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authorBaruch Siach2018-02-20 13:19:32 +0100
committerLinus Walleij2018-02-22 13:48:31 +0100
commit9777d8099a4a9df1625b4caaee1388c0158478c5 (patch)
tree99dabb48aa5ec8060ebfaae89d0b0417c14a6a23 /drivers/hwtracing
parentsoc: bcm2835: sync firmware properties with downstream (diff)
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dt-bindings: gpio: add raspberry pi GPIO expander binding
The Raspberry Pi 3 GPIO expander is controlled by the VC4 firmware over I2C. The firmware mailbox interface allows the ARM core to control the GPIO lines. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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