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Date: Fri, 2 Apr 2021 10:00:38 -0700
From: Moritz Fischer <mdf@...nel.org>
To: Geert Uytterhoeven <geert+renesas@...der.be>
Cc: Moritz Fischer <mdf@...nel.org>, Tom Rix <trix@...hat.com>,
Rob Herring <robh+dt@...nel.org>, linux-fpga@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: fpga: fpga-region: Convert to sugar syntax
Hi Geert,
On Fri, Apr 02, 2021 at 01:57:49PM +0200, Geert Uytterhoeven wrote:
> Using overlay sugar syntax makes the DTS files easier to read (and
> write).
>
> While at it, fix two build issues:
> - "/dts-v1/" and "/plugin/" must be separate statements.
> - Add a missing closing curly brace.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> ---
> .../devicetree/bindings/fpga/fpga-region.txt | 187 ++++++++----------
> 1 file changed, 85 insertions(+), 102 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/fpga/fpga-region.txt b/Documentation/devicetree/bindings/fpga/fpga-region.txt
> index e811cf8250199b14..d787d57491a1c537 100644
> --- a/Documentation/devicetree/bindings/fpga/fpga-region.txt
> +++ b/Documentation/devicetree/bindings/fpga/fpga-region.txt
> @@ -245,36 +245,31 @@ Base tree contains:
>
> Overlay contains:
>
> -/dts-v1/ /plugin/;
> -/ {
> - fragment@0 {
> - target = <&fpga_region0>;
> - #address-cells = <1>;
> - #size-cells = <1>;
> - __overlay__ {
> - #address-cells = <1>;
> - #size-cells = <1>;
> -
> - firmware-name = "soc_system.rbf";
> - fpga-bridges = <&fpga_bridge1>;
> - ranges = <0x20000 0xff200000 0x100000>,
> - <0x0 0xc0000000 0x20000000>;
> -
> - gpio@...40 {
> - compatible = "altr,pio-1.0";
> - reg = <0x10040 0x20>;
> - altr,ngpio = <4>;
> - #gpio-cells = <2>;
> - clocks = <2>;
> - gpio-controller;
> - };
> -
> - onchip-memory {
> - device_type = "memory";
> - compatible = "altr,onchipmem-15.1";
> - reg = <0x0 0x10000>;
> - };
> - };
> +/dts-v1/;
> +/plugin/;
> +
> +&fpga_region0 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + firmware-name = "soc_system.rbf";
> + fpga-bridges = <&fpga_bridge1>;
> + ranges = <0x20000 0xff200000 0x100000>,
> + <0x0 0xc0000000 0x20000000>;
> +
> + gpio@...40 {
> + compatible = "altr,pio-1.0";
> + reg = <0x10040 0x20>;
> + altr,ngpio = <4>;
> + #gpio-cells = <2>;
> + clocks = <2>;
> + gpio-controller;
> + };
> +
> + onchip-memory {
> + device_type = "memory";
> + compatible = "altr,onchipmem-15.1";
> + reg = <0x0 0x10000>;
> };
> };
>
> @@ -371,25 +366,22 @@ Live Device Tree contains:
> };
>
> DT Overlay contains:
> -/dts-v1/ /plugin/;
> -/ {
> -fragment@0 {
> - target = <&fpga_region0>;
> +
> +/dts-v1/;
> +/plugin/;
> +
> +&fpga_region0 {
> #address-cells = <1>;
> #size-cells = <1>;
> - __overlay__ {
> - #address-cells = <1>;
> - #size-cells = <1>;
>
> - firmware-name = "zynq-gpio.bin";
> + firmware-name = "zynq-gpio.bin";
>
> - gpio1: gpio@...00000 {
> - compatible = "xlnx,xps-gpio-1.00.a";
> - reg = <0x40000000 0x10000>;
> - gpio-controller;
> - #gpio-cells = <0x2>;
> - xlnx,gpio-width= <0x6>;
> - };
> + gpio1: gpio@...00000 {
> + compatible = "xlnx,xps-gpio-1.00.a";
> + reg = <0x40000000 0x10000>;
> + gpio-controller;
> + #gpio-cells = <0x2>;
> + xlnx,gpio-width= <0x6>;
> };
> };
>
> @@ -402,41 +394,37 @@ This example programs the FPGA to have two regions that can later be partially
> configured. Each region has its own bridge in the FPGA fabric.
>
> DT Overlay contains:
> -/dts-v1/ /plugin/;
> -/ {
> - fragment@0 {
> - target = <&fpga_region0>;
> - #address-cells = <1>;
> - #size-cells = <1>;
> - __overlay__ {
> - #address-cells = <1>;
> - #size-cells = <1>;
> -
> - firmware-name = "base.rbf";
> -
> - fpga-bridge@...0 {
> - compatible = "altr,freeze-bridge-controller";
> - reg = <0x4400 0x10>;
> -
> - fpga_region1: fpga-region1 {
> - compatible = "fpga-region";
> - #address-cells = <0x1>;
> - #size-cells = <0x1>;
> - ranges;
> - };
> - };
> -
> - fpga-bridge@...0 {
> - compatible = "altr,freeze-bridge-controller";
> - reg = <0x4420 0x10>;
> -
> - fpga_region2: fpga-region2 {
> - compatible = "fpga-region";
> - #address-cells = <0x1>;
> - #size-cells = <0x1>;
> - ranges;
> - };
> - };
> +
> +/dts-v1/;
> +/plugin/;
> +
> +&fpga_region0 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + firmware-name = "base.rbf";
> +
> + fpga-bridge@...0 {
> + compatible = "altr,freeze-bridge-controller";
> + reg = <0x4400 0x10>;
> +
> + fpga_region1: fpga-region1 {
> + compatible = "fpga-region";
> + #address-cells = <0x1>;
> + #size-cells = <0x1>;
> + ranges;
> + };
> + };
> +
> + fpga-bridge@...0 {
> + compatible = "altr,freeze-bridge-controller";
> + reg = <0x4420 0x10>;
> +
> + fpga_region2: fpga-region2 {
> + compatible = "fpga-region";
> + #address-cells = <0x1>;
> + #size-cells = <0x1>;
> + ranges;
> };
> };
> };
> @@ -451,28 +439,23 @@ differences are that the FPGA is partially reconfigured due to the
> "partial-fpga-config" boolean and the only bridge that is controlled during
> programming is the FPGA based bridge of fpga_region1.
>
> -/dts-v1/ /plugin/;
> -/ {
> - fragment@0 {
> - target = <&fpga_region1>;
> - #address-cells = <1>;
> - #size-cells = <1>;
> - __overlay__ {
> - #address-cells = <1>;
> - #size-cells = <1>;
> -
> - firmware-name = "soc_image2.rbf";
> - partial-fpga-config;
> -
> - gpio@...40 {
> - compatible = "altr,pio-1.0";
> - reg = <0x10040 0x20>;
> - clocks = <0x2>;
> - altr,ngpio = <0x4>;
> - #gpio-cells = <0x2>;
> - gpio-controller;
> - };
> - };
> +/dts-v1/;
> +/plugin/;
> +
> +&fpga_region1 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + firmware-name = "soc_image2.rbf";
> + partial-fpga-config;
> +
> + gpio@...40 {
> + compatible = "altr,pio-1.0";
> + reg = <0x10040 0x20>;
> + clocks = <0x2>;
> + altr,ngpio = <0x4>;
> + #gpio-cells = <0x2>;
> + gpio-controller;
> };
> };
>
> --
> 2.25.1
>
Applied to for-next,
Thanks
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