On Tue, Sep 21, 2021 at 10:33 PM Chunyan Zhang [off-list ref] wrote:

On Mon, 20 Sept 2021 at 20:42, Rob Herring [off-list ref] wrote:

quoted

On Fri, Sep 17, 2021 at 3:41 AM Chunyan Zhang [off-list ref] wrote:

quoted

On Thu, 16 Sept 2021 at 22:29, Rob Herring [off-list ref] wrote:

quoted

On Thu, Sep 16, 2021 at 04:47:12PM +0800, Chunyan Zhang wrote:

quoted

From: Chunyan Zhang <redacted>

Add a new bindings to describe ums512 clock compatible strings.

Signed-off-by: Chunyan Zhang <redacted>
---
 .../bindings/clock/sprd,ums512-clk.yaml       | 106 ++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml

diff --git a/Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml b/Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml
new file mode 100644
index 000000000000..be3c37180279
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml

@@ -0,0 +1,106 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2019-2021 Unisoc Inc.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/clock/sprd,ums512-clk.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: UMS512 Clock Control Unit Device Tree Bindings
+
+maintainers:
+  - Orson Zhai <orsonzhai@gmail.com>
+  - Baolin Wang <baolin.wang7@gmail.com>
+  - Chunyan Zhang <zhang.lyra@gmail.com>
+
+properties:
+  "#clock-cells":
+    const: 1
+
+  compatible:
+    enum:
+      - sprd,ums512-apahb-gate
+      - sprd,ums512-ap-clk
+      - sprd,ums512-aonapb-clk
+      - sprd,ums512-pmu-gate
+      - sprd,ums512-g0-pll
+      - sprd,ums512-g2-pll
+      - sprd,ums512-g3-pll
+      - sprd,ums512-gc-pll
+      - sprd,ums512-aon-gate
+      - sprd,ums512-audcpapb-gate
+      - sprd,ums512-audcpahb-gate
+      - sprd,ums512-gpu-clk
+      - sprd,ums512-mm-clk
+      - sprd,ums512-mm-gate-clk
+      - sprd,ums512-apapb-gate
+
+  clocks:
+    minItems: 1
+    maxItems: 4
+    description: |
+      The input parent clock(s) phandle for this clock, only list fixed
+      clocks which are declared in devicetree.
+
+  clock-names:
+    minItems: 1
+    maxItems: 4
+    items:
+      - const: ext-26m
+      - const: ext-32k
+      - const: ext-4m
+      - const: rco-100m
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - '#clock-cells'
+
+if:
+  properties:
+    compatible:
+      enum:
+        - sprd,ums512-ap-clk
+        - sprd,ums512-aonapb-clk
+        - sprd,ums512-mm-clk
+then:
+  required:
+    - reg
+
+else:
+  description: |
+    Other UMS512 clock nodes should be the child of a syscon node in
+    which compatible string should be:
+            "sprd,ums512-glbregs", "syscon", "simple-mfd"
+
+    The 'reg' property for the clock node is also required if there is a sub
+    range of registers for the clocks.

In which cases is this not true?

Seems not needed, I will remove 'reg' property for this kind of cases.

Wrong direction. Please keep 'reg'. My question is why can't you
always have it? That is the preference.

Ok. I will address. BTW, do we need 'reg' even though the driver
doesn't read this property? Does that because DT should reflect
hardware topology?

Yes and yes.

Rob