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Re: Support for ACK and PWR Leds in Raspberry Pi
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From: |
Peter Maydell |
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Subject: |
Re: Support for ACK and PWR Leds in Raspberry Pi |
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Date: |
Mon, 19 Jun 2023 10:21:49 +0100 |
On Wed, 14 Jun 2023 at 05:50, Shivam <shivamvijay543@gmail.com> wrote:
> Hi, I want to add ACK and PWR leds support in the qemu raspi
> machine so from the terminal of emulated raspi I should able
> to control these leds, I coudn't able to understand the hardware
> level controlling of this leds , so if any can help me to start
> on that then it would be great.
QEMU has no infrastructure for displaying a graphical view
of board LEDs, so generally we simply don't model these.
For a few boards we map them out to tracepoints so that
if you enable the tracepoint on the command line you
get a line of text printed to the terminal when the LED
state is updated.
thanks
-- PMM