Dss ds docs#732
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StaticRocket
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Vale comments about passive voice and such
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StaticRocket
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kwillis01
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Jul 13, 2026
| DSS plus Deep Sleep | ||
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| DSS plus Deep Sleep is a low-power mode where the Display Subsystem (DSS) is on to display |
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Maybe "on" should be bolded or in uppercase to make sure the reader understands that it is being used to describe a state
| on-chip memory (a small FIFO buffer) instead of continuously fetching from DDR. This | ||
| significantly reduces memory bandwidth and power consumption during suspend. | ||
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| The AM62L-DSS has a 20 KB FIFO buffer. For the self-refresh feature to work, your static |
| **Width × Height × 3 ≤ 20,480 bytes** | ||
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| For example, a 50×50 RGB image requires 50 × 50 × 3 = 7,500 bytes, which fits comfortably | ||
| within the limit. If your frame is too large, self-refresh will not activate. |
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| .. code-block:: console | ||
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| root@am62lxx-evm:~# systemctl stop emptty.service |
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nit: I think you can just do systemctl stop emptty so its a little less to type :)
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| Using both properties together enables DSS plus Deep Sleep mode: the display shows | ||
| a static frame from internal memory while the rest of the system suspends. |
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nit: if you wanted to, you could remove these lines since the last sentence of the previous paragraph says the same thing
Add DSS plus Deep Sleep low power mode, a new suspend mode where the Display Subsystem remains powered to show a static image while the rest of the system enters Deep Sleep. Signed-off-by: Akashdeep Kaur <a-kaur@ti.com>
Add power consumption data for DSS plus Deep Sleep mode. This mode consumes more power than standard Deep Sleep (14.07 mW) due to the active display subsystem with FIFO replay. Signed-off-by: Akashdeep Kaur <a-kaur@ti.com>
Add DSS plus Deep Sleep mode to Key Release References section, highlighting the new display subsystem self-refresh capability that allows showing static images during system suspend. Signed-off-by: Akashdeep Kaur <a-kaur@ti.com>
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| [ 102.509008] PM: suspend exit | ||
| root@am62lxx-evm:~# | ||
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| Resuming from DSS plus Deep Sleep |
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I think this needs to be named differently since it sounds like resuming from suspend will be described. Maybe rename to something like "Return DSS to Normal Operation"
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i think, we can rename to something else, i am not sure about "Normal operation" term as that can vary.
@devarsht , what can be a better alternative?
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