diff mbox series

[v2,1/2] arm64: dts: qcom: msm8953: Set initial address for memory

Message ID 20231125-msm8953-misc-fixes-v2-1-df86655841d9@z3ntu.xyz
State Accepted
Commit 24187868e195202c67c38bcc3ae28f9c6a663fb4
Headers show
Series [v2,1/2] arm64: dts: qcom: msm8953: Set initial address for memory | expand

Commit Message

Luca Weiss Nov. 25, 2023, 12:19 p.m. UTC
The dtbs_check really doesn't like having memory without reg set.

The base address depends on the amount of RAM you have:

  <= 2.00 GiB RAM: 0x80000000
   = 3.00 GiB RAM: 0x40000000
   = 3.75 GiB RAM: 0x10000000
 (more does not fit into the 32-bit physical address space)

So, let's pick one of the values, 0x10000000 which is used on devices
with 3.75 GiB RAM. Since the bootloader will update it to what's present
on the device it doesn't matter too much.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
---
 arch/arm64/boot/dts/qcom/msm8953.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Bjorn Andersson Dec. 3, 2023, 4:20 a.m. UTC | #1
On Sat, Nov 25, 2023 at 01:19:27PM +0100, Luca Weiss wrote:
> The dtbs_check really doesn't like having memory without reg set.
> 
> The base address depends on the amount of RAM you have:
> 
>   <= 2.00 GiB RAM: 0x80000000
>    = 3.00 GiB RAM: 0x40000000
>    = 3.75 GiB RAM: 0x10000000
>  (more does not fit into the 32-bit physical address space)
> 
> So, let's pick one of the values, 0x10000000 which is used on devices
> with 3.75 GiB RAM. Since the bootloader will update it to what's present
> on the device it doesn't matter too much.
> 
> Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
> ---
>  arch/arm64/boot/dts/qcom/msm8953.dtsi | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/msm8953.dtsi b/arch/arm64/boot/dts/qcom/msm8953.dtsi
> index e7de7632669a..a3ba24ca599b 100644
> --- a/arch/arm64/boot/dts/qcom/msm8953.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8953.dtsi
> @@ -174,10 +174,10 @@ scm: scm {
>  		};
>  	};
>  
> -	memory {

Wouldn't it be sufficient to add @0 here, to please dtbs_check?

Regards,
Bjorn

> +	memory@10000000 {
>  		device_type = "memory";
>  		/* We expect the bootloader to fill in the reg */
> -		reg = <0 0 0 0>;
> +		reg = <0 0x10000000 0 0>;
>  	};
>  
>  	pmu {
> 
> -- 
> 2.43.0
>
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/msm8953.dtsi b/arch/arm64/boot/dts/qcom/msm8953.dtsi
index e7de7632669a..a3ba24ca599b 100644
--- a/arch/arm64/boot/dts/qcom/msm8953.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8953.dtsi
@@ -174,10 +174,10 @@  scm: scm {
 		};
 	};
 
-	memory {
+	memory@10000000 {
 		device_type = "memory";
 		/* We expect the bootloader to fill in the reg */
-		reg = <0 0 0 0>;
+		reg = <0 0x10000000 0 0>;
 	};
 
 	pmu {