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authorThierry Reding <treding@nvidia.com>2019-02-11 12:09:19 +0100
committerArnd Bergmann <arnd@arndb.de>2019-02-20 16:08:49 +0100
commit94d9b9337d09bdd27735005b3251d97ab29f7273 (patch)
treeeee60eb6a5fa40453063f481f07eb9186bed6c53 /arch/riscv
parenta3b22b9f11d9fbc48b0291ea92259a5a810e9438 (diff)
downloadlinux-94d9b9337d09bdd27735005b3251d97ab29f7273.tar.bz2
ARM: tegra: Restore DT ABI on Tegra124 Chromebooks
Commit 482997699ef0 ("ARM: tegra: Fix unit_address_vs_reg DTC warnings for /memory") inadventently broke device tree ABI by adding a unit- address to the "/memory" node because the device tree compiler flagged the missing unit-address as a warning. Tegra124 Chromebooks (a.k.a. Nyan) use a bootloader that relies on the full name of the memory node in device tree being exactly "/memory". It can be argued whether this was a good decision or not, and some other bootloaders (such as U-Boot) do accept a unit-address in the name of the node, but the device tree is an ABI and we can't break existing setups just because the device tree compiler considers it bad practice to omit the unit-address nowadays. This partially reverts the offending commit and restores device tree ABI compatibility. Fixes: 482997699ef0 ("ARM: tegra: Fix unit_address_vs_reg DTC warnings for /memory") Reported-by: Tristan Bastian <tristan-c.bastian@gmx.de> Signed-off-by: Thierry Reding <treding@nvidia.com> Tested-by: Tristan Bastian <tristan-c.bastian@gmx.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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