[PATCH v2 0/5] rtc: Enhance RTC driver with BBPU bit definitions and shutdown handling
Shunxi Zhang (章顺喜)
ot_shunxi.zhang at mediatek.com
Thu Nov 20 18:45:47 PST 2025
On Thu, 2025-11-20 at 08:14 -0600, Rob Herring wrote:
> External email : Please do not click links or open attachments until
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>
>
> On Thu, 20 Nov 2025 20:17:56 +0800, ot_shunxi.zhang at mediatek.com
> wrote:
> > From: Shunxi Zhang <ot_shunxi.zhang at mediatek.com>
> >
> > (1) Add new bits definitions for RTC_BBPU register.
> > (2) Add new functions to reset the BBPU alarm status in mt6397 RTC
> > driver
> > (3) Add mtk_rtc_shutdown function to handle RTC shutdown events.
> > (4) For the V1 version comments, the following modifications are
> > made:
> > (4.1)the formatting changes are separated into a distinct patch.
> > (4.2)Since the rtc-mt6397.c file is a fusion of multiple RTC
> > drivers
> > for the mt6358, mt6359, and mt6357 RTCs, the definitions of certain
> > bits
> > in the RTC_BBPU register differ among these RTCs. The mt6359
> > supports
> > the alarm status bit, while both mt6358 and mt6357 do not.
> > Therefore,
> > the alarm-sta-supported property is added in the mt6359.dtsi file
> > to
> > differentiate between the different RTCs.
> > (4.3)Additionally, the operation to disable IRQ in the shutdown
> > function
> > is removed.
> >
> > Shunxi Zhang (5):
> > mfd: mt6397: Fix formatting of RTC_BBPU_KEY definition
> > mfd: mt6397: Add bit definitions and struct members to support
> > alarm
> > status
> > rtc: mt6397: Fix formatting of platform driver structure
> > rtc: mt6397: Add BBPU alarm status reset and shutdown handling
> > arm64: dts: mediatek: mt6359: Add alarm-sta-supported property to
> > RTC
> > node
> >
> > arch/arm64/boot/dts/mediatek/mt6359.dtsi | 1 +
> > drivers/rtc/rtc-mt6397.c | 32
> > +++++++++++++++++++++++-
> > include/linux/mfd/mt6397/rtc.h | 5 +++-
> > 3 files changed, 36 insertions(+), 2 deletions(-)
> >
> > --
> > 2.45.2
> >
> >
> >
>
>
> My bot found new DTB warnings on the .dts files added or changed in
> this
> series.
>
> Some warnings may be from an existing SoC .dtsi. Or perhaps the
> warnings
> are fixed by another series. Ultimately, it is up to the platform
> maintainer whether these warnings are acceptable or not. No need to
> reply
> unless the platform maintainer has comments.
>
> If you already ran DT checks and didn't see these error(s), then
> make sure dt-schema is up to date:
>
> pip3 install dtschema --upgrade
>
Dir sir,
Thank you for your comment; I will check the DTS file again according
to the method you posted.
Best Regards
Shunxi Zhang
>
> This patch series was applied (using b4) to base:
> Base: attempting to guess base-commit...
> Base: tags/next-20251119 (exact match)
> Base: tags/next-20251119 (use --merge-base to override)
>
> If this is not the correct base, please add 'base-commit' tag
> (or use b4 which does this automatically)
>
> New warnings running 'make CHECK_DTBS=y for
> arch/arm64/boot/dts/mediatek/' for
> 20251120121805.6775-1-ot_shunxi.zhang at mediatek.com:
>
> arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8395-kontron-3-5-sbc-i1200.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk-ufs.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku4.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8370-genio-510-evk.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku1.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8390-genio-700-evk.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8195-demo.dtb: pmic (mediatek,mt6359):
> rtc: Unevaluated properties are not allowed ('mediatek,alarm-sta-
> supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8192-asurada-hayato-r1.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r0.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8188-evb.dtb: pmic (mediatek,mt6359):
> rtc: Unevaluated properties are not allowed ('mediatek,alarm-sta-
> supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8370-grinn-genio-510-sbc.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku7.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku6.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku3.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku0.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8390-grinn-genio-700-sbc.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8195-cherry-dojo-r1.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8192-evb.dtb: pmic (mediatek,mt6359):
> rtc: Unevaluated properties are not allowed ('mediatek,alarm-sta-
> supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku2.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r3.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
> arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku5.dtb: pmic
> (mediatek,mt6359): rtc: Unevaluated properties are not allowed
> ('mediatek,alarm-sta-supported' was unexpected)
> from schema $id:
> https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/mediatek,mt6397.yaml__;!!CTRNKA9wMg0ARbw!nQw6Qn5fbdrGrDMcdCNFw42XaQlpDm620noZTXdteN4gm8gBgWrGRQgqriHI20DZb-6rPCLoZoG4nzBhZFlr$
>
>
>
>
>
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