Re: [PATCH v6 2/4] ARM: dts: tegra: Fix unit_address_vs_reg DTC warnings for /memory

From: Stefan Agner
Date: Wed May 23 2018 - 06:06:57 EST

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On 23.05.2018 11:56, Krzysztof Kozlowski wrote:
> Add a generic /memory node in each Tegra DTSI (with empty reg property,
> to be overidden by each DTS) and set proper unit address for /memory
> nodes to fix the DTC warnings:
>
> arch/arm/boot/dts/tegra20-harmony.dtb: Warning (unit_address_vs_reg):
> /memory: node has a reg or ranges property, but no unit name
>
> The DTB after the change is the same as before except adding
> unit-address to /memory node.
>
> Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
>
> ---
>
> Changes since v5:
> 1. Split with skeleton.dtsi removal (suggested by Stefan).
>
> Changes since v4:
> 1. None
> ---
> arch/arm/boot/dts/tegra114-dalmore.dts | 2 +-
> arch/arm/boot/dts/tegra114-roth.dts | 2 +-
> arch/arm/boot/dts/tegra114-tn7.dts | 2 +-
> arch/arm/boot/dts/tegra114.dtsi | 3 ++-
> arch/arm/boot/dts/tegra124-apalis-v1.2.dtsi | 2 +-
> arch/arm/boot/dts/tegra124-apalis.dtsi | 2 +-
> arch/arm/boot/dts/tegra124-jetson-tk1.dts | 2 +-
> arch/arm/boot/dts/tegra124-nyan.dtsi | 2 +-
> arch/arm/boot/dts/tegra124-venice2.dts | 2 +-
> arch/arm/boot/dts/tegra124.dtsi | 3 ++-
> arch/arm/boot/dts/tegra20-colibri-512.dtsi | 2 +-
> arch/arm/boot/dts/tegra20-harmony.dts | 2 +-
> arch/arm/boot/dts/tegra20-paz00.dts | 2 +-
> arch/arm/boot/dts/tegra20-seaboard.dts | 2 +-
> arch/arm/boot/dts/tegra20-tamonten.dtsi | 2 +-
> arch/arm/boot/dts/tegra20-trimslice.dts | 2 +-
> arch/arm/boot/dts/tegra20-ventana.dts | 2 +-
> arch/arm/boot/dts/tegra20.dtsi | 3 ++-
> arch/arm/boot/dts/tegra30-apalis.dtsi | 4 ++--
> arch/arm/boot/dts/tegra30-beaver.dts | 2 +-
> arch/arm/boot/dts/tegra30-cardhu.dtsi | 2 +-
> arch/arm/boot/dts/tegra30-colibri.dtsi | 2 +-
> arch/arm/boot/dts/tegra30.dtsi | 3 ++-
> 23 files changed, 28 insertions(+), 24 deletions(-)
>
> diff --git a/arch/arm/boot/dts/tegra114-dalmore.dts
> b/arch/arm/boot/dts/tegra114-dalmore.dts
> index eafff16765b4..1788556b4977 100644
> --- a/arch/arm/boot/dts/tegra114-dalmore.dts
> +++ b/arch/arm/boot/dts/tegra114-dalmore.dts
> @@ -23,7 +23,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@80000000 {
> reg = <0x80000000 0x40000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra114-roth.dts
> b/arch/arm/boot/dts/tegra114-roth.dts
> index 7ed7370ee67a..3d3835591cd2 100644
> --- a/arch/arm/boot/dts/tegra114-roth.dts
> +++ b/arch/arm/boot/dts/tegra114-roth.dts
> @@ -28,7 +28,7 @@
> };
> };
>
> - memory {
> + memory@80000000 {
> /* memory >= 0x79600000 is reserved for firmware usage */
> reg = <0x80000000 0x79600000>;
> };
> diff --git a/arch/arm/boot/dts/tegra114-tn7.dts
> b/arch/arm/boot/dts/tegra114-tn7.dts
> index 7fc4a8b31e45..bfdd1bf61816 100644
> --- a/arch/arm/boot/dts/tegra114-tn7.dts
> +++ b/arch/arm/boot/dts/tegra114-tn7.dts
> @@ -28,7 +28,7 @@
> };
> };
>
> - memory {
> + memory@80000000 {
> /* memory >= 0x37e00000 is reserved for firmware usage */
> reg = <0x80000000 0x37e00000>;
> };
> diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi
> index 27ef515e5640..aff4b8e115bc 100644
> --- a/arch/arm/boot/dts/tegra114.dtsi
> +++ b/arch/arm/boot/dts/tegra114.dtsi
> @@ -11,8 +11,9 @@
> #address-cells = <1>;
> #size-cells = <1>;
>
> - memory {
> + memory@80000000 {
> device_type = "memory";
> + reg = <0x80000000 0>;

Nit: I'd rather prefer

reg = <0x80000000 0x0>;

