On Thu, May 11, 2017 at 01:58:52PM +0200, Geert Uytterhoeven wrote:
> Update r8a7795.dtsi so it corresponds to R-Car H3 ES2.0 or later:
>   - The following devices no longer exist on ES2.0, and are thus removed:
>     fcpf2, fcpvd3, fcpvi2, fdp1-2, usb3-if1, vspd3, vspi2.
>   - The DU <-> VSPD topology is different on ES2.0, hence remove the
>     "compatible" and "vsps" properties from the DU node until the driver
>     can handle this.
> 
> Move support for the ES1.x revision of the R-Car H3 SoC into a
> separate file.  To avoid duplication, r8a7795-es1.dtsi includes
> r8a7795.dtsi, add adds/removes/overrides device nodes and properties
> where needed.

I think the above should be re-worded given your explanation below the
scissors that no deletion or overriding occurs.

> 
> Switch r8a7795-salvator-x.dts and r8a7795-h3ulcb.dts from r8a7795.dtsi
> to r8a7795-es1.dtsi to preserve compatibility.
> 
> Signed-off-by: Geert Uytterhoeven <[email protected]>
> ---
> While currently r8a7795-es1.dtsi only adds device nodes, removal of
> devices nodes and properties can be implemented using the /delete-node/
> and /delete-property/ keywords, as shown below:
> 
>       &soc {
>               /delete-node/ <name>@<addr>;
>       };
> 
>       &<label> {
>               /delete-property/ <prop>;
>       };

I would be interested to also see an example of an override and
for the examples to be included in the changelog itself.

