On Tue, Mar 20, 2018 at 04:51:07PM +0900, Magnus Damm wrote:
> From: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
>
> Judging by "R-Car-Gen3-rev0.80" IPMMU IMSSTR register documentation
> for [R-Car V3M] the DS1 bit field should be bit 0.
>
> Update the ipmmu-main property to make it match the data sheet.
Thanks, I have confirmed this. Apologies for this error.
AFIK this IP block is currently unused, I wonder if it,
ipmmu_mm and ipmmu_rt should have status = "disabled" added.
For now I have applied this change to v4.18 with the following tag:
Fixes: ce3b52a1595b ("arm64: dts: renesas: r8a77970: Add IPMMU device
nodes")
> Signed-off-by: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
> ---
> Based on top of renesas-drivers-2018-03-13-v4.16-rc5
>
> arch/arm64/boot/dts/renesas/r8a77970.dtsi | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> --- 0001/arch/arm64/boot/dts/renesas/r8a77970.dtsi
> +++ work/arch/arm64/boot/dts/renesas/r8a77970.dtsi 2018-03-20 15:26:18.250607110 +0900
> @@ -160,7 +160,7 @@
> ipmmu_ds1: mmu@e7740000 {
> compatible = "renesas,ipmmu-r8a77970";
> reg = <0 0xe7740000 0 0x1000>;
> - renesas,ipmmu-main = <&ipmmu_mm 1>;
> + renesas,ipmmu-main = <&ipmmu_mm 0>;
> power-domains = <&sysc R8A77970_PD_ALWAYS_ON>;
> #iommu-cells = <1>;
> };
>
