On Mon, Oct 26, 2020 at 01:16:47AM +0300, Dmitry Osipenko wrote: > Tegra20 External Memory Controller talks to DRAM chips and it needs to be > reprogrammed when memory frequency changes. Tegra Memory Controller sits > behind EMC and these controllers are tightly coupled. This patch adds the > new phandle property which allows to properly express connection of EMC > and MC hardware in a device-tree, it also put the Tegra20 EMC binding on > par with Tegra30+ EMC bindings, which is handy to have. > > Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx> > --- > .../bindings/memory-controllers/nvidia,tegra20-emc.txt | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt > index 567cffd37f3f..1b0d4417aad8 100644 > --- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt > +++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt > @@ -12,6 +12,7 @@ Properties: > irrespective of ram-code configuration. > - interrupts : Should contain EMC General interrupt. > - clocks : Should contain EMC clock. > +- nvidia,memory-controller : Phandle of the Memory Controller node. It looks like you adding a required property which is an ABI break. Best regards, Krzysztof