> };
>
> host1x@50000000 {
> diff --git a/arch/arm/boot/dts/tegra124-apalis-v1.2.dtsi
> b/arch/arm/boot/dts/tegra124-apalis-v1.2.dtsi
> index bb67edb016c5..6a7f45651d38 100644
> --- a/arch/arm/boot/dts/tegra124-apalis-v1.2.dtsi
> +++ b/arch/arm/boot/dts/tegra124-apalis-v1.2.dtsi
> @@ -15,7 +15,7 @@
> compatible = "toradex,apalis-tk1-v1.2", "toradex,apalis-tk1",
> "nvidia,tegra124";
>
> - memory {
> + memory@0 {
> reg = <0x0 0x80000000 0x0 0x80000000>;
> };

Unit address combines all address cells, so this should be 80000000
here. See also the device tree spec (v0.2) which has an example in
chapter 3.4 /memory node.

So this should be:

memory@80000000 {
...

Same with all the board files below.

>
> diff --git a/arch/arm/boot/dts/tegra124-apalis.dtsi
> b/arch/arm/boot/dts/tegra124-apalis.dtsi
> index 65a2161b9b8e..e4625abd0a8a 100644
> --- a/arch/arm/boot/dts/tegra124-apalis.dtsi
> +++ b/arch/arm/boot/dts/tegra124-apalis.dtsi
> @@ -50,7 +50,7 @@
> model = "Toradex Apalis TK1";
> compatible = "toradex,apalis-tk1", "nvidia,tegra124";
>
> - memory {
> + memory@0 {
> reg = <0x0 0x80000000 0x0 0x80000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra124-jetson-tk1.dts
> b/arch/arm/boot/dts/tegra124-jetson-tk1.dts
> index 6dbcf84dafbc..e23b1159e8fd 100644
> --- a/arch/arm/boot/dts/tegra124-jetson-tk1.dts
> +++ b/arch/arm/boot/dts/tegra124-jetson-tk1.dts
> @@ -24,7 +24,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@0 {
> reg = <0x0 0x80000000 0x0 0x80000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra124-nyan.dtsi
> b/arch/arm/boot/dts/tegra124-nyan.dtsi
> index 3609367037a6..f45ac668d88c 100644
> --- a/arch/arm/boot/dts/tegra124-nyan.dtsi
> +++ b/arch/arm/boot/dts/tegra124-nyan.dtsi
> @@ -13,7 +13,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@0 {
> reg = <0x0 0x80000000 0x0 0x80000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra124-venice2.dts
> b/arch/arm/boot/dts/tegra124-venice2.dts
> index 89bcc178994d..44492b48e165 100644
> --- a/arch/arm/boot/dts/tegra124-venice2.dts
> +++ b/arch/arm/boot/dts/tegra124-venice2.dts
> @@ -18,7 +18,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@0 {
> reg = <0x0 0x80000000 0x0 0x80000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi
> index 951feea784af..ad9c9cd6fa8a 100644
> --- a/arch/arm/boot/dts/tegra124.dtsi
> +++ b/arch/arm/boot/dts/tegra124.dtsi
> @@ -13,8 +13,9 @@
> #address-cells = <2>;
> #size-cells = <2>;
>
> - memory {
> + memory@0 {
> device_type = "memory";
> + reg = <0 0>;
> };

This should have two address and two size cells I guess. And DDR for all
TK1 start at 0x0 0x80000000...

So here with a default length of 0:

memory@80000000 {
reg = <0x0 0x80000000 0x0 0x0>;
};

