diff mbox series

[4/5] misc: doc: Add binding doc for the zynqmp afi config driver

Message ID 20210420081153.17020-5-nava.manne@xilinx.com (mailing list archive)
State New, archived
Headers show
Series misc: Add afi config drivers support. | expand

Commit Message

Nava kishore Manne April 20, 2021, 8:11 a.m. UTC 
This patch adds the binding document for the zynqmp afi
config driver.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
---
 .../bindings/misc/xlnx,zynqmp-afi-fpga.yaml   | 136 ++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml

Comments

Rob Herring April 20, 2021, 1:58 p.m. UTC | #1 
On Tue, 20 Apr 2021 13:41:52 +0530, Nava kishore Manne wrote:
> This patch adds the binding document for the zynqmp afi
> config driver.
> 
> Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
> ---
>  .../bindings/misc/xlnx,zynqmp-afi-fpga.yaml   | 136 ++++++++++++++++++
>  1 file changed, 136 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.example.dt.yaml:0:0: /example-0/firmware/zynqmp-firmware: failed to match any schema with compatible: ['xlnx,zynqmp-firmware']
Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.example.dt.yaml:0:0: /example-0/firmware/zynqmp-firmware/afi: failed to match any schema with compatible: ['xlnx,afi-fpga']

See https://patchwork.ozlabs.org/patch/1468230

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.
Rob Herring April 20, 2021, 2:15 p.m. UTC | #2 
On Tue, Apr 20, 2021 at 01:41:52PM +0530, Nava kishore Manne wrote:
> This patch adds the binding document for the zynqmp afi
> config driver.

Bindings are for h/w blocks, not drivers.

> 
> Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
> ---
>  .../bindings/misc/xlnx,zynqmp-afi-fpga.yaml   | 136 ++++++++++++++++++
>  1 file changed, 136 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml
> 
> diff --git a/Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml b/Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml
> new file mode 100644
> index 000000000000..3ae22096b22a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml
> @@ -0,0 +1,136 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/misc/xlnx,zynqmp-afi-fpga.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Xilinx ZynqMP AFI interface Manager.
> +
> +maintainers:
> +  - Nava kishore Manne <nava.manne@xilinx.com>
> +
> +description: |
> +  The Zynq UltraScale+ MPSoC Processing System core provides access from PL
> +  masters to PS internal peripherals, and memory through AXI FIFO interface(AFI)
> +  interfaces.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - xlnx,zynqmp-afi-fpga
> +
> +  config-afi:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    description: |
> +      Pairs of  <regid value >
> +      The possible values of regid and values are
> +      regid - Regids of the register to be written possible values

If we wanted sequences of register accesses in DT, we'd have a 
generic mechanism to do so.

> +        0- AFIFM0_RDCTRL
> +        1- AFIFM0_WRCTRL
> +        2- AFIFM1_RDCTRL
> +        3- AFIFM1_WRCTRL
> +        4- AFIFM2_RDCTRL
> +        5- AFIFM2_WRCTRL
> +        6- AFIFM3_RDCTRL
> +        7- AFIFM3_WRCTRL
> +        8- AFIFM4_RDCTRL
> +        9- AFIFM4_WRCTRL
> +        10- AFIFM5_RDCTRL
> +        11- AFIFM5_WRCTRL
> +        12- AFIFM6_RDCTRL
> +        13- AFIFM6_WRCTRL
> +        14- AFIFS
> +        15- AFIFS_SS2
> +      value - Array of values to be written.
> +        for FM0_RDCTRL(0) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM0_WRCTRL(1) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM1_RDCTRL(2) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM1_WRCTRL(3) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM2_RDCTRL(4) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM2_WRCTRL(5) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM3_RDCTRL(6) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM3_WRCTRL(7) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM4_RDCTRL(8) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM4_WRCTRL(9) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM5_RDCTRL(10) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM5_WRCTRL(11) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM6_RDCTRL(12) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for FM6_WRCTRL(13) the valid values-fabric width
> +          2 - 32-bit
> +          1 - 64-bit
> +          0 - 128-bit
> +        for AFI_FA(14)
> +          dw_ss1_sel      bits (11:10)
> +          dw_ss0_sel      bits (9:8)
> +            0x0 - 32-bit AXI data width
> +            0x1 - 64-bit AXI data width
> +            0x2 - 128-bit AXI data width
> +            All other bits are 0 write ignored.
> +
> +        for AFI_FA(15)  selects for ss2AXI data width valid values
> +          0x000 - 32-bit AXI data width
> +          0x100 - 64-bit AXI data width
> +          0x200 - 128-bit AXI data width
> +    minItems: 1
> +    maxItems: 15
> +
> +required:
> +  - compatible
> +  - config-afi
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    firmware {
> +      zynqmp_firmware: zynqmp-firmware {
> +        compatible = "xlnx,zynqmp-firmware";
> +        method = "smc";
> +        afi0: afi {
> +          compatible = "xlnx,afi-fpga";
> +          config-afi = <0 2>, <1 1>, <2 1>;
> +        };
> +      };
> +    };
> +
> +...
> -- 
> 2.18.0
>
Nava kishore Manne April 29, 2021, 4:56 a.m. UTC | #3 
Hi Rob,

	Please find my response inline.

