From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Tue, 19 Nov 2019 13:10:38 +0000
Subject: gpio/mpc8xxx: fix qoriq GPIO reading
Git-commit: 787b64a43f7acacf8099329ea08872e663f1e74f
Patch-mainline: v5.5-rc1
References: jsc#SLE-9316
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: Mian Yousaf Kaukab <ykaukab@suse.de>
---
drivers/gpio/gpio-mpc8xxx.c | 3 +++
1 file changed, 3 insertions(+)
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",
--
2.16.4