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2020-07-16gpio: pca9570: Add DT bindings for NXP PCA9570Sungbo Eo
This patch adds device tree bindings for the NXP PCA9570, a 4-bit I2C GPO expander. Signed-off-by: Sungbo Eo <mans0n@gorani.run> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200630160934.1197066-1-mans0n@gorani.run Signed-off-by: Linus Walleij <linus.walleij@linaro.org>