On 7/11/2024 3:25 PM, Konrad Dybcio wrote:
On 3.07.2024 11:16 AM, Ajit Pandey wrote:
On 6/13/2024 1:11 PM, Konrad Dybcio wrote:
On 6/11/24 15:37, Ajit Pandey wrote:
Add device node for camera, display and graphics clock controller on
Qualcomm SM4450 platform.
Signed-off-by: Ajit Pandey <quic_ajipan@xxxxxxxxxxx>
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None of these nodes reference a power domain (which would usually be
CX/MX/MMCX). This way, the RPMhPDs will never be scaled.
The current upstream implementation only allows one power domain to be
scaled, but that's better than none (see other DTs for recent SoCs).
Konrad
SM4450 doesn't support MMCX and CX/MX domains will remain active so
power-domains property is actually not required for SM4450 clock nodes.
It's not only about them being active.. some PLLs require e.g. MX to be
at a certain level, or the system will be unstable
Konrad
With active I mean CX/MX rails will be default running at minimum level
required for clock controllers. Adding power-domains property for CX/MX
rails is like a redundant code as that will also scale such rails at
default specified minimum level only. Also we hadn't added such property
for other targets DT nodes to scale up CX/MX at minimum level.
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Thanks, and Regards
Ajit
