| Message ID | 20231015-msm8953-misc-fixes-v1-1-b800deca9e46@z3ntu.xyz (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Small dtsi fixes for msm8953 SoC | expand |
On Sun, Oct 15, 2023 at 10:26:01PM +0200, Luca Weiss wrote: > The dtbs_check really doesn't like having memory without reg set. > Address this by setting it to 0x10000000 which seems to be the value > filled in by the bootloader. > Looks like MSM8953 has the same RAM setup as MSM8916, where 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, 0x10000000 will only end up being used on devices with 3.75 GiB RAM. Can you add a note about this in the commit message maybe? We don't know in advance which base address a device will use, so I think it's fine to hardcode one of the choices by default. msm8916.dtsi does the same. Thanks, Stephan > 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 { > + 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 { > > -- > 2.42.0 >
On 10/16/23 09:37, Stephan Gerhold wrote: > On Sun, Oct 15, 2023 at 10:26:01PM +0200, Luca Weiss wrote: >> The dtbs_check really doesn't like having memory without reg set. >> Address this by setting it to 0x10000000 which seems to be the value >> filled in by the bootloader. >> > > Looks like MSM8953 has the same RAM setup as MSM8916, where 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 What a royal mess Konrad
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 {
The dtbs_check really doesn't like having memory without reg set. Address this by setting it to 0x10000000 which seems to be the value filled in by the bootloader. Signed-off-by: Luca Weiss <luca@z3ntu.xyz> --- arch/arm64/boot/dts/qcom/msm8953.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)