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authorRussell King <rmk+kernel@armlinux.org.uk>2019-11-19 16:10:38 +0300
committerLinus Walleij <linus.walleij@linaro.org>2019-11-21 16:30:08 +0300
commit787b64a43f7acacf8099329ea08872e663f1e74f (patch)
treee2f031d523c8dac419c65391c39351d5edeee1a8 /drivers
parent4e50573f39229d5e9c985fa3b4923a8b29619ade (diff)
downloadlinux-787b64a43f7acacf8099329ea08872e663f1e74f.tar.xz
gpio/mpc8xxx: fix qoriq GPIO reading
Qoriq requires the IBE register to be set to enable GPIO inputs to be read. Set it. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/E1iX3HC-00069N-0T@rmk-PC.armlinux.org.uk Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpio/gpio-mpc8xxx.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
index 81f0f31e04d9..f1e164cecff8 100644
--- a/drivers/gpio/gpio-mpc8xxx.c
+++ b/drivers/gpio/gpio-mpc8xxx.c
@@ -387,6 +387,9 @@ static int mpc8xxx_probe(struct platform_device *pdev)
gc->to_irq = mpc8xxx_gpio_to_irq;
+ if (of_device_is_compatible(np, "fsl,qoriq-gpio"))
+ gc->write_reg(mpc8xxx_gc->regs + GPIO_IBE, 0xffffffff);
+
ret = gpiochip_add_data(gc, mpc8xxx_gc);
if (ret) {
pr_err("%pOF: GPIO chip registration failed with status %d\n",