diff options
| author | Peng Fan <peng.fan@nxp.com> | 2018-08-02 15:41:00 +0800 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-24 12:41:33 +0300 |
| commit | 90956bf66f3a18c2997719f1bc0cf7014a42434f (patch) | |
| tree | a7ebad2a914b1054f7492a9612b05c2cf7d1e02d /arch | |
| parent | f7c1b76a67a47ea366d5325f502781518d61af37 (diff) | |
MLK-19116 ARMR64: dts: imx8qm mek root: disable smmu and change sid for usdhc1
SMMU is being managed by Jailhosue hypervisor, so disable it in
root cell.
SDHC1 is owned by non-root cell Linux, but we need U-Boot
to program SID according to the iommus property.
Since SDHC1 is in different cell, it need a different SID to avoid DMA
attack.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/fsl-imx8qm-mek-root.dts | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/arm64/boot/dts/freescale/fsl-imx8qm-mek-root.dts b/arch/arm64/boot/dts/freescale/fsl-imx8qm-mek-root.dts index 98ca22a3a2c4..e28fd5ffa399 100644 --- a/arch/arm64/boot/dts/freescale/fsl-imx8qm-mek-root.dts +++ b/arch/arm64/boot/dts/freescale/fsl-imx8qm-mek-root.dts @@ -102,9 +102,15 @@ }; }; +&smmu { + /* Jailhouse hypervisor will initialize SMMU and use it. */ + status = "disabled"; +}; + &usdhc1 { + /* Let U-Boot program SID */ + iommus = <&smmu 0x10 0x7f80>; /delete-property/ compatible; - /delete-property/ iommus; }; &lpuart2 { |