From: Sudeep Holla sudeep.holla@arm.com
commit 54fb3fe0f211d4729a2551cf9497bd612189af9d upstream.
This reverts commit 193d00a2b35ee3353813b4006a18131122087205.
Commit 951d48855d86 ("of: Make of_dma_get_range() work on bus nodes") reworked the logic such that of_dma_get_range() works correctly starting from a bus node containing "dma-ranges".
Since on Juno we don't have a SoC level bus node and "dma-ranges" is present only in the root node, we get the following error:
OF: translation of DMA address(0) to CPU address failed node(/sram@2e000000) OF: translation of DMA address(0) to CPU address failed node(/uart@7ff80000) ... OF: translation of DMA address(0) to CPU address failed node(/mhu@2b1f0000) OF: translation of DMA address(0) to CPU address failed node(/iommu@2b600000) OF: translation of DMA address(0) to CPU address failed node(/iommu@2b600000) OF: translation of DMA address(0) to CPU address failed node(/iommu@2b600000)
So let's fix it by dropping the "dma-ranges" property for now. This should be fine since it doesn't represent any kind of device-visible restriction; it was only there for completeness, and we've since given in to the assumption that missing "dma-ranges" implies a 1:1 mapping anyway.
We can add it later with a proper SoC bus node and moving all the devices that belong there along with the "dma-ranges" if required.
Fixes: 193d00a2b35e ("arm64: dts: juno: add dma-ranges property") Cc: Rob Herring robh+dt@kernel.org Cc: Liviu Dudau liviu.dudau@arm.com Cc: Lorenzo Pieralisi lorenzo.pieralisi@arm.com Acked-by: Robin Murphy robin.murphy@arm.com Signed-off-by: Sudeep Holla sudeep.holla@arm.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/arm64/boot/dts/arm/juno-base.dtsi | 1 - 1 file changed, 1 deletion(-)
--- a/arch/arm64/boot/dts/arm/juno-base.dtsi +++ b/arch/arm64/boot/dts/arm/juno-base.dtsi @@ -5,7 +5,6 @@ /* * Devices shared by all Juno boards */ - dma-ranges = <0 0 0 0 0x100 0>;
memtimer: timer@2a810000 { compatible = "arm,armv7-timer-mem";