Change Details

In order to work properly in IO-coherent mode, MBUS windows attributes have to be updated. Detect the mode, basing on 'dma-coherent' property under /soc node in the device tree.

Armada 38x SoCs, in order to work properly in IO-coherent mode, requires an update of the MBUS windows attributesd. This patch also configures nexus coherent dma tag, because all busses and children devices have to inherit this setting in runtime. The latter has to be executed as a sysinit (SI_SUB_DRIVERS type), so that bus_dma_tag_create() can be executed properly.

In order to work properly in IO-coherent modeArmada 38x SoCs, MBUS windows attributesin order to work properly in IO-coherent mode, have to be updated. Detect the moderequires an update of the MBUS windows attributesd. This patch also configures nexus coherent dma tag, basing on 'dma-coherent' propertybecause all under /soc node in the device treebusses and children devices have to inherit this setting in runtime. The latter has to be executed as a sysinit (SI_SUB_DRIVERS type), so that bus_dma_tag_create() can be executed properly.