>
> pcie@1003000 {
> diff --git a/arch/arm/boot/dts/tegra20-colibri-512.dtsi
> b/arch/arm/boot/dts/tegra20-colibri-512.dtsi
> index 5c202b3e3bb1..5623ff8d128c 100644
> --- a/arch/arm/boot/dts/tegra20-colibri-512.dtsi
> +++ b/arch/arm/boot/dts/tegra20-colibri-512.dtsi
> @@ -10,7 +10,7 @@
> rtc1 = "/rtc@7000e000";
> };
>
> - memory {
> + memory@0 {
> reg = <0x00000000 0x20000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra20-harmony.dts
> b/arch/arm/boot/dts/tegra20-harmony.dts
> index 628a55a9318b..1d96d92b72a7 100644
> --- a/arch/arm/boot/dts/tegra20-harmony.dts
> +++ b/arch/arm/boot/dts/tegra20-harmony.dts
> @@ -18,7 +18,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@0 {
> reg = <0x00000000 0x40000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra20-paz00.dts
> b/arch/arm/boot/dts/tegra20-paz00.dts
> index 30436969adc0..ef245291924f 100644
> --- a/arch/arm/boot/dts/tegra20-paz00.dts
> +++ b/arch/arm/boot/dts/tegra20-paz00.dts
> @@ -19,7 +19,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@0 {
> reg = <0x00000000 0x20000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra20-seaboard.dts
> b/arch/arm/boot/dts/tegra20-seaboard.dts
> index 284aae351ff2..f91441683aad 100644
> --- a/arch/arm/boot/dts/tegra20-seaboard.dts
> +++ b/arch/arm/boot/dts/tegra20-seaboard.dts
> @@ -18,7 +18,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@0 {
> reg = <0x00000000 0x40000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra20-tamonten.dtsi
> b/arch/arm/boot/dts/tegra20-tamonten.dtsi
> index 872046d48709..20137fc578b1 100644
> --- a/arch/arm/boot/dts/tegra20-tamonten.dtsi
> +++ b/arch/arm/boot/dts/tegra20-tamonten.dtsi
> @@ -15,7 +15,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@0 {
> reg = <0x00000000 0x20000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra20-trimslice.dts
> b/arch/arm/boot/dts/tegra20-trimslice.dts
> index d55c6b240a30..9eb26dc15f6b 100644
> --- a/arch/arm/boot/dts/tegra20-trimslice.dts
> +++ b/arch/arm/boot/dts/tegra20-trimslice.dts
> @@ -18,7 +18,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@0 {
> reg = <0x00000000 0x40000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra20-ventana.dts
> b/arch/arm/boot/dts/tegra20-ventana.dts
> index ee3fbf941e79..f44551e2d9d0 100644
> --- a/arch/arm/boot/dts/tegra20-ventana.dts
> +++ b/arch/arm/boot/dts/tegra20-ventana.dts
> @@ -18,7 +18,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@0 {
> reg = <0x00000000 0x40000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
> index 88dd1afb5877..55581c0e5105 100644
> --- a/arch/arm/boot/dts/tegra20.dtsi
> +++ b/arch/arm/boot/dts/tegra20.dtsi
> @@ -13,8 +13,9 @@
> chosen { };
> aliases { };
>
> - memory {
> + memory@0 {
> device_type = "memory";
> + reg = <0 0>;
> };
>
> iram@40000000 {
> diff --git a/arch/arm/boot/dts/tegra30-apalis.dtsi
> b/arch/arm/boot/dts/tegra30-apalis.dtsi
> index 6f29cbad6e8a..9465fc592b7b 100644
> --- a/arch/arm/boot/dts/tegra30-apalis.dtsi
> +++ b/arch/arm/boot/dts/tegra30-apalis.dtsi
> @@ -10,8 +10,8 @@
> model = "Toradex Apalis T30";
> compatible = "toradex,apalis_t30", "nvidia,tegra30";
>
> - memory {
> - reg = <0 0>;
> + memory@80000000 {
> + reg = <0x80000000 0x40000000>;
> };
>
> pcie@3000 {
> diff --git a/arch/arm/boot/dts/tegra30-beaver.dts
> b/arch/arm/boot/dts/tegra30-beaver.dts
> index ae52a5039506..1434d50438f9 100644
> --- a/arch/arm/boot/dts/tegra30-beaver.dts
> +++ b/arch/arm/boot/dts/tegra30-beaver.dts
> @@ -17,7 +17,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@80000000 {
> reg = <0x80000000 0x7ff00000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra30-cardhu.dtsi
> b/arch/arm/boot/dts/tegra30-cardhu.dtsi
> index 92a9740c533f..33b73dca16a3 100644
> --- a/arch/arm/boot/dts/tegra30-cardhu.dtsi
> +++ b/arch/arm/boot/dts/tegra30-cardhu.dtsi
> @@ -40,7 +40,7 @@
> stdout-path = "serial0:115200n8";
> };
>
> - memory {
> + memory@80000000 {
> reg = <0x80000000 0x40000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra30-colibri.dtsi
> b/arch/arm/boot/dts/tegra30-colibri.dtsi
> index c44d8c40c410..9bf3327665d3 100644
> --- a/arch/arm/boot/dts/tegra30-colibri.dtsi
> +++ b/arch/arm/boot/dts/tegra30-colibri.dtsi
> @@ -10,7 +10,7 @@
> model = "Toradex Colibri T30";
> compatible = "toradex,colibri_t30", "nvidia,tegra30";
>
> - memory {
> + memory@80000000 {
> reg = <0x80000000 0x40000000>;
> };
>
> diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi
> index 19237c08c166..2b6243b0c6d6 100644
> --- a/arch/arm/boot/dts/tegra30.dtsi
> +++ b/arch/arm/boot/dts/tegra30.dtsi
> @@ -14,8 +14,9 @@
> chosen { };
> aliases { };
>
> - memory {
> + memory@80000000 {
> device_type = "memory";
> + reg = <0x80000000 0>;

Nit: for consistency sake, 0x0 :-)

--
Stefan

> };
>
> pcie@3000 {

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