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SFS:(13230028)(4636009)(376002)(39860400002)(136003)(396003)(346002)(186006)(82310400008)(1800799006)(451199021)(36840700001)(46966006)(40470700004)(40460700003)(2616005)(47076005)(8676002)(316002)(426003)(4326008)(8936002)(7406005)(7416002)(70586007)(5660300002)(36860700001)(36756003)(356005)(41300700001)(82740400003)(40480700001)(70206006)(6916009)(478600001)(83380400001)(54906003)(81166007)(966005)(16526019)(2906002)(6666004)(26005)(336012)(1076003)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Aug 2023 18:05:41.9973 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5b84adeb-b16b-436e-0132-08db9a9593a0 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF0002636B.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB6309 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Support the AMD Pensando Elba 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 Reviewed-by: Krzysztof Kozlowski --- v14 changes: - Change GPL-2.0-only or BSD-2-Clause to GPL-2.0-only OR BSD-2-Clause v11 changes: - Fixed the compatible which should have stayed as 'amd,pensando-elba-ctrl', the commit message, and the filename - Reference spi-peripheral-props - Delete spi-max-frequency - Remove num-cs from example 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. --- .../soc/amd/amd,pensando-elba-ctrl.yaml | 58 +++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/amd/amd,pensando-elba-ctrl.yaml diff --git a/Documentation/devicetree/bindings/soc/amd/amd,pensando-elba-ctrl.yaml b/Documentation/devicetree/bindings/soc/amd/amd,pensando-elba-ctrl.yaml new file mode 100644 index 000000000000..e96978ad1e37 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/amd/amd,pensando-elba-ctrl.yaml @@ -0,0 +1,58 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/soc/amd/amd,pensando-elba-ctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: AMD Pensando Elba SoC Controller + +description: + The AMD Pensando Elba 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 + +properties: + compatible: + enum: + - amd,pensando-elba-ctrl + + reg: + maxItems: 1 + + '#reset-cells': + const: 1 + + interrupts: + maxItems: 1 + +required: + - compatible + - '#reset-cells' + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + +examples: + - | + #include + + spi { + #address-cells = <1>; + #size-cells = <0>; + + system-controller@0 { + compatible = "amd,pensando-elba-ctrl"; + reg = <0>; + spi-max-frequency = <12000000>; + interrupt-parent = <&porta>; + interrupts = <0 IRQ_TYPE_LEVEL_LOW>; + #reset-cells = <1>; + }; + }; + +...