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gpio/mpc8xxx: fix qoriq GPIO reading 

[ Upstream commit 787b64a43f ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Russell King 2019-11-19 13:10:38 +00:00 committed by Greg Kroah-Hartman
parent 02270fc85b
commit 3fd185ba56
1 changed files with 3 additions and 0 deletions
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3
drivers/gpio/gpio-mpc8xxx.c
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@ -386,6 +386,9 @@ 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",