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From: Abel Vesa <abel.vesa@linaro.org>
Date: Sun, 07 Apr 2024 19:23:21 +0300
Subject: [PATCH v9 1/7] dt-bindings: spmi: Add X1E80100 SPMI PMIC ARB
 schema
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Message-Id: <20240407-spmi-multi-master-support-v9-1-fa151c1391f3@linaro.org>
References: <20240407-spmi-multi-master-support-v9-0-fa151c1391f3@linaro.org>
In-Reply-To: <20240407-spmi-multi-master-support-v9-0-fa151c1391f3@linaro.org>
To: Stephen Boyd <sboyd@kernel.org>, 
 Matthias Brugger <matthias.bgg@gmail.com>, 
 Bjorn Andersson <andersson@kernel.org>, 
 Konrad Dybcio <konrad.dybcio@linaro.org>, 
 Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, 
 Neil Armstrong <neil.armstrong@linaro.org>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>, 
 Rob Herring <robh@kernel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, 
 Conor Dooley <conor+dt@kernel.org>
Cc: Srini Kandagatla <srinivas.kandagatla@linaro.org>, 
 Johan Hovold <johan@kernel.org>, David Collins <quic_collinsd@quicinc.com>, 
 linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, 
 linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, 
 devicetree@vger.kernel.org, Abel Vesa <abel.vesa@linaro.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Add dedicated schema for X1E80100 PMIC ARB (v7) as it allows multiple
buses by declaring them as child nodes.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
---
 .../bindings/spmi/qcom,x1e80100-spmi-pmic-arb.yaml | 136 +++++++++++++++++++++
 1 file changed, 136 insertions(+)

diff --git a/Documentation/devicetree/bindings/spmi/qcom,x1e80100-spmi-pmic-arb.yaml b/Documentation/devicetree/bindings/spmi/qcom,x1e80100-spmi-pmic-arb.yaml
new file mode 100644
index 000000000000..a28b70fb330a
--- /dev/null
+++ b/Documentation/devicetree/bindings/spmi/qcom,x1e80100-spmi-pmic-arb.yaml
@@ -0,0 +1,136 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spmi/qcom,x1e80100-spmi-pmic-arb.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm X1E80100 SPMI Controller (PMIC Arbiter v7)
+
+maintainers:
+  - Stephen Boyd <sboyd@kernel.org>
+
+description: |
+  The X1E80100 SPMI PMIC Arbiter implements HW version 7 and it's an SPMI
+  controller with wrapping arbitration logic to allow for multiple on-chip
+  devices to control up to 2 SPMI separate buses.
+
+  The PMIC Arbiter can also act as an interrupt controller, providing interrupts
+  to slave devices.
+
+properties:
+  compatible:
+    const: qcom,x1e80100-spmi-pmic-arb
+
+  reg:
+    items:
+      - description: core registers
+      - description: tx-channel per virtual slave registers
+      - description: rx-channel (called observer) per virtual slave registers
+
+  reg-names:
+    items:
+      - const: core
+      - const: chnls
+      - const: obsrvr
+
+  ranges: true
+
+  '#address-cells':
+    const: 2
+
+  '#size-cells':
+    const: 2
+
+  qcom,ee:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 5
+    description: >
+      indicates the active Execution Environment identifier
+
+  qcom,channel:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 5
+    description: >
+      which of the PMIC Arb provided channels to use for accesses
+
+patternProperties:
+  "^spmi@[a-f0-9]+$":
+    type: object
+    $ref: /schemas/spmi/spmi.yaml
+    unevaluatedProperties: false
+
+    properties:
+      reg:
+        items:
+          - description: configuration registers
+          - description: interrupt controller registers
+
+      reg-names:
+        items:
+          - const: cnfg
+          - const: intr
+
+      interrupts:
+        maxItems: 1
+
+      interrupt-names:
+        const: periph_irq
+
+      interrupt-controller: true
+
+      '#interrupt-cells':
+        const: 4
+        description: |
+          cell 1: slave ID for the requested interrupt (0-15)
+          cell 2: peripheral ID for requested interrupt (0-255)
+          cell 3: the requested peripheral interrupt (0-7)
+          cell 4: interrupt flags indicating level-sense information,
+                  as defined in dt-bindings/interrupt-controller/irq.h
+
+required:
+  - compatible
+  - reg-names
+  - qcom,ee
+  - qcom,channel
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      spmi: arbiter@c400000 {
+        compatible = "qcom,x1e80100-spmi-pmic-arb";
+        reg = <0 0x0c400000 0 0x3000>,
+              <0 0x0c500000 0 0x4000000>,
+              <0 0x0c440000 0 0x80000>;
+        reg-names = "core", "chnls", "obsrvr";
+
+        qcom,ee = <0>;
+        qcom,channel = <0>;
+
+        #address-cells = <2>;
+        #size-cells = <2>;
+        ranges;
+
+        spmi_bus0: spmi@c42d000 {
+          reg = <0 0x0c42d000 0 0x4000>,
+                <0 0x0c4c0000 0 0x10000>;
+          reg-names = "cnfg", "intr";
+
+          interrupt-names = "periph_irq";
+          interrupts-extended = <&pdc 1 IRQ_TYPE_LEVEL_HIGH>;
+          interrupt-controller;
+          #interrupt-cells = <4>;
+
+          #address-cells = <2>;
+          #size-cells = <0>;
+        };
+      };
+    };

-- 
2.34.1