[PATCH] arm64: dts: r8a7796: Add DRIF support

Simon Horman
2017-06-30T10:17:20Z

On Tue, Jun 27, 2017 at 01:54:38PM +0100, Ramesh Shanmugasundaram wrote:
> Adds the DRIF controller nodes for r8a7796.
>
> Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
> ---
> Hi Simon,
>
> This patch is based on renesas-devel-20170626-v4.12-rc7 tag.
> It is verified on M3 ES1.0. I also verified there are no regression issues
> with this addition.
>
> The driver[1] is pushed into the media_tree. The bindings[2] are ACK'ed
> by Geert & Rob and in the media_tree queue.
>
> [1] https://git.linuxtv.org/media_tree.git/commit/?id=7625ee981af166ddb569e2e6c0006e2af471326f
> [2] https://www.mail-archive.com/linux-renesas-soc at vger.kernel.org/msg15602.html
>
> Thanks,
> Ramesh.
>
> arch/arm64/boot/dts/renesas/r8a7796.dtsi | 120 +++++++++++++++++++++++++++++++
> 1 file changed, 120 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
> index 1f6710912045..df04d132a127 100644
> --- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
> @@ -639,6 +639,126 @@
> };
> };
>
> + drif00: rif at e6f40000 {
> + compatible = "renesas,r8a7796-drif",
> + "renesas,rcar-gen3-drif";
> + reg = <0 0xe6f40000 0 0x64>;
> + interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&cpg CPG_MOD 515>;
> + clock-names = "fck";
> + dmas = <&dmac1 0x20>, <&dmac2 0x20>;

The dmas property seems a little strange. I would have expected to allow
ether dmac1 or dmac2 to be used for both tx and rx:

dmas = <&dmac1 0x20>, <&dmac1 0x20>,
<&dmac2 0x20>, <&dmac2 0x20>;

> + dma-names = "rx", "rx";
> + power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
> + resets = <&cpg 515>;
> + renesas,bonding = <&drif01>;
> + status = "disabled";
> + };

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