Re: [PATCH v3 3/4] arm64: dts: qcom: sdm630: describe adsp_mem region properly

[Konrad Dybcio]

On 4/27/26 5:20 PM, Nickolay Goppen wrote:
> 
> 27.04.2026 14:49, Konrad Dybcio пишет:
>> On 4/22/26 5:39 PM, Nickolay Goppen wrote:
>>> Downstream [1] this region is marked as shared, reusable and dynamic so
>>> describe it that way.
>>>
>>> [1]: https://github.com/xiaomi-sdm660/android_kernel_xiaomi_sdm660/blob/11-EAS/arch/arm/boot/dts/qcom/sdm660.dtsi#L448
>>>
>>> Signed-off-by: Nickolay Goppen <setotau@xxxxxxxxxxxxxx>
>>> ---
>>>   arch/arm64/boot/dts/qcom/sdm630.dtsi | 9 ++++++---
>>>   1 file changed, 6 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/sdm630.dtsi b/arch/arm64/boot/dts/qcom/sdm630.dtsi
>>> index 4b47efdb57b2..36b419dea153 100644
>>> --- a/arch/arm64/boot/dts/qcom/sdm630.dtsi
>>> +++ b/arch/arm64/boot/dts/qcom/sdm630.dtsi
>>> @@ -494,9 +494,12 @@ venus_region: venus@9f800000 {
>>>               no-map;
>>>           };
>>>   -        adsp_mem: adsp-region@f6000000 {
>>> -            reg = <0x0 0xf6000000 0x0 0x800000>;
>>> -            no-map;
>>> +        adsp_mem: adsp-region {
>>> +            compatible = "shared-dma-pool";
>>> +            alloc-ranges = <0x0 0x00000000 0x0 0xffffffff>;
>> Please make this = <0x0 0x80000000 0x0 0x80000000>; instead, since the RAM
>> starts at 0x80000000
> 
> +Alexey Min found out that on 3 GiB xiaomi-lavender RAM starts at 0x40000000
> 
> 40000000-855fffff : System RAM
>   40080000-41bfffff : Kernel code
>   42600000-42fd0fff : Kernel data
> 88f00000-8abfffff : System RAM
> 95000000-feabffff : System RAM

My docs happen to be silent on this subject..

Do you have a device that has more/less RAM to compare?

Konrad