A unconfirmed hardware bug prevents channel 0 and 15 to be used by the
DMAC together with the IPMMU. The DMAC driver will disable the channels
reducing the effective number of channels to 14 per DMAC.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
arch/arm/boot/dts/r8a7791.dtsi | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
index c6bee4a..341c460 100644
--- a/arch/arm/boot/dts/r8a7791.dtsi
+++ b/arch/arm/boot/dts/r8a7791.dtsi
@@ -283,6 +283,21 @@
power-domains = <&cpg_clocks>;
#dma-cells = <1>;
dma-channels = <15>;
+ iommus = <&ipmmu_ds 0>,
+ <&ipmmu_ds 1>,
+ <&ipmmu_ds 2>,
+ <&ipmmu_ds 3>,
+ <&ipmmu_ds 4>,
+ <&ipmmu_ds 5>,
+ <&ipmmu_ds 6>,
+ <&ipmmu_ds 7>,
+ <&ipmmu_ds 8>,
+ <&ipmmu_ds 9>,
+ <&ipmmu_ds 10>,
+ <&ipmmu_ds 11>,
+ <&ipmmu_ds 12>,
+ <&ipmmu_ds 13>,
+ <&ipmmu_ds 14>;
};
dmac1: dma-controller@e6720000 {
@@ -314,6 +329,21 @@
power-domains = <&cpg_clocks>;
#dma-cells = <1>;
dma-channels = <15>;
+ iommus = <&ipmmu_ds 15>,
+ <&ipmmu_ds 16>,
+ <&ipmmu_ds 17>,
+ <&ipmmu_ds 18>,
+ <&ipmmu_ds 19>,
+ <&ipmmu_ds 20>,
+ <&ipmmu_ds 21>,
+ <&ipmmu_ds 22>,
+ <&ipmmu_ds 23>,
+ <&ipmmu_ds 24>,
+ <&ipmmu_ds 25>,
+ <&ipmmu_ds 26>,
+ <&ipmmu_ds 27>,
+ <&ipmmu_ds 28>,
+ <&ipmmu_ds 29>;
};
audma0: dma-controller@ec700000 {
--
2.7.2
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