Make Armada 375 use the reference clock when possible
Get series with b4
b4 am [email protected]Versions newest first
- v1 Latest4 patches 0 repliesNew
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/4 | clocksource: armada-370-xp: Add missing clock enable | +0 | 0 replies | |
| 2/4 | watchdog: orion: Use the reference clock on Armada 375 SoC | +0 | 0 replies | |
| 3/4 | clocksource: armada-370-xp: Use the reference clock on A375 SoC | +0 | 1 reply | |
| 4/4 | ARM: dts: Enable the reference clock for timer and watchdog on Armada 375 SoC | +0 | 1 reply |
Reviews trailers per patch
1 of 4 patches has a Reviewed-by or Acked-by.
| Patch | Thomas Petazzoni |
|---|---|
| 1/4 | R-b |
| 2/4 | |
| 3/4 | |
| 4/4 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH 0/4] Make Armada 375 use the reference clock when possible
Dear Ezequiel Garcia,
Quoted 5 lines · Ezequiel Garcia
This series adds support for the 25 MHz reference clock available on Armada 375 SoC to use on the timer and watchdog drivers. It is similar to the one present in Armada XP SoC.
Given we initially had access to only a very early SoC revision (A375 Z0)
Actually: s/Z0/Z1/.
Quoted 9 lines
and due to a hardware issue, the timer and watchdog support was originally submitted to use the core clock.
Now that the A0 SoC revision is out, we can fix this and use the reference clock. The reason for this change is that the core clock is subject to the SSCG, so boards where SSCG is enabled exhibit a very large timer drift.
To prevent any compatibility issues when booting with an older devicetree, this series provides proper fall backs in each case.
You don't clearly state whether your patch series keep compatibility with the 375 Z1 or not. And in fact, it doesn't keep compatibility with Z1. I'm fine with that, but then it means we should officially declare the Z1 support in mainline as dead, and get rid of the workarounds that applied only to 375 Z1.
Best regards,
Thomas
Signature · 3 lines
Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com