> 
> v3:
>   - Rebase on top of common Salvator-X board support extraction,
>   - Remove the "compatible" property from the DU node in r8a7795.dtsi,
>     in addition to the "vsps" property,
> 
> v2:
>   - Use a separate file for ES1.x instead of for ES2.0, so r8a7795.dtsi
>     always corresponds to the latest SoC revision,
>   - Add a dash between SoC part number and revision, for compatibility
>     with the BSP,
>   - Enhance the hardware description from basic support to everything
>     already supported on ES1.x (except for DU due VSP),
>   - Let r8a7795-es1.dtsi include r8a7795.dtsi.
> ---
>  arch/arm64/boot/dts/renesas/r8a7795-es1.dtsi       | 84 
> ++++++++++++++++++++++
>  arch/arm64/boot/dts/renesas/r8a7795-h3ulcb.dts     |  4 +-
>  arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts |  4 +-
>  arch/arm64/boot/dts/renesas/r8a7795.dtsi           | 71 +-----------------
>  4 files changed, 89 insertions(+), 74 deletions(-)
>  create mode 100644 arch/arm64/boot/dts/renesas/r8a7795-es1.dtsi
> 
> diff --git a/arch/arm64/boot/dts/renesas/r8a7795-es1.dtsi 
> b/arch/arm64/boot/dts/renesas/r8a7795-es1.dtsi
> new file mode 100644
> index 0000000000000000..a0ba7bd21ea3aa18
> --- /dev/null
> +++ b/arch/arm64/boot/dts/renesas/r8a7795-es1.dtsi
> @@ -0,0 +1,84 @@
> +/*
> + * Device Tree Source for the r8a7795 ES1.x SoC
> + *
> + * Copyright (C) 2015 Renesas Electronics Corp.
> + *
> + * This file is licensed under the terms of the GNU General Public License
> + * version 2.  This program is licensed "as is" without any warranty of any
> + * kind, whether express or implied.
> + */
> +
> +#include "r8a7795.dtsi"
> +
> +&soc {
> +     xhci1: usb@ee0400000 {
> +             compatible = "renesas,xhci-r8a7795", "renesas,rcar-gen3-xhci";
> +             reg = <0 0xee040000 0 0xc00>;
> +             interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
> +             clocks = <&cpg CPG_MOD 327>;
> +             power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
> +             resets = <&cpg 327>;
> +             status = "disabled";
> +     };
> +
> +     fcpf2: fcp@fe952000 {
> +             compatible = "renesas,fcpf";
> +             reg = <0 0xfe952000 0 0x200>;
> +             clocks = <&cpg CPG_MOD 613>;
> +             power-domains = <&sysc R8A7795_PD_A3VP>;
> +             resets = <&cpg 613>;
> +     };
> +
> +     vspi2: vsp@fe9c0000 {
> +             compatible = "renesas,vsp2";
> +             reg = <0 0xfe9c0000 0 0x8000>;
> +             interrupts = <GIC_SPI 446 IRQ_TYPE_LEVEL_HIGH>;
> +             clocks = <&cpg CPG_MOD 629>;
> +             power-domains = <&sysc R8A7795_PD_A3VP>;
> +             resets = <&cpg 629>;
> +
> +             renesas,fcp = <&fcpvi2>;
> +     };
> +
> +     fcpvi2: fcp@fe9cf000 {
> +             compatible = "renesas,fcpv";
> +             reg = <0 0xfe9cf000 0 0x200>;
> +             clocks = <&cpg CPG_MOD 609>;
> +             power-domains = <&sysc R8A7795_PD_A3VP>;
> +             resets = <&cpg 609>;
> +     };
> +
> +     vspd3: vsp@fea38000 {
> +             compatible = "renesas,vsp2";
> +             reg = <0 0xfea38000 0 0x4000>;
> +             interrupts = <GIC_SPI 469 IRQ_TYPE_LEVEL_HIGH>;
> +             clocks = <&cpg CPG_MOD 620>;
> +             power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
> +             resets = <&cpg 620>;
> +
> +             renesas,fcp = <&fcpvd3>;
> +     };
> +
> +     fcpvd3: fcp@fea3f000 {
> +             compatible = "renesas,fcpv";
> +             reg = <0 0xfea3f000 0 0x200>;
> +             clocks = <&cpg CPG_MOD 600>;
> +             power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
> +             resets = <&cpg 600>;
> +     };
> +
> +     fdp1@fe948000 {
> +             compatible = "renesas,fdp1";
> +             reg = <0 0xfe948000 0 0x2400>;
> +             interrupts = <GIC_SPI 264 IRQ_TYPE_LEVEL_HIGH>;
> +             clocks = <&cpg CPG_MOD 117>;
> +             power-domains = <&sysc R8A7795_PD_A3VP>;
> +             resets = <&cpg 117>;
> +             renesas,fcp = <&fcpf2>;
> +     };
> +};
> +
> +&du {
> +     compatible = "renesas,du-r8a7795";
> +     vsps = <&vspd0 &vspd1 &vspd2 &vspd3>;
> +};
> diff --git a/arch/arm64/boot/dts/renesas/r8a7795-h3ulcb.dts 
> b/arch/arm64/boot/dts/renesas/r8a7795-h3ulcb.dts
> index a1fbf0ab8ad8e425..95fe207cb6a3fd2f 100644
> --- a/arch/arm64/boot/dts/renesas/r8a7795-h3ulcb.dts
> +++ b/arch/arm64/boot/dts/renesas/r8a7795-h3ulcb.dts
> @@ -12,11 +12,11 @@
>  #define CPG_AUDIO_CLK_I              R8A7795_CLK_S0D4
>  
>  /dts-v1/;
> -#include "r8a7795.dtsi"
> +#include "r8a7795-es1.dtsi"
>  #include "ulcb.dtsi"
>  
>  / {
> -     model = "Renesas H3ULCB board based on r8a7795";
> +     model = "Renesas H3ULCB board based on r8a7795 ES1.x";
>       compatible = "renesas,h3ulcb", "renesas,r8a7795";
>  
>       memory@48000000 {
> diff --git a/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts 
> b/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
> index 52fce67df3413f1f..be5b2e966ea1700e 100644
> --- a/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
> +++ b/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
> @@ -11,11 +11,11 @@
>  #define CPG_AUDIO_CLK_I              R8A7795_CLK_S0D4
>  
>  /dts-v1/;
> -#include "r8a7795.dtsi"
> +#include "r8a7795-es1.dtsi"
