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>
---
 .../devicetree/bindings/hwlock/qcom-hwspinlock.yaml         | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml b/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml
index 1a3adf75934b..ee2726149cf3 100644
--- 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
-- 
2.34.1

On Tue, 20 Sep 2022 17:04:12 +0200, Krzysztof Kozlowski wrote:
> 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>
> ---
>  .../devicetree/bindings/hwlock/qcom-hwspinlock.yaml         | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 

Acked-by: Rob Herring <robh@kernel.org>