diff mbox series

[v6,3/7] dt-bindings: clk: sprd: add bindings for sc9863a clock controller

Message ID 20200304072730.9193-4-zhang.lyra@gmail.com (mailing list archive)
State Accepted, archived
Headers show
Series Add clocks for Unisoc's SC9863A | expand

Commit Message

Chunyan Zhang March 4, 2020, 7:27 a.m. UTC 
From: Chunyan Zhang <chunyan.zhang@unisoc.com>

add a new bindings to describe sc9863a clock compatible string.

Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
---
 .../bindings/clock/sprd,sc9863a-clk.yaml      | 105 ++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml

Comments

Chunyan Zhang March 9, 2020, 1:33 a.m. UTC | #1 
Hi Rob,

Can I have your acked-by on this patch now? Or do you have comments?

Thanks,
Chunyan


On Wed, 4 Mar 2020 at 15:28, Chunyan Zhang <zhang.lyra@gmail.com> wrote:
>
> From: Chunyan Zhang <chunyan.zhang@unisoc.com>
>
> add a new bindings to describe sc9863a clock compatible string.
>
> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
> ---
>  .../bindings/clock/sprd,sc9863a-clk.yaml      | 105 ++++++++++++++++++
>  1 file changed, 105 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml
>
> diff --git a/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml b/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml
> new file mode 100644
> index 000000000000..bb3a78d8105e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml
> @@ -0,0 +1,105 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright 2019 Unisoc Inc.
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/clock/sprd,sc9863a-clk.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: SC9863A 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,sc9863a-ap-clk
> +      - sprd,sc9863a-aon-clk
> +      - sprd,sc9863a-apahb-gate
> +      - sprd,sc9863a-pmu-gate
> +      - sprd,sc9863a-aonapb-gate
> +      - sprd,sc9863a-pll
> +      - sprd,sc9863a-mpll
> +      - sprd,sc9863a-rpll
> +      - sprd,sc9863a-dpll
> +      - sprd,sc9863a-mm-gate
> +      - sprd,sc9863a-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,sc9863a-ap-clk
> +        - sprd,sc9863a-aon-clk
> +then:
> +  required:
> +    - reg
> +
> +else:
> +  description: |
> +    Other SC9863a clock nodes should be the child of a syscon node in
> +    which compatible string shoule be:
> +            "sprd,sc9863a-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.
> +
> +examples:
> +  - |
> +    ap_clk: clock-controller@21500000 {
> +      compatible = "sprd,sc9863a-ap-clk";
> +      reg = <0 0x21500000 0 0x1000>;
> +      clocks = <&ext_26m>, <&ext_32k>;
> +      clock-names = "ext-26m", "ext-32k";
> +      #clock-cells = <1>;
> +    };
> +
> +  - |
> +    soc {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      ap_ahb_regs: syscon@20e00000 {
> +        compatible = "sprd,sc9863a-glbregs", "syscon", "simple-mfd";
> +        reg = <0 0x20e00000 0 0x4000>;
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +        ranges = <0 0 0x20e00000 0x4000>;
> +
> +        apahb_gate: apahb-gate@0 {
> +          compatible = "sprd,sc9863a-apahb-gate";
> +          reg = <0x0 0x1020>;
> +          #clock-cells = <1>;
> +        };
> +      };
> +    };
> +
> +...
> --
> 2.20.1
>
Rob Herring (Arm) March 10, 2020, 9:17 p.m. UTC | #2 
On Wed,  4 Mar 2020 15:27:26 +0800, Chunyan Zhang wrote:
> From: Chunyan Zhang <chunyan.zhang@unisoc.com>
> 
> add a new bindings to describe sc9863a clock compatible string.
> 
> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
> ---
>  .../bindings/clock/sprd,sc9863a-clk.yaml      | 105 ++++++++++++++++++
>  1 file changed, 105 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml
> 

Reviewed-by: Rob Herring <robh@kernel.org>
Stephen Boyd March 21, 2020, 1:12 a.m. UTC | #3 
Quoting Chunyan Zhang (2020-03-03 23:27:26)
> From: Chunyan Zhang <chunyan.zhang@unisoc.com>
> 
> add a new bindings to describe sc9863a clock compatible string.
> 
> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
[...]
> +examples:
> +  - |
> +    ap_clk: clock-controller@21500000 {
> +      compatible = "sprd,sc9863a-ap-clk";
> +      reg = <0 0x21500000 0 0x1000>;
> +      clocks = <&ext_26m>, <&ext_32k>;
> +      clock-names = "ext-26m", "ext-32k";
> +      #clock-cells = <1>;
> +    };
> +
> +  - |
> +    soc {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      ap_ahb_regs: syscon@20e00000 {
> +        compatible = "sprd,sc9863a-glbregs", "syscon", "simple-mfd";
> +        reg = <0 0x20e00000 0 0x4000>;
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +        ranges = <0 0 0x20e00000 0x4000>;
> +
> +        apahb_gate: apahb-gate@0 {

Why do we need a node per "clk type" in the simple-mfd syscon? Can't we
register clks from the driver that matches the parent node and have that
driver know what sorts of clks are where? Sorry I haven't read the rest
of the patch series and I'm not aware if this came up before. If so,
please put details about this in the commit text.

