dcp/dptx: Use dcpext(0) on j473/j474s/j475c #240
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Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: Janne Grunau <j@jannau.net>
Only observed with dcp/dptx in linux after initialisation and reset in m1n1. On the initial startup dcp sends two D576 (hotPlug_notify_gated) presumendly due to state confusion due to the multiple dptx connections. Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: Janne Grunau <j@jannau.net>
Under unknown but slightly broken conditions dcp sends timing modes without linked color modes. Log a warning when this happens and log the number of valid modes before emitting HPD events. Signed-off-by: Janne Grunau <j@jannau.net>
DSC setup seems to require extra steps. dcp reports itself a bandwith limit of 926484480: `IOMFB removing mode: 3840 x 2160 @ 119, bw: 987033600 max: 926484480` Signed-off-by: Janne Grunau <j@jannau.net>
DPTX setup from an initialized connection and display with sleeping and reset dcp is unfortunately quite fragile. The display connection has to be stopped and reestablished. Goodbye flicker free boot. If the IOMFB endpoint is started too early dcp might provide incomplete timing modes which prevent modesets. On display standby a HPD is triggered should result in a fully initialized dcp. If not a display cable unplug and plug should help. MacOS doesn't handle this at all and just gives up. Signed-off-by: Janne Grunau <j@jannau.net>
dcp on t8112 and t602x does not wake up after sleep + reset but dcpext* does. Use dcpext0 for sharing the code with M1* devices. My interpretation of the tea leaves from Apple's marketing department suggests that dcpext is more capable (6k 60Hz vs 5k 60Hz) so use dcpext as long as only one is used. Signed-off-by: Janne Grunau <j@jannau.net>
…dp2hdmi Prevent m1n1 from enabling the absent dcp node. Signed-off-by: Janne Grunau <j@jannau.net>
dcp on t8112 and t602x does not wake up after sleep + reset but dcpext* does. Use dcpext0 for sharing the code with M1* devices. My interpretation of the tea leaves from Apple's marketing department suggests that dcpext is more capable (6k 60Hz vs 5k 60Hz) so use dcpext as long as only one is used. Signed-off-by: Janne Grunau <j@jannau.net>
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manually merged, thanks |
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This switches j473, j474s and j475c to dcpext(0) as display co-processor for HDMI out. Main reason is that dcpext(0) wakes up after sleep + reset. This simplifies handling in m1n1 a little.
Adds support for the rarely used OOB ASYNC callback channel.
Requires AsahiLinux/m1n1#361
contains kernel-robot fixes for bits/200-dcp