Re: [PATCH v3 2/3] dt-bindings: mfd: syscon: Drop custom select for older dtschema

[Conor Dooley <conor@kernel.org>]

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On Mon, Jun 08, 2026 at 10:44:25PM +0200, Krzysztof Kozlowski wrote:
> Older dtschema <2024.02 required custom select to avoid applying this
> binding to anything having "syscon" compatible.  That's not the case
> anymore and this additional select has two headaches:
> 
> 1. Duplicates all the compatibles listed in the schema.
> 
> 2. Is error-prone, because it requires contributor to add the compatible
>    in two places, otherwise the schema will be silently ignored.
>    The select list already misses mentioning compatibles:
>    mediatek,mt8365-infracfg-nao and renesas,r9a08g046-lvds-cmn (with the
>    latter being reverted for different reasons).
> 
> This requires bumping minimum dtschema requirement to v2024.04, which
> feels old enough to be a safe requirement.

I agree, seems reasonable enough given it's a jump from 2023.09 and not
some large jump.
The diff is nice too!
I assume Rob will be taking it, but just in case..
Acked-by: Conor Dooley <conor.dooley@microchip.com>

Cheers,
Conor.

> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
> 
> ---
> 
> Changes in v3:
> 1. Bump dtschema requirement
> 
> Changes in v2:
> 1. New patch
> ---
>  Documentation/devicetree/bindings/Makefile        |   2 +-
>  Documentation/devicetree/bindings/mfd/syscon.yaml | 116 ----------------------
>  2 files changed, 1 insertion(+), 117 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
> index 7b668f7fd400..40c2094f47c2 100644
> --- a/Documentation/devicetree/bindings/Makefile
> +++ b/Documentation/devicetree/bindings/Makefile
> @@ -6,7 +6,7 @@ DT_MK_SCHEMA ?= dt-mk-schema
>  DT_SCHEMA_LINT = $(shell which yamllint || \
>    echo "warning: python package 'yamllint' not installed, skipping" >&2)
>  
> -DT_SCHEMA_MIN_VERSION = 2023.9
> +DT_SCHEMA_MIN_VERSION = 2024.4
>  
>  PHONY += check_dtschema_version
>  check_dtschema_version:
> diff --git a/Documentation/devicetree/bindings/mfd/syscon.yaml b/Documentation/devicetree/bindings/mfd/syscon.yaml
> index 9c81010d5a74..b70018bf1bcf 100644
> --- a/Documentation/devicetree/bindings/mfd/syscon.yaml
> +++ b/Documentation/devicetree/bindings/mfd/syscon.yaml
> @@ -19,122 +19,6 @@ description: |
>  maintainers:
>    - Lee Jones <lee@kernel.org>
>  
> -# Need a select with all compatibles listed for compatibility with older
> -# dtschema (<2024.02), so this will not be selected for other schemas having
> -# syscon fallback.
> -select:
> -  properties:
> -    compatible:
> -      contains:
> -        enum:
> -          - airoha,en7581-pbus-csr
> -          - al,alpine-sysfabric-service
> -          - allwinner,sun8i-a83t-system-controller
> -          - allwinner,sun8i-h3-system-controller
> -          - allwinner,sun8i-v3s-system-controller
> -          - allwinner,sun50i-a64-system-controller
> -          - altr,l3regs
> -          - altr,sdr-ctl
> -          - amd,pensando-elba-syscon
> -          - amlogic,meson-mx-assist
> -          - amlogic,meson-mx-bootrom
> -          - amlogic,meson8-analog-top
> -          - amlogic,meson8b-analog-top
> -          - amlogic,meson8-pmu
> -          - amlogic,meson8b-pmu
> -          - apm,merlin-poweroff-mailbox
> -          - apm,mustang-poweroff-mailbox
> -          - apm,xgene-csw