> +          compatible = "sprd,sc9863a-apahb-gate";
> +          reg = <0x0 0x1020>;
> +          #clock-cells = <1>;
Chunyan Zhang March 22, 2020, 11 a.m. UTC | #4 
Hi Stephen,

On Sat, 21 Mar 2020 at 09:12, Stephen Boyd <sboyd@kernel.org> wrote:
>
> Quoting Chunyan Zhang (2020-03-03 23:27:26)
> > From: Chunyan Zhang <chunyan.zhang@unisoc.com>
> >
> > add a new bindings to describe sc9863a clock compatible string.
> >
> > Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
> [...]
> > +examples:
> > +  - |
> > +    ap_clk: clock-controller@21500000 {
> > +      compatible = "sprd,sc9863a-ap-clk";
> > +      reg = <0 0x21500000 0 0x1000>;
> > +      clocks = <&ext_26m>, <&ext_32k>;
> > +      clock-names = "ext-26m", "ext-32k";
> > +      #clock-cells = <1>;
> > +    };
> > +
> > +  - |
> > +    soc {
> > +      #address-cells = <2>;
> > +      #size-cells = <2>;
> > +
> > +      ap_ahb_regs: syscon@20e00000 {
> > +        compatible = "sprd,sc9863a-glbregs", "syscon", "simple-mfd";
> > +        reg = <0 0x20e00000 0 0x4000>;
> > +        #address-cells = <1>;
> > +        #size-cells = <1>;
> > +        ranges = <0 0 0x20e00000 0x4000>;
> > +
> > +        apahb_gate: apahb-gate@0 {
>
> Why do we need a node per "clk type" in the simple-mfd syscon? Can't we
> register clks from the driver that matches the parent node and have that
> driver know what sorts of clks are where? Sorry I haven't read the rest
> of the patch series and I'm not aware if this came up before. If so,
> please put details about this in the commit text.

Please see the change logs after v2 in cover-letter.

Rob suggested us to put some clocks under syscon nodes, since these
clocks have the same
physical address base with the syscon;

Thanks,
Chunyan

>
> > +          compatible = "sprd,sc9863a-apahb-gate";
> > +          reg = <0x0 0x1020>;
> > +          #clock-cells = <1>;
Stephen Boyd March 25, 2020, 2:03 a.m. UTC | #5 
Quoting Chunyan Zhang (2020-03-22 04:00:39)
> Hi Stephen,
> 
> On Sat, 21 Mar 2020 at 09:12, Stephen Boyd <sboyd@kernel.org> wrote:
> >
> > Quoting Chunyan Zhang (2020-03-03 23:27:26)
> > > From: Chunyan Zhang <chunyan.zhang@unisoc.com>
> > >
> > > add a new bindings to describe sc9863a clock compatible string.
> > >
> > > Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
> > [...]
> > > +examples:
> > > +  - |
> > > +    ap_clk: clock-controller@21500000 {
> > > +      compatible = "sprd,sc9863a-ap-clk";
> > > +      reg = <0 0x21500000 0 0x1000>;
> > > +      clocks = <&ext_26m>, <&ext_32k>;
> > > +      clock-names = "ext-26m", "ext-32k";
> > > +      #clock-cells = <1>;
> > > +    };
> > > +
> > > +  - |
> > > +    soc {
> > > +      #address-cells = <2>;
> > > +      #size-cells = <2>;
> > > +
> > > +      ap_ahb_regs: syscon@20e00000 {
> > > +        compatible = "sprd,sc9863a-glbregs", "syscon", "simple-mfd";
> > > +        reg = <0 0x20e00000 0 0x4000>;
> > > +        #address-cells = <1>;
> > > +        #size-cells = <1>;
> > > +        ranges = <0 0 0x20e00000 0x4000>;
> > > +
> > > +        apahb_gate: apahb-gate@0 {
> >
> > Why do we need a node per "clk type" in the simple-mfd syscon? Can't we
> > register clks from the driver that matches the parent node and have that
> > driver know what sorts of clks are where? Sorry I haven't read the rest
> > of the patch series and I'm not aware if this came up before. If so,
> > please put details about this in the commit text.
> 
> Please see the change logs after v2 in cover-letter.
> 
> Rob suggested us to put some clocks under syscon nodes, since these
> clocks have the same
> physical address base with the syscon;

