Hi Geert-san,
> From: Geert Uytterhoeven, Sent: Thursday, August 31, 2023 10:13 PM
>
> Hi Shimoda-san,
>
> On Fri, Aug 25, 2023 at 3:18 PM Yoshihiro Shimoda
> <yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote:
> > Document bindings for Renesas R-Car Gen4 and R-Car S4-8 (R8A779F0)
> > PCIe host module.
> >
> > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> > Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
> > Reviewed-by: Serge Semin <fancer.lancer@xxxxxxxxx>
>
> Thanks for your patch!
Thank you for your review!
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml
> > @@ -0,0 +1,123 @@
>
> > + resets:
> > + maxItems: 1
> > +
> > + resets-names:
>
> reset-names
Oops! I'll fix it.
> > + items:
> > + - const: pwr
> > +
> > + max-link-speed:
> > + maximum: 4
> > +
> > + num-lanes:
> > + maximum: 4
> > +
> > +required:
> > + - compatible
> > + - reg
>
> Missing "reg-names".
I got it. I'll add it.
> > + - interrupts
> > + - clocks
> > + - clock-names
> > + - power-domains
> > + - resets
> > + - reset-names
> > +
> > +unevaluatedProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/clock/r8a779f0-cpg-mssr.h>
> > + #include <dt-bindings/interrupt-controller/arm-gic.h>
> > + #include <dt-bindings/power/r8a779f0-sysc.h>
> > +
> > + soc {
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > +
> > + pcie: pcie@e65d0000 {
> > + compatible = "renesas,r8a779f0-pcie", "renesas,rcar-gen4-pcie";
> > + reg = <0 0xe65d0000 0 0x1000>, <0 0xe65d2000 0 0x0800>,
> > + <0 0xe65d3000 0 0x2000>, <0 0xe65d5000 0 0x1200>,
> > + <0 0xe65d6200 0 0x0e00>, <0 0xfe000000 0 0x400000>;
>
> The lenght "0x0e00" does not match your DTS patch
<snip URL>
It seemed my DTS patch was not correct. Also, as you mentioned on the other email [1],
I should add a reg for "phy". I'll revise the dt-bindings doc.
https://lore.kernel.org/all/CAMuHMdWrrwwY=8bySDVYc9jD9zdKbeNytDVUSm7vci6LN=g6Qg@xxxxxxxxxxxxxx/
>
> > + reg-names = "dbi", "dbi2", "atu", "dma", "app", "config";
> > + #address-cells = <3>;
> > + #size-cells = <2>;
> > + bus-range = <0x00 0xff>;
> > + device_type = "pci";
> > + ranges = <0x01000000 0 0x00000000 0 0xfe000000 0 0x00400000>,
> > + <0x02000000 0 0x30000000 0 0x30000000 0 0x10000000>;
> > + dma-ranges = <0x42000000 0 0x00000000 0 0x00000000 1 0x00000000>;
> > + interrupts = <GIC_SPI 416 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 417 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 418 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 422 IRQ_TYPE_LEVEL_HIGH>;
>
> What about SPI 419, 420, 421?
These SPI interrupts cannot match the Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml.
Also, I cannot describe the detail of these SPI interrupts behavior because of the datasheet
doesn't mention the detail... So, I didn't describe them.
> > + interrupt-names = "msi", "dma", "sft_ce", "app";
> > + #interrupt-cells = <1>;
> > + interrupt-map-mask = <0 0 0 7>;
> > + interrupt-map = <0 0 0 1 &gic GIC_SPI 416 IRQ_TYPE_LEVEL_HIGH>,
> > + <0 0 0 2 &gic GIC_SPI 416 IRQ_TYPE_LEVEL_HIGH>,
> > + <0 0 0 3 &gic GIC_SPI 416 IRQ_TYPE_LEVEL_HIGH>,
> > + <0 0 0 4 &gic GIC_SPI 416 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&cpg CPG_MOD 624>, <&clkref>;
> > + clock-names = "core", "ref";
> > + power-domains = <&sysc R8A779F0_PD_ALWAYS_ON>;
> > + resets = <&cpg 624>;
> > + reset-names = "pwr";
> > + num-lanes = <2>;
> > + snps,enable-cdm-check;
> > + max-link-speed = <4>;
> > + };
> > + };
>
> BTW, I think it would be good to make the order of the properties and
> in the example match between the host and endpoint bindings, to make
> the output of
> "diff Documentation/devicetree/bindings/pci/rcar-gen4-pci-{host,ep}.yaml"
> as small as possible.
Thank you for your suggestion! I'll revise the dt-bindings doc.
Best regards,
Yoshihiro Shimoda
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
>
>
> > + - interrupts
> > + - clocks
> > + - clock-names
> > + - power-domains
> > + - resets
> > + - reset-names
> > +
> > +unevaluatedProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/clock/r8a779f0-cpg-mssr.h>
> > + #include <dt-bindings/interrupt-controller/arm-gic.h>
> > + #include <dt-bindings/power/r8a779f0-sysc.h>
> > +
> > + soc {
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > +
> > + pcie: pcie@e65d0000 {
> > + compatible = "renesas,r8a779f0-pcie", "renesas,rcar-gen4-pcie";
> > + reg = <0 0xe65d0000 0 0x1000>, <0 0xe65d2000 0 0x0800>,
> > + <0 0xe65d3000 0 0x2000>, <0 0xe65d5000 0 0x1200>,
> > + <0 0xe65d6200 0 0x0e00>, <0 0xfe000000 0 0x400000>;
> > + reg-names = "dbi", "dbi2", "atu", "dma", "app", "config";
> > + #address-cells = <3>;
> > + #size-cells = <2>;
> > + bus-range = <0x00 0xff>;
> > + device_type = "pci";
> > + ranges = <0x01000000 0 0x00000000 0 0xfe000000 0 0x00400000>,
> > + <0x02000000 0 0x30000000 0 0x30000000 0 0x10000000>;
> > + dma-ranges = <0x42000000 0 0x00000000 0 0x00000000 1 0x00000000>;
> > + interrupts = <GIC_SPI 416 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 417 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 418 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 422 IRQ_TYPE_LEVEL_HIGH>;
> > + interrupt-names = "msi", "dma", "sft_ce", "app";
> > + #interrupt-cells = <1>;
> > + interrupt-map-mask = <0 0 0 7>;
> > + interrupt-map = <0 0 0 1 &gic GIC_SPI 416 IRQ_TYPE_LEVEL_HIGH>,
> > + <0 0 0 2 &gic GIC_SPI 416 IRQ_TYPE_LEVEL_HIGH>,
> > + <0 0 0 3 &gic GIC_SPI 416 IRQ_TYPE_LEVEL_HIGH>,
> > + <0 0 0 4 &gic GIC_SPI 416 IRQ_TYPE_LEVEL_HIGH>;
> > + clocks = <&cpg CPG_MOD 624>, <&clkref>;
> > + clock-names = "core", "ref";
> > + power-domains = <&sysc R8A779F0_PD_ALWAYS_ON>;
> > + resets = <&cpg 624>;
> > + reset-names = "pwr";
> > + num-lanes = <2>;
> > + snps,enable-cdm-check;
> > + max-link-speed = <4>;
> > + };
> > + };
> > --
> > 2.25.1
> >
>
>
> --
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
