iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
1,199,786 Commits 104 Branches 1,843 Tags 5.7 GiB
92d24d0927
Commit Graph

3 Commits

Author SHA1 Message Date
Linus Walleij
cca973a823 pinctrl: mcp23s08: Convert to immutable irq_chip 
Convert the driver to immutable irq-chip with a bit of
intuition.

I switched to using irqd_to_hwirq() consistently while we
are at it.

Cc: Marc Zyngier <maz@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230403-immutable-irqchips-v1-6-503788a7f6e6@linaro.org
 2023-04-14 11:08:17 +02:00
Andreas Kaessens
4e73bfa3ee pinctrl: mcp23s08: Add optional reset GPIO 
The MCP23x port expander RESET# line can be connected to a host GPIO.
The optional reset-gpio must be set to LOW if the reset is asserted
at probing time.

On page 5 in the datasheet [0] the "Device Active After Reset high"
time is specified at 0 µs. Therefore no waiting is needed after the
reset transition.

[0] https://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf

Signed-off-by: Andreas Kaessens <akaessens@gmail.com>
Signed-off-by: Darian Biastoch <d.biastoch@gmail.com>
Link: https://lore.kernel.org/r/20210610132438.3085841-1-akaessens@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2021-06-12 01:58:10 +02:00
Andy Shevchenko
0f04a81784 pinctrl: mcp23s08: Split to three parts: core, I²C, SPI 
Split the driver to three parts: core, I²C, SPI.
No functional change intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200407173849.43628-9-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2020-04-16 14:21:23 +02:00