[PATCH v4 0/4] aspeed-vuart: generalized DT properties

Zev Weiss
2021-04-02T18:27:37Z

This series generalizes the aspeed-vuart driver's device tree
properties to cover all the attributes it currently exposes via sysfs.

The aspeed,sirq-polarity-sense property was a bit of a design mistake
in that it ties Aspeed VUART SIRQ polarity to SCU register bits that
aren't really inherently related to it; the first patch in this series
deprecates it (though we hope to eventually remove it).

The rest of the series adds two new properties, aspeed,lpc-io-reg and
aspeed,lpc-interrupts. The latter allows describing the SIRQ polarity
(along with the interrupt number) directly, providing a simpler
replacement for aspeed,sirq-polarity-sense.

Changes since v3 [2]:
- renamed properties to match aspeed,ast2400-kcs-bmc

Changes since v2 [0]:
- expanded to also handle sirq number and lpc address in addition to
sirq polarity
- added default settings if DT properties not specified
- refactored existing sysfs code slightly, adding range checks
- cleaned up 'make dt_binding_check' warnings

Changes since v1 [1]:
- deprecate and retain aspeed,sirq-polarity-sense instead of removing it
- drop e3c246d4i dts addition from this series

[0] https://lore.kernel.org/openbmc/20210401005702.28271-1-zev@bewilderbeest.net/
[1] https://lore.kernel.org/openbmc/20210330002338.335-1-zev@bewilderbeest.net/
[2] https://lore.kernel.org/openbmc/20210402004716.15961-1-zev@bewilderbeest.net/

Zev Weiss (4):
dt-bindings: serial: 8250: deprecate aspeed,sirq-polarity-sense
drivers/tty/serial/8250: refactor sirq and lpc address setting code
drivers/tty/serial/8250: add aspeed,lpc-io-reg and
aspeed,lpc-interrupts DT properties
dt-bindings: serial: 8250: add aspeed,lpc-io-reg and
aspeed,lpc-interrupts

.../devicetree/bindings/serial/8250.yaml | 28 +++++-
drivers/tty/serial/8250/8250_aspeed_vuart.c | 95 +++++++++++++++----
2 files changed, 103 insertions(+), 20 deletions(-)

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2.31.1