,stm32mp1-m4-tee": the load is managed by OP-TEE.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

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dts: stm32mp15: disable non-secure IWDG2 on ST boards

Disable non-secure IWDG2 watchdog device in ST boards stm32mp157a-dk1,
stm32mp157c-dk2, stm32mp157c-ed1 and stm32mp157c-ev1. This watchdog is
fu

dts: stm32mp15: disable non-secure IWDG2 on ST boards

Disable non-secure IWDG2 watchdog device in ST boards stm32mp157a-dk1,
stm32mp157c-dk2, stm32mp157c-ed1 and stm32mp157c-ev1. This watchdog is
fully under control of the non-secure world and OP-TEE is not expected
to interfere with it.

Reviewed-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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dts: stm32mp15: enable secure IWDG1 on ST boards

Enable IWDG1 watchdog device in ST boards stm32mp157a-dk1,
stm32mp157c-dk2, stm32mp157c-ed1 and stm32mp157c-ev1.

Reviewed-by: Gatien Chevallier <gat

dts: stm32mp15: enable secure IWDG1 on ST boards

Enable IWDG1 watchdog device in ST boards stm32mp157a-dk1,
stm32mp157c-dk2, stm32mp157c-ed1 and stm32mp157c-ev1.

Reviewed-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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dts: stm32mp15: harden RCC secure configuration on ST boards

Enable STM32MP15 RCC secure hardening configuration on ST boards
(DK1, DK2, ED1 and EV1) to assign SoC clocks, reset controllers
and PWR

dts: stm32mp15: harden RCC secure configuration on ST boards

Enable STM32MP15 RCC secure hardening configuration on ST boards
(DK1, DK2, ED1 and EV1) to assign SoC clocks, reset controllers
and PWR regulators to OP-TEE secure world.

This change removes setting of &rcc node status property from
stm32mp157a-dk1.dts, stm32mp157c-dk2.dts as the property is
set from stm32mp15xx-dkx.dtsi that is included from the 2 former
DTS files.

Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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dts: stm32mp15: USBPHY regulator is always-on on ST boards

Sets property regulator-always-on on USB-PHY regulator supply for
ST boards DK1/DK2/ED1/EV1.

This fixes an issue in the commit that integr

dts: stm32mp15: USBPHY regulator is always-on on ST boards

Sets property regulator-always-on on USB-PHY regulator supply for
ST boards DK1/DK2/ED1/EV1.

This fixes an issue in the commit that integrated the regulator
framework in stm32mp1 scmi_server. On the mentioned boards, the
PWR USB3.3V regulator, exposed through SCMI to Linux/U-Boot, is
supplied by a PMIC regulator (named vdd_usb). The PMIC is connected
on an I2C bus currently assigned to non-secure world as used by mainline
Linux kernel and U-Boot for these boards. Therefore, OP-TEE can
access the PMIC at boot time to enable that PMIC regulator but not
at runtime as it could conflict with Linux kernel/U-Boot accesses on
that bus. Setting that PMIC regulator always-on on OP-TEE side
prevents OP-TEE from accessing the I2C bus to disable PMIC vdd_usb
regulator at runtime when Linux or U-Boot disable the PWR USB-3.3V
regulator using PWR regulator service exposed through SMCI.

On these boards, Linux and U-Boot are not expected to disable this
PMIC regulator. If so, the effect would be that SCMI requests to
enable to enable PWR USB-3.3V would simply return a failure code
and Linux/U-Boot USB stack to not be functional. OP-TEE core itself
does not use any USB resources on these platforms.

A ideal solution would be to assign that I2C bus to OP-TEE
(harden its secure configuration) but mainline Linux and U-Boot
packages are not yet ready for this due to legacy configuration
of these components for the devices connected on these boards. This
will come once mainline Linux kernel and U-Boot are ready.