Ok. I'll apply the series to clk-next then.
Chunyan Zhang March 25, 2020, 2:05 a.m. UTC | #6 
On Wed, 25 Mar 2020 at 10:03, Stephen Boyd <sboyd@kernel.org> wrote:
>
> Quoting Chunyan Zhang (2020-03-22 04:00:39)
> > Hi Stephen,
> >
> > On Sat, 21 Mar 2020 at 09:12, Stephen Boyd <sboyd@kernel.org> wrote:
> > >
> > > Quoting Chunyan Zhang (2020-03-03 23:27:26)
> > > > From: Chunyan Zhang <chunyan.zhang@unisoc.com>
> > > >
> > > > add a new bindings to describe sc9863a clock compatible string.
> > > >
> > > > Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
> > > [...]
> > > > +examples:
> > > > +  - |
> > > > +    ap_clk: clock-controller@21500000 {
> > > > +      compatible = "sprd,sc9863a-ap-clk";
> > > > +      reg = <0 0x21500000 0 0x1000>;
> > > > +      clocks = <&ext_26m>, <&ext_32k>;
> > > > +      clock-names = "ext-26m", "ext-32k";
> > > > +      #clock-cells = <1>;
> > > > +    };
> > > > +
> > > > +  - |
> > > > +    soc {
> > > > +      #address-cells = <2>;
> > > > +      #size-cells = <2>;
> > > > +
> > > > +      ap_ahb_regs: syscon@20e00000 {
> > > > +        compatible = "sprd,sc9863a-glbregs", "syscon", "simple-mfd";
> > > > +        reg = <0 0x20e00000 0 0x4000>;
> > > > +        #address-cells = <1>;
> > > > +        #size-cells = <1>;
> > > > +        ranges = <0 0 0x20e00000 0x4000>;
> > > > +
> > > > +        apahb_gate: apahb-gate@0 {
> > >
> > > Why do we need a node per "clk type" in the simple-mfd syscon? Can't we
> > > register clks from the driver that matches the parent node and have that
> > > driver know what sorts of clks are where? Sorry I haven't read the rest
> > > of the patch series and I'm not aware if this came up before. If so,
> > > please put details about this in the commit text.
> >
> > Please see the change logs after v2 in cover-letter.
> >
> > Rob suggested us to put some clocks under syscon nodes, since these
> > clocks have the same
> > physical address base with the syscon;
>
> Ok. I'll apply the series to clk-next then.

Thank you.

Chunyan
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml b/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml
new file mode 100644
index 000000000000..bb3a78d8105e
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.yaml
@@ -0,0 +1,105 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2019 Unisoc Inc.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/clock/sprd,sc9863a-clk.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: SC9863A 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,sc9863a-ap-clk
+      - sprd,sc9863a-aon-clk
+      - sprd,sc9863a-apahb-gate
+      - sprd,sc9863a-pmu-gate
+      - sprd,sc9863a-aonapb-gate
+      - sprd,sc9863a-pll
+      - sprd,sc9863a-mpll
+      - sprd,sc9863a-rpll
+      - sprd,sc9863a-dpll
+      - sprd,sc9863a-mm-gate
+      - sprd,sc9863a-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,sc9863a-ap-clk
+        - sprd,sc9863a-aon-clk
+then:
+  required:
+    - reg
+
+else:
+  description: |
+    Other SC9863a clock nodes should be the child of a syscon node in
+    which compatible string shoule be:
+            "sprd,sc9863a-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.
+
+examples:
+  - |
+    ap_clk: clock-controller@21500000 {
+      compatible = "sprd,sc9863a-ap-clk";
+      reg = <0 0x21500000 0 0x1000>;
+      clocks = <&ext_26m>, <&ext_32k>;
+      clock-names = "ext-26m", "ext-32k";
+      #clock-cells = <1>;
+    };
+
+  - |
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      ap_ahb_regs: syscon@20e00000 {
+        compatible = "sprd,sc9863a-glbregs", "syscon", "simple-mfd";
+        reg = <0 0x20e00000 0 0x4000>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges = <0 0 0x20e00000 0x4000>;
+
+        apahb_gate: apahb-gate@0 {
+          compatible = "sprd,sc9863a-apahb-gate";
+          reg = <0x0 0x1020>;
+          #clock-cells = <1>;
+        };
+      };
+    };
+
+...