From: Valentin Caron <valentin.caron@foss.st.com>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: <linux-rtc@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Valentin Caron <valentin.caron@foss.st.com>
Subject: [PATCH 1/2] dt-bindings: rtc: stm32: introduce new st,stm32mp25-rtc compatible
Date: Tue, 11 Jun 2024 18:19:57 +0200 [thread overview]
Message-ID: <20240611161958.469209-2-valentin.caron@foss.st.com> (raw)
In-Reply-To: <20240611161958.469209-1-valentin.caron@foss.st.com>
Introduce new st,stm32mp25-rtc compatible. It is based on st,stm32mp1-rtc.
Difference is that stm32mp25 SoC implements a triple protection on RTC
registers:
- Secure bit based protection
- Privileged context based protection
- Compartment ID filtering based protection
This driver will now check theses configurations before probing to avoid
exceptions and fake reads on register.
Link: https://www.st.com/resource/en/reference_manual/rm0457-stm32mp25xx-advanced-armbased-3264bit-mpus-stmicroelectronics.pdf#page=4081
Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
---
Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml
index 4703083d1f11f..65a8a93ef5753 100644
--- a/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml
@@ -15,6 +15,7 @@ properties:
- st,stm32-rtc
- st,stm32h7-rtc
- st,stm32mp1-rtc
+ - st,stm32mp25-rtc
reg:
maxItems: 1
@@ -90,7 +91,9 @@ allOf:
properties:
compatible:
contains:
- const: st,stm32mp1-rtc
+ anyOf:
+ - const: st,stm32mp1-rtc
+ - const: st,stm32mp25-rtc
then:
properties:
--
2.25.1
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next prev parent reply other threads:[~2024-06-11 16:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-11 16:19 [PATCH 0/2] rtc: stm32: introduce new st,stm32mp25-rtc compatible Valentin Caron
2024-06-11 16:19 ` Valentin Caron [this message]
2024-06-11 18:16 ` [PATCH 1/2] dt-bindings: " Conor Dooley
2024-06-11 16:19 ` [PATCH 2/2] rtc: stm32: add new st,stm32mp25-rtc compatible and check RIF configuration Valentin Caron
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