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Message-ID: <t6ckvr7bcpoc3z4cam7bilp67nn6qyvrmnqch6tlkwug7n2neq@32f5mso75fvu>
Date: Sat, 2 Dec 2023 20:20:23 -0800
From: Bjorn Andersson <andersson@...nel.org>
To: Luca Weiss <luca@...tu.xyz>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
Andy Gross <agross@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] arm64: dts: qcom: msm8953: Set initial address
for memory
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@...tu.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@...00000 {
> 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
>
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