On 5/9/25 9:37 AM, Lijuan Gao wrote:
>
>
> 在 5/8/2025 10:41 PM, Konrad Dybcio 写道:
>> On 5/7/25 12:26 PM, Lijuan Gao wrote:
>>> Add a simple-mfd representing IMEM on QCS615 and define the PIL
>>> relocation info region as its child. The PIL region in IMEM is used to
>>> communicate load addresses of remoteproc to post mortem debug tools, so
>>> that these tools can collect ramdumps.
>>>
>>> Signed-off-by: Lijuan Gao <quic_liju...@quicinc.com>
>>> ---
>>> arch/arm64/boot/dts/qcom/qcs615.dtsi | 14 ++++++++++++++
>>> 1 file changed, 14 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>> b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>> index 53661e3a852e..fefdb0fd66f7 100644
>>> --- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>> +++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>> @@ -3266,6 +3266,20 @@ sram@c3f0000 {
>>> reg = <0x0 0x0c3f0000 0x0 0x400>;
>>> };
>>> + sram@146aa000 {
>>> + compatible = "qcom,qcs615-imem", "syscon", "simple-mfd";
>>> + reg = <0x0 0x146aa000 0x0 0x1000>;
>>
>> 0x14680000 0x2c000
>
> I checked the latest datasheet, the Shared IMEM address is 0x146aa000 and its
> size is 0x1000, 0x14680000 is the start address of IMEM layout. The shared
> IMEM is used for debugging purposes, while the others parts are dedicated.
Even if we don't use the entirety of it, it's good to describe
the whole block
Konrad
