| Message ID | 20230921080301.253563-1-gatien.chevallier@foss.st.com |
|---|---|
| Headers | show |
| Series | hwrng: stm32: support STM32MP13x platforms | expand |
On Thu, 21 Sep 2023 10:02:53 +0200, Gatien Chevallier wrote: > Introduce st,stm32mp13-rng compatible and add st,rng-lock-conf. > > If st,rng-lock-conf is set, the RNG configuration in RNG_CR, RNG_HTCR > and RNG_NSCR will be locked. It is supported starting from the RNG > version present in the STM32MP13 > > Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com> > --- > > Changes in V3: > - Squashed with: patch [V2 07/10] > - Declare st,rng-lock-conf at top level and restrain its uses > depending on the compatible. I discarded Rob's tag as for > the modifications. > > .../devicetree/bindings/rng/st,stm32-rng.yaml | 20 ++++++++++++++++++- > 1 file changed, 19 insertions(+), 1 deletion(-) > Reviewed-by: Rob Herring <robh@kernel.org>
Hi On 9/21/23 10:02, Gatien Chevallier wrote: > The STM32MP13x platforms have a RNG hardware block that supports > customization, a conditional reset sequences that allows to > recover from certain situations and a configuration locking > mechanism. > > This series adds support for the mentionned features. Note that > the hardware RNG can and should be managed in the secure world > for this platform, hence the rng not being default enabled on > the STM32MP135F-DK board. > > Changes in V2: > - Use pm_ptr() and add __maybe_unused on PM API > - Correct bug using WARN_ON > > Changes in V3: > - Squash of bindings patches > - st,rng-lock-conf property declaration rework > - Fix stm32_rng_pm_ops declaration in patch [5/9] > > Gatien Chevallier (9): > dt-bindings: rng: introduce new compatible for STM32MP13x > hwrng: stm32 - use devm_platform_get_and_ioremap_resource() API > hwrng: stm32 - implement STM32MP13x support > hwrng: stm32 - implement error concealment > hwrng: stm32 - rework error handling in stm32_rng_read() > hwrng: stm32 - restrain RNG noise source clock > hwrng: stm32 - support RNG configuration locking mechanism > hwrng: stm32 - rework power management sequences > ARM: dts: stm32: add RNG node for STM32MP13x platforms > > .../devicetree/bindings/rng/st,stm32-rng.yaml | 20 +- > arch/arm/boot/dts/st/stm32mp131.dtsi | 8 + > drivers/char/hw_random/stm32-rng.c | 511 +++++++++++++++--- > 3 files changed, 455 insertions(+), 84 deletions(-) > Patch[9] applied on stm32-next. thanks alex