Support the AMD Pensando SoC Controller which is a SPI connected device providing a miscellaneous set of essential board control/status registers. This device is present in all Pensando SoC based designs. Signed-off-by: Brad Larson <blarson@xxxxxxx> --- v10 changes: - Property renamed to amd,pensando-ctrl - Driver is renamed and moved to soc/drivers/amd affecting binding - Delete cs property, driver handles device node creation from parent num-cs fixing schema reg error in a different way v9 changes: - Instead of four nodes, one per chip-select, a single node is used with reset-cells in the parent. - No MFD API is used anymore in the driver so it made sense to move this to drivers/spi. - This driver is common for all Pensando SoC based designs so changed the name to pensando-sr.c to not make it Elba SoC specific. - Added property cs for the chip-select number which is used by the driver to create /dev/pensr0.<cs> --- .../bindings/soc/amd/amd,pensando-ctrl.yaml | 60 +++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/amd/amd,pensando-ctrl.yaml diff --git a/Documentation/devicetree/bindings/soc/amd/amd,pensando-ctrl.yaml b/Documentation/devicetree/bindings/soc/amd/amd,pensando-ctrl.yaml new file mode 100644 index 000000000000..36694077b2e6 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/amd/amd,pensando-ctrl.yaml @@ -0,0 +1,60 @@ +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/soc/amd/amd,pensando-ctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: AMD Pensando SoC Controller + +description: | + The AMD Pensando SoC Controller is a SPI connected device with essential + control/status registers accessed on chip select 0. This device is present + in all Pensando SoC based designs. + +maintainers: + - Brad Larson <blarson@xxxxxxx> + +properties: + compatible: + contains: + enum: + - amd,pensando-ctrl + + reg: + minItems: 1 + + '#reset-cells': + const: 1 + + interrupts: + maxItems: 1 + + spi-max-frequency: true + +required: + - compatible + - spi-max-frequency + - '#reset-cells' + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + + spi { + #address-cells = <1>; + #size-cells = <0>; + num-cs = <4>; + + system-controller@0 { + compatible = "amd,pensando-ctrl"; + reg = <0>; + spi-max-frequency = <12000000>; + interrupt-parent = <&porta>; + interrupts = <0 IRQ_TYPE_LEVEL_LOW>; + #reset-cells = <1>; + }; + }; + +... -- 2.17.1