> -          - apm,xgene-efuse
> -          - apm,xgene-mcb
> -          - apm,xgene-rb
> -          - apm,xgene-scu
> -          - atmel,sama5d2-sfrbu
> -          - atmel,sama5d3-nfc-io
> -          - atmel,sama5d3-sfrbu
> -          - atmel,sama5d4-sfrbu
> -          - axis,artpec6-syscon
> -          - brcm,cru-clkset
> -          - brcm,sr-cdru
> -          - brcm,sr-mhb
> -          - cirrus,ep7209-syscon1
> -          - cirrus,ep7209-syscon2
> -          - cirrus,ep7209-syscon3
> -          - cnxt,cx92755-uc
> -          - econet,en751221-chip-scu
> -          - freecom,fsg-cs2-system-controller
> -          - fsl,imx93-aonmix-ns-syscfg
> -          - fsl,imx93-wakeupmix-syscfg
> -          - fsl,ls1088a-reset
> -          - fsl,vf610-anatop
> -          - fsl,vf610-mscm-cpucfg
> -          - hisilicon,dsa-subctrl
> -          - hisilicon,hi6220-sramctrl
> -          - hisilicon,hip04-ppe
> -          - hisilicon,pcie-sas-subctrl
> -          - hisilicon,peri-subctrl
> -          - hpe,gxp-sysreg
> -          - loongson,ls1b-syscon
> -          - loongson,ls1c-syscon
> -          - lsi,axxia-syscon
> -          - marvell,armada-3700-cpu-misc
> -          - marvell,armada-3700-nb-pm
> -          - marvell,armada-3700-avs
> -          - marvell,armada-3700-usb2-host-device-misc
> -          - marvell,armada-3700-usb2-host-misc
> -          - marvell,dove-global-config
> -          - mediatek,mt2701-pctl-a-syscfg
> -          - mediatek,mt2712-pctl-a-syscfg
> -          - mediatek,mt6397-pctl-pmic-syscfg
> -          - mediatek,mt7981-topmisc
> -          - mediatek,mt7988-topmisc
> -          - mediatek,mt8135-pctl-a-syscfg
> -          - mediatek,mt8135-pctl-b-syscfg
> -          - mediatek,mt8173-pctl-a-syscfg
> -          - mediatek,mt8365-syscfg
> -          - microchip,lan966x-cpu-syscon
> -          - microchip,mpfs-control-scb
> -          - microchip,mpfs-sysreg-scb
> -          - microchip,sam9x60-sfr
> -          - microchip,sama7d65-ddr3phy
> -          - microchip,sama7d65-sfrbu
> -          - microchip,sama7g5-ddr3phy
> -          - mscc,ocelot-cpu-syscon
> -          - mstar,msc313-pmsleep
> -          - nuvoton,ma35d1-sys
> -          - nuvoton,wpcm450-shm
> -          - nxp,s32g2-gpr
> -          - nxp,s32g3-gpr
> -          - qcom,apq8064-mmss-sfpb
> -          - qcom,apq8064-sps-sic
> -          - rockchip,px30-qos
> -          - rockchip,rk3036-qos
> -          - rockchip,rk3066-qos
> -          - rockchip,rk3128-qos
> -          - rockchip,rk3228-qos
> -          - rockchip,rk3288-qos
> -          - rockchip,rk3368-qos
> -          - rockchip,rk3399-qos
> -          - rockchip,rk3528-qos
> -          - rockchip,rk3562-qos
> -          - rockchip,rk3568-qos
> -          - rockchip,rk3576-qos
> -          - rockchip,rk3588-qos
> -          - rockchip,rv1126-qos
> -          - st,spear1340-misc
> -          - stericsson,nomadik-pmu
> -          - starfive,jh7100-sysmain
> -          - ti,am62-opp-efuse-table
> -          - ti,am62-usb-phy-ctrl
> -          - ti,am625-dss-oldi-io-ctrl
> -          - ti,am62p-cpsw-mac-efuse
> -          - ti,am654-dss-oldi-io-ctrl
> -          - ti,j784s4-acspcie-proxy-ctrl
> -          - ti,j784s4-pcie-ctrl
> -          - ti,keystone-pllctrl
> -  required:
> -    - compatible
> -
>  properties:
>    compatible:
>      oneOf:
> 
> -- 
> 2.53.0
> 

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