>  #include "salvator-x.dtsi"
>  
>  / {
> -     model = "Renesas Salvator-X board based on r8a7795";
> +     model = "Renesas Salvator-X board based on r8a7795 ES1.x";
>       compatible = "renesas,salvator-x", "renesas,r8a7795";
>  
>       memory@48000000 {
> diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi 
> b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> index 7d87dff70ac84c40..e2c447cc12fe7f3a 100644
> --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> @@ -182,7 +182,7 @@
>               clock-frequency = <0>;
>       };
>  
> -     soc {
> +     soc: soc {
>               compatible = "simple-bus";
>               interrupt-parent = <&gic>;
>  
> @@ -1274,16 +1274,6 @@
>                       status = "disabled";
>               };
>  
> -             xhci1: usb@ee0400000 {
> -                     compatible = "renesas,xhci-r8a7795", 
> "renesas,rcar-gen3-xhci";
> -                     reg = <0 0xee040000 0 0xc00>;
> -                     interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
> -                     clocks = <&cpg CPG_MOD 327>;
> -                     power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
> -                     resets = <&cpg 327>;
> -                     status = "disabled";
> -             };
> -
>               usb_dmac0: dma-controller@e65a0000 {
>                       compatible = "renesas,r8a7795-usb-dmac",
>                                    "renesas,usb-dmac";
> @@ -1568,14 +1558,6 @@
>                       resets = <&cpg 614>;
>               };
>  
> -             fcpf2: fcp@fe952000 {
> -                     compatible = "renesas,fcpf";
> -                     reg = <0 0xfe952000 0 0x200>;
> -                     clocks = <&cpg CPG_MOD 613>;
> -                     power-domains = <&sysc R8A7795_PD_A3VP>;
> -                     resets = <&cpg 613>;
> -             };
> -
>               vspbd: vsp@fe960000 {
>                       compatible = "renesas,vsp2";
>                       reg = <0 0xfe960000 0 0x8000>;
> @@ -1633,25 +1615,6 @@
>                       resets = <&cpg 610>;
>               };
>  
> -             vspi2: vsp@fe9c0000 {
> -                     compatible = "renesas,vsp2";
> -                     reg = <0 0xfe9c0000 0 0x8000>;
> -                     interrupts = <GIC_SPI 446 IRQ_TYPE_LEVEL_HIGH>;
> -                     clocks = <&cpg CPG_MOD 629>;
> -                     power-domains = <&sysc R8A7795_PD_A3VP>;
> -                     resets = <&cpg 629>;
> -
> -                     renesas,fcp = <&fcpvi2>;
> -             };
> -
> -             fcpvi2: fcp@fe9cf000 {
> -                     compatible = "renesas,fcpv";
> -                     reg = <0 0xfe9cf000 0 0x200>;
> -                     clocks = <&cpg CPG_MOD 609>;
> -                     power-domains = <&sysc R8A7795_PD_A3VP>;
> -                     resets = <&cpg 609>;
> -             };
> -
>               vspd0: vsp@fea20000 {
>                       compatible = "renesas,vsp2";
>                       reg = <0 0xfea20000 0 0x4000>;
> @@ -1709,25 +1672,6 @@
>                       resets = <&cpg 601>;
>               };
>  
> -             vspd3: vsp@fea38000 {
> -                     compatible = "renesas,vsp2";
> -                     reg = <0 0xfea38000 0 0x4000>;
> -                     interrupts = <GIC_SPI 469 IRQ_TYPE_LEVEL_HIGH>;
> -                     clocks = <&cpg CPG_MOD 620>;
> -                     power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
> -                     resets = <&cpg 620>;
> -
> -                     renesas,fcp = <&fcpvd3>;
> -             };
> -
> -             fcpvd3: fcp@fea3f000 {
> -                     compatible = "renesas,fcpv";
> -                     reg = <0 0xfea3f000 0 0x200>;
> -                     clocks = <&cpg CPG_MOD 600>;
> -                     power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
> -                     resets = <&cpg 600>;
> -             };
> -
>               fdp1@fe940000 {
>                       compatible = "renesas,fdp1";
>                       reg = <0 0xfe940000 0 0x2400>;
> @@ -1748,18 +1692,7 @@
>                       renesas,fcp = <&fcpf1>;
>               };
>  
> -             fdp1@fe948000 {
> -                     compatible = "renesas,fdp1";
> -                     reg = <0 0xfe948000 0 0x2400>;
> -                     interrupts = <GIC_SPI 264 IRQ_TYPE_LEVEL_HIGH>;
> -                     clocks = <&cpg CPG_MOD 117>;
> -                     power-domains = <&sysc R8A7795_PD_A3VP>;
> -                     resets = <&cpg 117>;
> -                     renesas,fcp = <&fcpf2>;
> -             };
> -
>               du: display@feb00000 {
> -                     compatible = "renesas,du-r8a7795";
>                       reg = <0 0xfeb00000 0 0x80000>,
>                             <0 0xfeb90000 0 0x14>;
>                       reg-names = "du", "lvds.0";
> @@ -1775,8 +1708,6 @@
>                       clock-names = "du.0", "du.1", "du.2", "du.3", "lvds.0";
>                       status = "disabled";
>  
> -                     vsps = <&vspd0 &vspd1 &vspd2 &vspd3>;
> -
>                       ports {
>                               #address-cells = <1>;
>                               #size-cells = <0>;
> -- 
> 2.7.4
> 

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