When the RNG device is secured with OP-TEE, it is only accessible with the HWRNG TA, the CONFIG_RNG_OPTEE is needed for STM32MP15 targets with OP-TEE support.
The probe of this RNG driver fails when the TA is not available in OP-TEE and the previous driver can be used, as CONFIG_RNG_STM32MP1 is activated and when the associated node is activated in the device tree with:
&rng1 { status = "okay"; };
When the RNG is used in OP-TEE, this node should be deactivated in the Linux and U-Boot device tree.
Signed-off-by: Patrick Delaunay patrick.delaunay@foss.st.com ---
(no changes since v1)
configs/stm32mp15_defconfig | 1 + configs/stm32mp15_trusted_defconfig | 1 + 2 files changed, 2 insertions(+)
diff --git a/configs/stm32mp15_defconfig b/configs/stm32mp15_defconfig index 2beb88e81d..3f48c677e6 100644 --- a/configs/stm32mp15_defconfig +++ b/configs/stm32mp15_defconfig @@ -119,6 +119,7 @@ CONFIG_DM_REGULATOR_STPMIC1=y CONFIG_REMOTEPROC_STM32_COPRO=y CONFIG_RESET_SCMI=y CONFIG_DM_RNG=y +CONFIG_RNG_OPTEE=y CONFIG_RNG_STM32MP1=y CONFIG_DM_RTC=y CONFIG_RTC_STM32=y diff --git a/configs/stm32mp15_trusted_defconfig b/configs/stm32mp15_trusted_defconfig index c6857d08ec..9f869aca36 100644 --- a/configs/stm32mp15_trusted_defconfig +++ b/configs/stm32mp15_trusted_defconfig @@ -120,6 +120,7 @@ CONFIG_DM_REGULATOR_STPMIC1=y CONFIG_REMOTEPROC_STM32_COPRO=y CONFIG_RESET_SCMI=y CONFIG_DM_RNG=y +CONFIG_RNG_OPTEE=y CONFIG_RNG_STM32MP1=y CONFIG_DM_RTC=y CONFIG_RTC_STM32=y