On 04/11/2018 10:53 AM, sean.wang@xxxxxxxxxxxx wrote:
> From: Sean Wang <sean.wang@xxxxxxxxxxxx>
>
> Below two wrong nodes in existing DTS files would cause a fail boot since
> in fact the address 0 is not the correct place the memory device locates
> at.
>
> memory {
> device_type = "memory";
> reg = <0x0 0x0 0x0 0x0>;
> };
>
> memory@80000000 {
> reg = <0x0 0x80000000 0x0 0x40000000>;
> };
>
> In order to avoid having a memory node starting at address 0, we can't
> include file skeleton64.dtsi and instead need to explicitly manually
> define a few of properties the DTS relies on such as #address-cells
> and #size-cells in root node and device_type in the node memory@80000000.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 31ac0d69a1d4 ("ARM: dts: mediatek: add MT7623 basic support")
> Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> ---
> arch/arm/boot/dts/mt7623.dtsi | 3 ++-
> arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts | 1 +
> arch/arm/boot/dts/mt7623n-rfb.dtsi | 1 +
> 3 files changed, 4 insertions(+), 1 deletion(-)
>
merged. We would need this at least for mt2701 as well, correct?
Would you mind to provide a patch.
Regards,
Matthias
> diff --git a/arch/arm/boot/dts/mt7623.dtsi b/arch/arm/boot/dts/mt7623.dtsi
> index fec4715..406a9f3 100644
> --- a/arch/arm/boot/dts/mt7623.dtsi
> +++ b/arch/arm/boot/dts/mt7623.dtsi
> @@ -15,11 +15,12 @@
> #include <dt-bindings/phy/phy.h>
> #include <dt-bindings/reset/mt2701-resets.h>
> #include <dt-bindings/thermal/thermal.h>
> -#include "skeleton64.dtsi"
>
> / {
> compatible = "mediatek,mt7623";
> interrupt-parent = <&sysirq>;
> + #address-cells = <2>;
> + #size-cells = <2>;
>
> cpu_opp_table: opp-table {
> compatible = "operating-points-v2";
> diff --git a/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts b/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
> index bbf56f8..5938e4c 100644
> --- a/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
> +++ b/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
> @@ -109,6 +109,7 @@
> };
>
> memory@80000000 {
> + device_type = "memory";
> reg = <0 0x80000000 0 0x40000000>;
> };
> };
> diff --git a/arch/arm/boot/dts/mt7623n-rfb.dtsi b/arch/arm/boot/dts/mt7623n-rfb.dtsi
> index a199ae7..343e8ef 100644
> --- a/arch/arm/boot/dts/mt7623n-rfb.dtsi
> +++ b/arch/arm/boot/dts/mt7623n-rfb.dtsi
> @@ -40,6 +40,7 @@
> };
>
> memory@80000000 {
> + device_type = "memory";
> reg = <0 0x80000000 0 0x40000000>;
> };
>
>
