dt-bindings: hwlock: qcom-hwspinlock: add syscon to MSM8974

The TCSR_MUTEX region contains two set of registers: mutex and halt.
Add syscon, so the TCSR mutex device (hwspinlock) can use MMIO based
method and in the same time share regmap with other devices for the halt
regs.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Luca Weiss <luca@z3ntu.xyz> # fairphone-fp2
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220920150414.637634-2-krzysztof.kozlowski@linaro.org

diff --git a/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml b/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml
index 1a3adf7..ee27261 100644 (file)
--- a/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml
+++ b/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml
@@ -24,9 +24,13 @@ properties:
               - qcom,apq8084-tcsr-mutex
               - qcom,ipq6018-tcsr-mutex
               - qcom,msm8226-tcsr-mutex
-              - qcom,msm8974-tcsr-mutex
               - qcom,msm8994-tcsr-mutex
           - const: qcom,tcsr-mutex
+      - items:
+          - enum:
+              - qcom,msm8974-tcsr-mutex
+          - const: qcom,tcsr-mutex
+          - const: syscon
 
   reg:
     maxItems: 1