From d6a9f0c8f635a9177e39db6386575bd6cdd55931 Mon Sep 17 00:00:00 2001 From: Bjorn Andersson Date: Mon, 22 Jun 2020 00:59:54 -0700 Subject: dt-bindings: hwlock: qcom: Allow device on mmio bus In modern Qualcomm platforms the mutex region of the TCSR is forked off into its own block, all with a offset of 0 and stride of 4096, and in some of these platforms no other registers in this region is accessed from Linux. Update the binding to allow the hardware block to be described directly on the mmio bus, in addition to allowing the existing syscon based definition for backwards compatibility. Reviewed-by: Vinod Koul Reviewed-by: Rob Herring Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20200622075956.171058-3-bjorn.andersson@linaro.org Signed-off-by: Bjorn Andersson --- .../devicetree/bindings/hwlock/qcom-hwspinlock.yaml | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'Documentation/devicetree/bindings/hwlock') diff --git a/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml b/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml index 71e63b52edd5..88f975837588 100644 --- a/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml +++ b/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml @@ -19,6 +19,9 @@ properties: - qcom,sfpb-mutex - qcom,tcsr-mutex + reg: + maxItems: 1 + '#hwlock-cells': const: 1 @@ -31,7 +34,12 @@ properties: required: - compatible - '#hwlock-cells' - - syscon + +oneOf: + - required: + - reg + - required: + - syscon additionalProperties: false @@ -46,6 +54,12 @@ examples: compatible = "qcom,tcsr-mutex"; syscon = <&tcsr_mutex_block 0 0x80>; + #hwlock-cells = <1>; + }; + - | + tcsr_mutex: hwlock@1f40000 { + compatible = "qcom,tcsr-mutex"; + reg = <0x01f40000 0x40000>; #hwlock-cells = <1>; }; ... -- cgit v1.2.3