gpio: pca953x: Add support for TI PCA9536

TI PCA9536 is 4-Bit I2C GPIO expander without interrupt support[1].
Add support for the same.

[1] TRM: http://www.ti.com/lit/ds/symlink/pca9536.pdf

Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
index 6b4a98f..08dd15f 100644 (file)
--- a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
@@ -21,6 +21,7 @@ Required properties:
        maxim,max7313
        maxim,max7315
        ti,pca6107
+       ti,pca9536
        ti,tca6408
        ti,tca6416
        ti,tca6424

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 5e3be32..7630285 100644 (file)
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -861,6 +861,7 @@ static const struct of_device_id pca953x_dt_ids[] = {
        { .compatible = "maxim,max7315", .data = OF_953X( 8, PCA_INT), },
 
        { .compatible = "ti,pca6107", .data = OF_953X( 8, PCA_INT), },
+       { .compatible = "ti,pca9536", .data = OF_953X( 4, 0), },
        { .compatible = "ti,tca6408", .data = OF_953X( 8, PCA_INT), },
        { .compatible = "ti,tca6416", .data = OF_953X(16, PCA_INT), },
        { .compatible = "ti,tca6424", .data = OF_953X(24, PCA_INT), },