Fixes: 23e200628dad ("plat-stm32mp1: scmi_server: use registered regulators")
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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dts: stm32: disable unused nodes in ST stm32mp15 boards DTS files

Disables nodes not consumed by OP-TEE for ST boards based on stm32mp15
devices.

Acked-by: Jerome Forissier <jerome.forissier@linaro

dts: stm32: disable unused nodes in ST stm32mp15 boards DTS files

Disables nodes not consumed by OP-TEE for ST boards based on stm32mp15
devices.

Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>

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dts: stm32mp15: bump to Linux v5.19-rc6 dts files
Synchronize with stm32mp15 dts(i) files from Linux v5.19-rc6.

Changes made to imported dts(i) files:
- stm32mp151.dtsi: add ETZPC node, declare PSCI

dts: stm32mp15: bump to Linux v5.19-rc6 dts files
Synchronize with stm32mp15 dts(i) files from Linux v5.19-rc6.

Changes made to imported dts(i) files:
- stm32mp151.dtsi: add ETZPC node, declare PSCI v1.0.
- stm32mp151.dtsi: add iwdg1 node as before
- stm32mp151.dtsi: add iwdg2 interrupt definition
- stm32mp151.dtsi: add tamp node clocks definition
- stm32mp151.dtsi: keep pin-controller{,-z} node names
- stm32mp157a-dk1.dts: disable RCC secure-status.
- stm32mp157c-dk2.dts: disable RCC secure-status.
- stm32mp157c-dk2.dts: drop cryp1 okay status
- stm32mp157c-ed1.dts (included by ev1): disable RCC secure-status.
- stm32mp157c-ed1.dts: (included by ev1): drop cryp1 okay status
- Remove resources related to input DT bindings using explicit inline
comments as those are under Linux kernel GPLv2 licensing model.

This update is required to add a new board based on Linux 5.19-rc6
dts file.

Signed-off-by: Johann Neuhauser <jneuhauser@dh-electronics.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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dts: stm32mp1: add IWDG1/2 watchdogs support

Add the IWDG1 and IWDG2 watchdog support in stm32mp15 SoCs and define
the watchdog timeout configuration.

On ED1/EV1/DK1/DK2 boards, IWDG1 is default di

dts: stm32mp1: add IWDG1/2 watchdogs support

Add the IWDG1 and IWDG2 watchdog support in stm32mp15 SoCs and define
the watchdog timeout configuration.

On ED1/EV1/DK1/DK2 boards, IWDG1 is default disabled while IWDG2 is
enabled and assigned to non-secure world. Despite IWDG2 is assigned
to non-secure world, TEE may need to kick the watchdog during
transitions when non-secure is not able to do so as some power
management transitions.

Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>

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dts: stm32mp1: bump to Linux kernel v5.6.10 DTS files

Synchronize with STM32MP15 DTS files from Linux kernel v5.6.10.

Changes made on DTS/DTSI file from Linux kernel v5.6.10:
- stm32mp151.dtsi: add

dts: stm32mp1: bump to Linux kernel v5.6.10 DTS files

Synchronize with STM32MP15 DTS files from Linux kernel v5.6.10.

Changes made on DTS/DTSI file from Linux kernel v5.6.10:
- stm32mp151.dtsi: add ETZPC node, declare PSCI v1.0.
- stm32mp157a-dk1.dts: disable RCC secure-status.
- stm32mp157c-dk2.dts: disable RCC secure-status.
- stm32mp157c-ed1.dts (included by ev1): disable RCC secure-status.
- Remove resources related to input DT bindings using explicit inline
comments as those are under Linux kernel GPLv2 licensing model.

ETZPC node useless in non-secure Linux kernel but needed by secure
world.

RCC node remains disabled for the secure side so that RCC TZ
hardening is disabled since mainline Linux kernel and U-Boot
do not support SCMI clocks and reset domains. IWDG1, ETZPC, STGEN
and CRYP1 devices are described to ease their later integration.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Acked-by: Jerome Forissier <jerome@forissier.org>

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