Add DT bindings for the QUP GENI SPI controller on sa8255p platform.
SA8255p platform abstracts resources such as clocks, interconnect and
GPIO pins configuration in Firmware. SCMI power and perf protocols are
utilized to request resource configurations.
SA8255p platform does not require the Serial Engine (SE) common properties
as the SE firmware is loaded and managed by the TrustZone (TZ) secure
environment.
Co-developed-by: Nikunj Kela <quic_nkela@quicinc.com>
Signed-off-by: Nikunj Kela <quic_nkela@quicinc.com>
Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
---
.../bindings/spi/qcom,sa8255p-geni-spi.yaml | 63 +++++++++++++++++++
1 file changed, 63 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/qcom,sa8255p-geni-spi.yaml
diff --git a/Documentation/devicetree/bindings/spi/qcom,sa8255p-geni-spi.yaml b/Documentation/devicetree/bindings/spi/qcom,sa8255p-geni-spi.yaml
new file mode 100644
index 000000000000..8c6825b8ddb4
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/qcom,sa8255p-geni-spi.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/qcom,sa8255p-geni-spi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: GENI based Qualcomm Universal Peripheral (QUP) Serial Peripheral Interface (SPI)
+
+maintainers:
+ - Praveen Talari <praveen.talari@oss.qualcomm.com>
+
+properties:
+ compatible:
+ const: qcom,sa8255p-geni-spi
+
+ reg:
+ maxItems: 1
+
+ dmas:
+ maxItems: 2
+
+ dma-names:
+ items:
+ - const: tx
+ - const: rx
+
+ interrupts:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 2
+
+ power-domain-names:
+ items:
+ - const: power
+ - const: perf
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - power-domains
+ - power-domain-names
+
+allOf:
+ - $ref: /schemas/spi/spi-controller.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/dma/qcom-gpi.h>
+
+ spi@888000 {
+ compatible = "qcom,sa8255p-geni-spi";
+ reg = <0x888000 0x4000>;
+ interrupts = <GIC_SPI 584 IRQ_TYPE_LEVEL_HIGH>;
+ dmas = <&gpi_dma0 0 0 QCOM_GPI_SPI>,
+ <&gpi_dma0 1 0 QCOM_GPI_SPI>;
+ power-domains = <&scmi0_pd 0>, <&scmi0_dvfs 0>;
+ power-domain-names = "power", "perf";
+ };
--
2.34.1