Re: [PATCH 1/8] dt-bindings: omap: add new binding for PRM instances

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On 08/08/2019 07:35, Keerthy wrote:


On 07/08/19 1:18 PM, Tero Kristo wrote:
Add new binding for OMAP PRM (Power and Reset Manager) instances. Each
of these will act as a power domain controller and potentially as a reset
provider.

Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
---
  .../devicetree/bindings/arm/omap/prm-inst.txt      | 24 ++++++++++++++++++++++
  1 file changed, 24 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/arm/omap/prm-inst.txt

diff --git a/Documentation/devicetree/bindings/arm/omap/prm-inst.txt b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt
new file mode 100644
index 0000000..e0ae87b
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt
@@ -0,0 +1,24 @@
+OMAP PRM instance bindings
+
+Power and Reset Manager is an IP block on OMAP family of devices which
+handle the power domains and their current state, and provide reset
+handling for the domains and/or separate IP blocks under the power domain
+hierarchy.
+
+Required properties:
+- compatible:    Must be one of:
+        "ti,am3-prm-inst"
+        "ti,am4-prm-inst"
+        "ti,omap4-prm-inst"
+        "ti,omap5-prm-inst"
+        "ti,dra7-prm-inst"
+- reg:        Contains PRM instance register address range
+        (base address and length)

How about reset-cells property, Isn't that a mandatory property?

It is optional, but you are right, should be added to this.

-Tero


+
+Example:
+
+prm_dsp2: prm@1b00 {
+    compatible = "ti,dra7-prm-inst";
+    reg = <0x1b00 0x40>;
+    #reset-cells = <1>;
+};


--
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