linux-kernel - Re: [PATCH 1/6] arm64: dts: renesas: r8a779a0: add & update SCIF nodes

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Date:   Tue, 5 Jan 2021 19:06:31 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Linh Phung <linh.phung.jy@...esas.com>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/6] arm64: dts: renesas: r8a779a0: add & update SCIF nodes

Hi Wolfram,

On Mon, Dec 28, 2020 at 12:27 PM Wolfram Sang
<wsa+renesas@...g-engineering.com> wrote:

Missing "From: Linh Phung <linh.phung.jy@...esas.com>"?

> This is the result of multiple patches taken from the BSP, combined,
> rebased, and properly sorted. SCIF0 gets DMA properties, other SCIFs are
> entirely new.
>
> Signed-off-by: Linh Phung <linh.phung.jy@...esas.com>

> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>

Thanks for your patch!

> --- a/arch/arm64/boot/dts/renesas/r8a779a0.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a779a0.dtsi
> @@ -656,11 +656,61 @@ scif0: serial@...60000 {
>                                  <&cpg CPG_CORE R8A779A0_CLK_S1D2>,
>                                  <&scif_clk>;
>                         clock-names = "fck", "brg_int", "scif_clk";
> +                       dmas = <&dmac1 0x51>, <&dmac1 0x50>;
> +                       dma-names = "tx", "rx";

It may be prudent to leave out the DMA properties until we can
validate DMA operation.

>                         power-domains = <&sysc R8A779A0_PD_ALWAYS_ON>;
>                         resets = <&cpg 702>;
>                         status = "disabled";
>                 };
>
> +               scif1: serial@...68000 {
> +                       compatible = "renesas,scif-r8a779a0",
> +                                    "renesas,rcar-gen3-scif", "renesas,scif";
> +                       reg = <0 0xe6e68000 0 64>;
> +                       interrupts = <GIC_SPI 252 IRQ_TYPE_LEVEL_HIGH>;
> +                       clocks = <&cpg CPG_MOD 703>,
> +                                <&cpg CPG_CORE R8A779A0_CLK_S1D2>,
> +                                <&scif_clk>;
> +                       clock-names = "fck", "brg_int", "scif_clk";
> +                       dmas = <&dmac1 0x53>, <&dmac1 0x52>;
> +                       dma-names = "tx", "rx";
> +                       power-domains = <&sysc R8A779A0_PD_ALWAYS_ON>;
> +                       resets = <&cpg 703>;
> +                       status = "disabled";
> +               };
> +
> +               scif4: serial@...40000 {
> +                       compatible = "renesas,scif-r8a779a0",
> +                                    "renesas,rcar-gen3-scif", "renesas,scif";
> +                       reg = <0 0xe6c40000 0 64>;
> +                       interrupts = <GIC_SPI 254 IRQ_TYPE_LEVEL_HIGH>;
> +                       clocks = <&cpg CPG_MOD 705>,
> +                                <&cpg CPG_CORE R8A779A0_CLK_S1D2>,
> +                                <&scif_clk>;
> +                       clock-names = "fck", "brg_int", "scif_clk";
> +                       dmas = <&dmac1 0x59>, <&dmac1 0x58>;
> +                       dma-names = "tx", "rx";
> +                       power-domains = <&sysc R8A779A0_PD_ALWAYS_ON>;
> +                       resets = <&cpg 705>;
> +                       status = "disabled";
> +               };
> +
> +               scif3: serial@...50000 {

Please move scif3 before scif4.

> +                       compatible = "renesas,scif-r8a779a0",
> +                                    "renesas,rcar-gen3-scif", "renesas,scif";
> +                       reg = <0 0xe6c50000 0 64>;
> +                       interrupts = <GIC_SPI 253 IRQ_TYPE_LEVEL_HIGH>;
> +                       clocks = <&cpg CPG_MOD 704>,
> +                                <&cpg CPG_CORE R8A779A0_CLK_S1D2>,
> +                                <&scif_clk>;
> +                       clock-names = "fck", "brg_int", "scif_clk";
> +                       dmas = <&dmac1 0x57>, <&dmac1 0x56>;
> +                       dma-names = "tx", "rx";
> +                       power-domains = <&sysc R8A779A0_PD_ALWAYS_ON>;
> +                       resets = <&cpg 704>;
> +                       status = "disabled";
> +               };
> +

With the above fixed:
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

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