Re: [PATCH v2 2/2] mmc: tegra: Implement ->set_dma_mask()

2019-09-23 Thread Ulf Hansson
On Mon, 23 Sep 2019 at 12:08, Thierry Reding wrote: > > From: Nicolin Chen > > The SDHCI controller on Tegra186 supports 40-bit addressing, which is > usually enough to address all of system memory. However, if the SDHCI > controller is behind an IOMMU, the address space can go beyond. This > hap

[PATCH v2 2/2] mmc: tegra: Implement ->set_dma_mask()

2019-09-23 Thread Thierry Reding
From: Nicolin Chen The SDHCI controller on Tegra186 supports 40-bit addressing, which is usually enough to address all of system memory. However, if the SDHCI controller is behind an IOMMU, the address space can go beyond. This happens on Tegra186 and later where the ARM SMMU has an input address