> -----Original Message-----
> From: Rob Herring <robh@kernel.org>
> Sent: Tuesday, April 20, 2021 7:29 PM
> To: Nava kishore Manne <navam@xilinx.com>
> Cc: robh+dt@kernel.org; Tejas Patel <tejasp@xlnx.xilinx.com>; Michal Simek
> <michals@xilinx.com>; Rajan Vaja <RAJANV@xilinx.com>; linux-arm-
> kernel@lists.infradead.org; Amit Sunil Dhamne <amitsuni@xilinx.com>;
> Dragan Cvetic <draganc@xilinx.com>; Derek Kiernan <dkiernan@xilinx.com>;
> Jolly Shah <JOLLYS@xilinx.com>; git <git@xilinx.com>;
> chinnikishore369@gmail.com; arnd@arndb.de;
> gregkh@linuxfoundation.org; linux-kernel@vger.kernel.org;
> devicetree@vger.kernel.org
> Subject: Re: [PATCH 4/5] misc: doc: Add binding doc for the zynqmp afi config
> driver
> 
> On Tue, 20 Apr 2021 13:41:52 +0530, Nava kishore Manne wrote:
> > This patch adds the binding document for the zynqmp afi config driver.
> >
> > Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
> > ---
> >  .../bindings/misc/xlnx,zynqmp-afi-fpga.yaml   | 136 ++++++++++++++++++
> >  1 file changed, 136 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml
> >
> 
> My bot found errors running 'make DT_CHECKER_FLAGS=-m
> dt_binding_check'
> on your patch (DT_CHECKER_FLAGS is new in v5.13):
> 

Thanks for the providing the update on the new features

> yamllint warnings/errors:
> 
> dtschema/dtc warnings/errors:
> Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-
> fpga.example.dt.yaml:0:0: /example-0/firmware/zynqmp-firmware: failed to
> match any schema with compatible: ['xlnx,zynqmp-firmware']
> Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-
> fpga.example.dt.yaml:0:0: /example-0/firmware/zynqmp-firmware/afi:
> failed to match any schema with compatible: ['xlnx,afi-fpga']
> 
> See https://patchwork.ozlabs.org/patch/1468230
> 
> This check can fail if there are any dependencies. The base for a patch series
> is generally the most recent rc1.
> 
> If you already ran 'make dt_binding_check' and didn't see the above error(s),
> then make sure 'yamllint' is installed and dt-schema is up to
> date:
> 
> pip3 install dtschema --upgrade
> 
> Please check and re-submit.

Will fix in v2.


Regards,
Navakishore.
Nava kishore Manne April 29, 2021, 5:39 a.m. UTC | #4 
Hi Rob,

	Thanks for the review.
Please find my response inline.

> -----Original Message-----
> From: Rob Herring <robh@kernel.org>
> Sent: Tuesday, April 20, 2021 7:45 PM
> To: Nava kishore Manne <navam@xilinx.com>
> Cc: Michal Simek <michals@xilinx.com>; Derek Kiernan
> <dkiernan@xilinx.com>; Dragan Cvetic <draganc@xilinx.com>;
> arnd@arndb.de; gregkh@linuxfoundation.org; Rajan Vaja
> <RAJANV@xilinx.com>; Jolly Shah <JOLLYS@xilinx.com>; Tejas Patel
> <tejasp@xlnx.xilinx.com>; Amit Sunil Dhamne <amitsuni@xilinx.com>;
> devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux-
> kernel@vger.kernel.org; chinnikishore369@gmail.com; git <git@xilinx.com>
> Subject: Re: [PATCH 4/5] misc: doc: Add binding doc for the zynqmp afi config
> driver
> 
> On Tue, Apr 20, 2021 at 01:41:52PM +0530, Nava kishore Manne wrote:
> > This patch adds the binding document for the zynqmp afi config driver.
> 
> Bindings are for h/w blocks, not drivers.
> 

This Binding are for h/w blocks (PS-PL bus width configurations)
For more info please refer the below links.
https://www.xilinx.com/support/documentation/user_guides/ug1085-zynq-ultrascale-trm.pdf (Page No: 54)
https://www.xilinx.com/support/documentation/ip_documentation/zynq_ultra_ps_e/v3_2/pg201-zynq-ultrascale-plus-processing-system.pdf (Page No: 42).

