On 2021-08-07 11:45, Peng Fan (OSS) wrote:
From: Peng Fan <peng.fan@xxxxxxx>
i.MX8QM has an iommu unit: SMMU-V2(mmu-500), add it.
Given CONFIG_ARM_SMMU_DISABLE_BYPASS_BY_DEFAULT, you may want to add
this in a disabled state until you've filled in all the "iommus"
properties for the client devices. Otherwise, be prepared to hear from
people reporting issues bisected to this patch ;)
Robin.
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
arch/arm64/boot/dts/freescale/imx8qm.dtsi | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8qm.dtsi b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
index aebbe2b84aa1..b8ffd5be6a3e 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
@@ -165,6 +165,22 @@ iomuxc: pinctrl {
};
+ smmu: iommu@51400000 {
+ compatible = "arm,mmu-500";
+ reg = <0 0x51400000 0 0x40000>;
+ #iommu-cells = <2>;
+ #global-interrupts = <1>;
+ interrupts = <0 32 4>, <0 32 4>, <0 32 4>, <0 32 4>,
+ <0 32 4>, <0 32 4>, <0 32 4>, <0 32 4>,
+ <0 32 4>, <0 32 4>, <0 32 4>, <0 32 4>,
+ <0 32 4>, <0 32 4>, <0 32 4>, <0 32 4>,
+ <0 32 4>, <0 32 4>, <0 32 4>, <0 32 4>,
+ <0 32 4>, <0 32 4>, <0 32 4>, <0 32 4>,
+ <0 32 4>, <0 32 4>, <0 32 4>, <0 32 4>,
+ <0 32 4>, <0 32 4>, <0 32 4>, <0 32 4>,
+ <0 32 4>;
+ };
+
/* sorted in register address */
#include "imx8-ss-img.dtsi"
#include "imx8-ss-dma.dtsi"
