pinctrl: sh-pfc: r8a7794: DU support
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- v1 Latest4 patches 7 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/4 | pinctrl: sh-pfc: r8a7794: Add DU pin groupsdrivers/ | +170 | 2 replies | |
| 2/4 | pinctrl: sh-pfc: r8a7794: Separate DU CDE and DISPdrivers/ | +34 | 0 replies | |
| 3/4 | pinctrl: sh-pfc: r8a7794: Add missing dot clock signalsdrivers/ | +26 | 1 reply | |
| 4/4 | pinctrl: sh-pfc: r8a7794: Break out ODDF from syncdrivers/ | +22 | 0 replies |
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Cover letter [PATCH 00/04] pinctrl: sh-pfc: r8a7794: DU support
pinctrl: sh-pfc: r8a7794: DU support
[PATCH 01/04] pinctrl: sh-pfc: r8a7794: Add DU pin groups [PATCH 02/04] pinctrl: sh-pfc: r8a7794: Separate DU CDE and DISP [PATCH 03/04] pinctrl: sh-pfc: r8a7794: Add missing dot clock signals [PATCH 04/04] pinctrl: sh-pfc: r8a7794: Break out ODDF from sync
These patches take the r8a7794 PFC DU support code from the BSP and reworks it to fit the r8a7794 ALT board. Tested with the ALT VGA port - by default PFC is not used however enabling PFC using an incremental (yet to be posted) patch works well.
It is worth noting that patch 2-4 modifies the pin groups. This means that the upstream DT ABI for PFC DU will differ compared to the unreviewed BSP code.
In general it is not considered good practice to change the pin groups and break compatibility since they are part of the DT ABI.
For this particular case upstream never have had PFC DU support for r8a7794, so treating the BSP bindings as experimental and migrate away seems reasonable.
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Written against v4.4-rc1
drivers/pinctrl/sh-pfc/pfc-r8a7794.c | 282 ++++++++++++++++++++++++++++++---- 1 file changed, 252 insertions(+), 30 deletions(-)