Hi all,
This series make an update in the MT7621 SoC's watchdog driver code. This
SoC already provides a system controller node to access reset status
register needed for the watchdog. Instead of using MIPS architecture
dependent operations in header 'asm/mach-ralink/ralink_regs.h' use
a phandle to the system controller node and use it through regmap APIs
from the code. Driver is also using some globals that are not needed at
all if a driver data structure is used along the code. Hence, add all
new needed stuff inside a new driver data structure. With this changes
driver can be properly compile tested.
Thanks in advance for reviewing this!
v1 of this series here [0].
v2 of this series here [1].
v3 of this series here [2].
v4 of this series here [3].
v5 of this series here [4].
v6 of this series here [5].
Changes in v7:
- Restore phandler 'mediatek,sysctl' in bindings with Krzysztof's 'Acked-by'.
- Use regmap syscon 'syscon_regmap_lookup_by_phandle()' and only if this
fails use 'syscon_regmap_lookup_by_compatible()' to avoid DTB's ABI breakage.
Changes in v6:
- Get regmap syscon using 'syscon_regmap_lookup_by_compatible()'
- Add COMPILE_TEST and dependencies to Kconfig.
- Collect Philippe Mathieu-Daudé 'Reviewed-by' tag for watchdog node
warning fix.
Changes in v5:
- Drop patches related with device tree ABI breakage and only
maintain the rest.
- Collect Arinc 'Reviewed-by' tag for watchdog node warning fix.
Changes in v4:
- Add a patch to fix a watchdog node warning with 'make dtbs_check'
because of a wrong node name.
- Collect Guenter 'Reviewed-by' tags for watchdog driver code.
- Add a missing 'COMPILE_TEST' to Kconfig which was lost when driver
code was split in two patches in v2.
Changes in v3:
- rename phandler from 'ralink,sysctl' into 'mediatek,sysctl'.
- Drop error message added in PATCH 3 that modifies functionality
and we only want to maintain current functionaloty by now.
Changes in v2:
- Remove no needed compatible 'syscon' from bindings.
- Rewrite new syscon phandle description in bindings.
- Remove 'syscon' from compatible in 'mt7621.dtsi'.
- Split PATCH 3 into two different patches:
- PATCH 3: removes static globals using a driver data structure.
- PATCH 4: remove ralink architecture dependent includes and code.
Best regards,
Sergio Paracuellos
[0]: https://lore.kernel.org/linux-watchdog/20230210065621.598120-1-sergio.paracuellos@xxxxxxxxx/T/#t
[1]: https://lore.kernel.org/linux-watchdog/20230210121735.639089-1-sergio.paracuellos@xxxxxxxxx/T/#t
[2]: https://lore.kernel.org/linux-watchdog/20230210173841.705783-1-sergio.paracuellos@xxxxxxxxx/T/#t
[3]: https://lore.kernel.org/linux-watchdog/20230211073357.755893-1-sergio.paracuellos@xxxxxxxxx/T/#t
[4]: https://lore.kernel.org/linux-watchdog/20230213120638.850612-1-sergio.paracuellos@xxxxxxxxx/T/#t
[5]: https://lore.kernel.org/linux-watchdog/b302c25e-5365-c335-c790-71b3135847d0@xxxxxxxxxx/T/#t
Sergio Paracuellos (5):
dt-bindings: watchdog: mt7621-wdt: add phandle to access system
controller registers
mips: dts: ralink: mt7621: rename watchdog node from 'wdt' into
'watchdog'
mips: dts: ralink: mt7621: add phandle to system controller node for
watchdog
watchdog: mt7621-wdt: avoid static global declarations
watchdog: mt7621-wdt: avoid ralink architecture dependent code
.../watchdog/mediatek,mt7621-wdt.yaml | 7 +
arch/mips/boot/dts/ralink/mt7621.dtsi | 3 +-
drivers/watchdog/Kconfig | 4 +-
drivers/watchdog/mt7621_wdt.c | 122 ++++++++++++------
4 files changed, 93 insertions(+), 43 deletions(-)
--
2.25.1
