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Message-Id: <20221116010453.41320-1-blarson@amd.com>
Date: Tue, 15 Nov 2022 17:04:53 -0800
From: Brad Larson <brad@...sando.io>
To: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org,
adrian.hunter@...el.com, alcooperx@...il.com,
andy.shevchenko@...il.com, arnd@...db.de, blarson@....com,
brijeshkumar.singh@....com, catalin.marinas@....com,
gsomlo@...il.com, gerg@...ux-m68k.org, krzk@...nel.org,
krzysztof.kozlowski+dt@...aro.org, lee.jones@...aro.org,
broonie@...nel.org, yamada.masahiro@...ionext.com,
p.zabel@...gutronix.de, piotrs@...ence.com, p.yadav@...com,
rdunlap@...radead.org, robh+dt@...nel.org, samuel@...lland.org,
fancer.lancer@...il.com, suravee.suthikulpanit@....com,
thomas.lendacky@....com, ulf.hansson@...aro.org, will@...nel.org,
devicetree@...r.kernel.org
Subject: [PATCH v7 06/17] dt-bindings: mfd: amd,pensando-elbasr: Add AMD Pensando Elba System Resource chip
Add support for the AMD Pensando Elba SoC System Resource chip
using the SPI interface.
Signed-off-by: Brad Larson <blarson@....com>
---
v7:
- Use system-controller for the device with four chip-selects
connected over spi.
- Delete child by moving reset-controller into the parent.
- Updated and used dtschema-2022.11 and yamllint-1.28.0
v6:
- Expand description, rename nodes and change compatible usage
v5:
- Change to AMD Pensando instead of Pensando
v4:
- Change Maintained to Supported
.../bindings/mfd/amd,pensando-elbasr.yaml | 74 +++++++++++++++++++
1 file changed, 74 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/amd,pensando-elbasr.yaml
diff --git a/Documentation/devicetree/bindings/mfd/amd,pensando-elbasr.yaml b/Documentation/devicetree/bindings/mfd/amd,pensando-elbasr.yaml
new file mode 100644
index 000000000000..ac44d7d0a91a
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/amd,pensando-elbasr.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/amd,pensando-elbasr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AMD Pensando Elba SoC Resource Controller bindings
+
+description: |
+ AMD Pensando Elba SoC Resource Controller functions are
+ accessed with four chip-selects. Reset control is on CS0.
+
+maintainers:
+ - Brad Larson <blarson@....com>
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - amd,pensando-elbasr
+
+ "#reset-cells":
+ const: 1
+
+ interrupts:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - spi-max-frequency
+
+allOf:
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ num-cs = <4>;
+ status = "okay";
+
+ rstc: system-controller@0 {
+ compatible = "amd,pensando-elbasr";
+ reg = <0>;
+ spi-max-frequency = <12000000>;
+ #reset-cells = <1>;
+ };
+
+ system-controller@1 {
+ compatible = "amd,pensando-elbasr";
+ reg = <1>;
+ spi-max-frequency = <12000000>;
+ };
+
+ system-controller@2 {
+ compatible = "amd,pensando-elbasr";
+ reg = <2>;
+ spi-max-frequency = <12000000>;
+ interrupt-parent = <&porta>;
+ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+ };
+
+ system-controller@3 {
+ compatible = "amd,pensando-elbasr";
+ reg = <3>;
+ spi-max-frequency = <12000000>;
+ };
+ };
--
2.17.1
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