| Message ID | 20230130200820.82084-2-nfraprado@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3,1/2] arm64: defconfig: Enable missing configs for mt8192-asurada | expand |
Il 30/01/23 21:08, Nícolas F. R. A. Prado ha scritto: > Enable support for restricted DMA pools which provide a level of DMA > memory protection on systems with limited hardware protection > capabilities, such as those lacking an IOMMU. > > For instance, mt8192-asurada-spherion makes use of this to provide a > restricted DMA region for WiFi since its MT7921E WiFi card is connected > through PCIe, and the MT8192 SoC doesn't have an IOMMU context for the > PCIe controller. > > Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com> > On MT8173 Elm, MT8192 Spherion, MT8195 Tomato: Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index be40004a0259..4e806d8068f6 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -1422,6 +1422,7 @@ CONFIG_CRYPTO_DEV_HISI_SEC2=m CONFIG_CRYPTO_DEV_HISI_ZIP=m CONFIG_CRYPTO_DEV_HISI_HPRE=m CONFIG_CRYPTO_DEV_HISI_TRNG=m +CONFIG_DMA_RESTRICTED_POOL=y CONFIG_CMA_SIZE_MBYTES=32 CONFIG_PRINTK_TIME=y CONFIG_DEBUG_KERNEL=y
Enable support for restricted DMA pools which provide a level of DMA memory protection on systems with limited hardware protection capabilities, such as those lacking an IOMMU. For instance, mt8192-asurada-spherion makes use of this to provide a restricted DMA region for WiFi since its MT7921E WiFi card is connected through PCIe, and the MT8192 SoC doesn't have an IOMMU context for the PCIe controller. Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com> --- Changes in v3: - Added this patch arch/arm64/configs/defconfig | 1 + 1 file changed, 1 insertion(+)