> On Mon, Mar 20, 2023 at 05:58:00PM +0100, Lorenzo Bianconi wrote: > > Since the cpuboot memory region is not part of the RAM SoC, move ilm in > > a deidicated syscon node. > > This patch helps to keep backward-compatibility with older version of > > uboot codebase where we have a limit of 8 reserved-memory dts child > > nodes. > > Maybe, but breaks the ABI. It also looks like a step backwards. Fix your > u-boot. Can you please give some more details about ABI breakage? mtk_wed driver is supposed to be backward compatible with respect to the older dts description (please take a look to patch 5/10 and 8/10). > > > > > Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx> > > --- > > .../arm/mediatek/mediatek,mt7622-wed.yaml | 14 +++--- > > .../soc/mediatek/mediatek,mt7986-wo-ilm.yaml | 45 +++++++++++++++++++ > > 2 files changed, 53 insertions(+), 6 deletions(-) > > create mode 100644 Documentation/devicetree/bindings/soc/mediatek/mediatek,mt7986-wo-ilm.yaml > > > > diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml > > index 7f6638d43854..5d2397ec5891 100644 > > --- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml > > +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml > > @@ -32,14 +32,12 @@ properties: > > memory-region: > > items: > > - description: firmware EMI region > > - - description: firmware ILM region > > - description: firmware DLM region > > - description: firmware CPU DATA region > > > > memory-region-names: > > items: > > - const: wo-emi > > - - const: wo-ilm > > - const: wo-dlm > > - const: wo-data > > > > @@ -51,6 +49,10 @@ properties: > > $ref: /schemas/types.yaml#/definitions/phandle > > description: mediatek wed-wo cpuboot controller interface. > > > > + mediatek,wo-ilm: > > + $ref: /schemas/types.yaml#/definitions/phandle > > + description: mediatek wed-wo ilm interface. > > + > > allOf: > > - if: > > properties: > > @@ -63,6 +65,7 @@ allOf: > > memory-region: false > > mediatek,wo-ccif: false > > mediatek,wo-cpuboot: false > > + mediatek,wo-ilm: false > > > > required: > > - compatible > > @@ -97,11 +100,10 @@ examples: > > reg = <0 0x15010000 0 0x1000>; > > interrupts = <GIC_SPI 205 IRQ_TYPE_LEVEL_HIGH>; > > > > - memory-region = <&wo_emi>, <&wo_ilm>, <&wo_dlm>, > > - <&wo_data>; > > - memory-region-names = "wo-emi", "wo-ilm", "wo-dlm", > > - "wo-data"; > > + memory-region = <&wo_emi>, <&wo_dlm>, &wo_data>; > > + memory-region-names = "wo-emi", "wo-dlm", "wo-data"; > > mediatek,wo-ccif = <&wo_ccif0>; > > mediatek,wo-cpuboot = <&wo_cpuboot>; > > + mediatek,wo-ilm = <&wo_ilm>; > > }; > > }; > > diff --git a/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt7986-wo-ilm.yaml b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt7986-wo-ilm.yaml > > new file mode 100644 > > index 000000000000..2a3775cd941e > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt7986-wo-ilm.yaml > > @@ -0,0 +1,45 @@ > > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/soc/mediatek/mediatek,mt7986-wo-ilm.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: MediaTek Wireless Ethernet Dispatch (WED) WO ILM firmware interface for MT7986 > > Either this region is some memory or it's a device. Sounds like the > former and this is not a 'syscon'. ILM and DLM are mmio regions used to store Wireless Ethernet Dispatch firmware sections. AFAIU reserved-memory nodes are supposed to be used just for RAM areas, correct? What do you think would be the best dts node type for ILM and DLM? Another possibility I was discussing with Felix is to move ILM and DLM definitions in WED node reg section, something like: wed0: wed@15010000 { compatible = "mediatek,mt7986-wed"; reg = <0 0x15010000 0 0x1000>, <0 0x151e0000 0 0x8000>, <0 0x151e8000 0 0x2000>; ... }; Doing so we need to get rid of syscon in WED compatible string, right? Is it acceptable? Regards, Lorenzo > > > + > > +maintainers: > > + - Lorenzo Bianconi <lorenzo@xxxxxxxxxx> > > + - Felix Fietkau <nbd@xxxxxxxx> > > + > > +description: > > + The MediaTek wo-ilm (Information Lifecycle Management) provides a configuration > > + interface for WiFi critical data used by WED WO firmware. WED WO controller is > > + used to perform offload rx packet processing (e.g. 802.11 aggregation packet > > + reordering or rx header translation) on MT7986 soc. > > + > > +properties: > > + compatible: > > + items: > > + - enum: > > + - mediatek,mt7986-wo-ilm > > + - const: syscon > > + > > + reg: > > + maxItems: 1 > > + > > +required: > > + - compatible > > + - reg > > + > > +additionalProperties: false > > + > > +examples: > > + - | > > + soc { > > + #address-cells = <2>; > > + #size-cells = <2>; > > + > > + syscon@151e0000 { > > + compatible = "mediatek,mt7986-wo-ilm", "syscon"; > > + reg = <0 0x151e0000 0 0x8000>; > > + }; > > + }; > > -- > > 2.39.2 > >
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