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Arm Juno fix for v5.17 

Just a single fix to address coherency issue reported[1] by removing the
 GICv2m address from the DMA ranges as it loose coherency if mapped as
 cacheable at the SMMU due to the attribute combining rules. The GICv2m
 range is normally programmed for Device memory attributes.
 
 [1] https://lore.kernel.org/stable/0a1d437d-9ea0-de83-3c19-e07f560ad37c@arm.com/
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Merge tag 'juno-fix-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

Arm Juno fix for v5.17

Just a single fix to address coherency issue reported[1] by removing the
GICv2m address from the DMA ranges as it loose coherency if mapped as
cacheable at the SMMU due to the attribute combining rules. The GICv2m
range is normally programmed for Device memory attributes.

[1] https://lore.kernel.org/stable/0a1d437d-9ea0-de83-3c19-e07f560ad37c@arm.com/

* tag 'juno-fix-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  arm64: dts: juno: Remove GICv2m dma-range

Link: https://lore.kernel.org/r/20220214142615.2375269-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2022-02-18 17:30:32 +01:00
parent 4f6668f052 31eeb6b09f
commit f159f2941d
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm64/boot/dts/arm/juno-base.dtsi
View File

@ -543,8 +543,7 @@
<0x02000000 0x00 0x50000000 0x00 0x50000000 0x0 0x08000000>,
<0x42000000 0x40 0x00000000 0x40 0x00000000 0x1 0x00000000>;
/* Standard AXI Translation entries as programmed by EDK2 */
dma-ranges = <0x02000000 0x0 0x2c1c0000 0x0 0x2c1c0000 0x0 0x00040000>,
<0x02000000 0x0 0x80000000 0x0 0x80000000 0x0 0x80000000>,
dma-ranges = <0x02000000 0x0 0x80000000 0x0 0x80000000 0x0 0x80000000>,
<0x43000000 0x8 0x00000000 0x8 0x00000000 0x2 0x00000000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0 0 0 7>;