Please let me know if you need more info..

> >
> > Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
> > ---
> >  .../bindings/misc/xlnx,zynqmp-afi-fpga.yaml   | 136 ++++++++++++++++++
> >  1 file changed, 136 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml
> > b/Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml
> > new file mode 100644
> > index 000000000000..3ae22096b22a
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-
> fpga.yaml
> > @@ -0,0 +1,136 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/misc/xlnx,zynqmp-afi-fpga.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Xilinx ZynqMP AFI interface Manager.
> > +
> > +maintainers:
> > +  - Nava kishore Manne <nava.manne@xilinx.com>
> > +
> > +description: |
> > +  The Zynq UltraScale+ MPSoC Processing System core provides access
> > +from PL
> > +  masters to PS internal peripherals, and memory through AXI FIFO
> > +interface(AFI)
> > +  interfaces.
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - enum:
> > +          - xlnx,zynqmp-afi-fpga
> > +
> > +  config-afi:
> > +    $ref: /schemas/types.yaml#/definitions/uint32-array
> > +    description: |
> > +      Pairs of  <regid value >
> > +      The possible values of regid and values are
> > +      regid - Regids of the register to be written possible values
> 
> If we wanted sequences of register accesses in DT, we'd have a generic
> mechanism to do so.
> 

I will try to find a better way, will get back you on this


Regards,
Navakishore.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml b/Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml
new file mode 100644
index 000000000000..3ae22096b22a
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/xlnx,zynqmp-afi-fpga.yaml
@@ -0,0 +1,136 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/misc/xlnx,zynqmp-afi-fpga.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx ZynqMP AFI interface Manager.
+
+maintainers:
+  - Nava kishore Manne <nava.manne@xilinx.com>
+
+description: |
+  The Zynq UltraScale+ MPSoC Processing System core provides access from PL
+  masters to PS internal peripherals, and memory through AXI FIFO interface(AFI)
+  interfaces.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - xlnx,zynqmp-afi-fpga
+
+  config-afi:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description: |
+      Pairs of  <regid value >
+      The possible values of regid and values are
+      regid - Regids of the register to be written possible values
+        0- AFIFM0_RDCTRL
+        1- AFIFM0_WRCTRL
+        2- AFIFM1_RDCTRL
+        3- AFIFM1_WRCTRL
+        4- AFIFM2_RDCTRL
+        5- AFIFM2_WRCTRL
+        6- AFIFM3_RDCTRL
+        7- AFIFM3_WRCTRL
+        8- AFIFM4_RDCTRL
+        9- AFIFM4_WRCTRL
+        10- AFIFM5_RDCTRL
+        11- AFIFM5_WRCTRL
+        12- AFIFM6_RDCTRL
+        13- AFIFM6_WRCTRL
+        14- AFIFS
+        15- AFIFS_SS2
+      value - Array of values to be written.
+        for FM0_RDCTRL(0) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM0_WRCTRL(1) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM1_RDCTRL(2) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM1_WRCTRL(3) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM2_RDCTRL(4) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM2_WRCTRL(5) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM3_RDCTRL(6) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM3_WRCTRL(7) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM4_RDCTRL(8) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM4_WRCTRL(9) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM5_RDCTRL(10) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM5_WRCTRL(11) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM6_RDCTRL(12) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for FM6_WRCTRL(13) the valid values-fabric width
+          2 - 32-bit
+          1 - 64-bit
+          0 - 128-bit
+        for AFI_FA(14)
+          dw_ss1_sel      bits (11:10)
+          dw_ss0_sel      bits (9:8)
+            0x0 - 32-bit AXI data width
+            0x1 - 64-bit AXI data width
+            0x2 - 128-bit AXI data width
+            All other bits are 0 write ignored.
+
+        for AFI_FA(15)  selects for ss2AXI data width valid values
+          0x000 - 32-bit AXI data width
+          0x100 - 64-bit AXI data width
+          0x200 - 128-bit AXI data width
+    minItems: 1
+    maxItems: 15
+
+required:
+  - compatible
+  - config-afi
+
+additionalProperties: false
+
+examples:
+  - |
+    firmware {
+      zynqmp_firmware: zynqmp-firmware {
+        compatible = "xlnx,zynqmp-firmware";
+        method = "smc";
+        afi0: afi {
+          compatible = "xlnx,afi-fpga";
+          config-afi = <0 2>, <1 1>, <2 1>;
+        };
+      };
+    };
+
+...