From: Sudeep Holla <sudeep.holla@arm.com>
Date: Thu, 28 Nov 2019 15:33:57 +0000
Subject: Revert "arm64: dts: juno: add dma-ranges property"
Git-commit: 54fb3fe0f211d4729a2551cf9497bd612189af9d
Patch-mainline: v5.5-rc1
References: git-fixes
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>
Acked-by: Ivan T. Ivanov <iivanov@suse.de>
---
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
@@ -4,7 +4,6 @@
/*
* Devices shared by all Juno boards
*/
- dma-ranges = <0 0 0 0 0x100 0>;
memtimer: timer@2a810000 {
compatible = "arm,armv7-timer-mem";