On Thu, Aug 20, 2015 at 03:53:59AM +0100, Leo Yan wrote: > On Hi6220, below memory regions in DDR have specific purpose: > > 0x05e0,0000 - 0x05ef,ffff: For MCU firmware using at runtime; > 0x0740,f000 - 0x0740,ffff: For MCU firmware's section; > 0x06df,f000 - 0x06df,ffff: For mailbox message data. > > This patch reserves these memory regions and add device node for > mailbox in dts. > > Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx> > --- > arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts | 20 +++++++++++++++++--- > arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 8 ++++++++ > 2 files changed, 25 insertions(+), 3 deletions(-) > > diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts > index e36a539..d5470d3 100644 > --- a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts > +++ b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts > @@ -7,9 +7,6 @@ > > /dts-v1/; > > -/*Reserved 1MB memory for MCU*/ > -/memreserve/ 0x05e00000 0x00100000; > - > #include "hi6220.dtsi" > > / { > @@ -28,4 +25,21 @@ > device_type = "memory"; > reg = <0x0 0x0 0x0 0x40000000>; > }; > + > + reserved-memory { > + #address-cells = <2>; > + #size-cells = <2>; > + ranges; > + > + mcu-buf@05e00000 { > + no-map; > + reg = <0x0 0x05e00000 0x0 0x00100000>, /* MCU firmware buffer */ > + <0x0 0x0740f000 0x0 0x00001000>; /* MCU firmware section */ > + }; > + > + mbox-buf@06dff000 { > + no-map; > + reg = <0x0 0x06dff000 0x0 0x00001000>; /* Mailbox message buf */ > + }; > + }; > }; As mentioned in my other reply [1], you should fix your EFI memory map instead. There is no reason for this at all. Mark. [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-August/365921.html -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html