diff options
| -rw-r--r-- | target/linux/mpc85xx/patches-5.10/110-gpio-mpc8xxx-Fix-support-for-IRQ_TYPE_LEVEL_LOW-flow.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/target/linux/mpc85xx/patches-5.10/110-gpio-mpc8xxx-Fix-support-for-IRQ_TYPE_LEVEL_LOW-flow.patch b/target/linux/mpc85xx/patches-5.10/110-gpio-mpc8xxx-Fix-support-for-IRQ_TYPE_LEVEL_LOW-flow.patch new file mode 100644 index 0000000000..38ae4e08e6 --- /dev/null +++ b/target/linux/mpc85xx/patches-5.10/110-gpio-mpc8xxx-Fix-support-for-IRQ_TYPE_LEVEL_LOW-flow.patch @@ -0,0 +1,37 @@ +From 29af30435022442ec4eccf3166956b8e0b8a2134 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> +Date: Mon, 5 Sep 2022 23:13:47 +0200 +Subject: [PATCH] gpio: mpc8xxx: Fix support for IRQ_TYPE_LEVEL_LOW flow_type + in mpc85xx +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Commit e39d5ef67804 ("powerpc/5xxx: extend mpc8xxx_gpio driver to support +mpc512x gpios") implemented support for IRQ_TYPE_LEVEL_LOW flow type in +mpc512x via falling edge type. Do same for mpc85xx which support was added +in commit 345e5c8a1cc3 ("powerpc: Add interrupt support to mpc8xxx_gpio"). + +Fixes probing of lm90 hwmon driver on mpc85xx based board which use level +interrupt. Without it kernel prints error and refuse lm90 to work: + + [ 15.258370] genirq: Setting trigger mode 8 for irq 49 failed (mpc8xxx_irq_set_type+0x0/0xf8) + [ 15.267168] lm90 0-004c: cannot request IRQ 49 + [ 15.272708] lm90: probe of 0-004c failed with error -22 + +Fixes: 345e5c8a1cc3 ("powerpc: Add interrupt support to mpc8xxx_gpio") +Signed-off-by: Pali Rohár <pali@kernel.org> +--- + drivers/gpio/gpio-mpc8xxx.c | 1 + + 1 file changed, 1 insertion(+) + +--- a/drivers/gpio/gpio-mpc8xxx.c ++++ b/drivers/gpio/gpio-mpc8xxx.c +@@ -169,6 +169,7 @@ static int mpc8xxx_irq_set_type(struct i + + switch (flow_type) { + case IRQ_TYPE_EDGE_FALLING: ++ case IRQ_TYPE_LEVEL_LOW: + raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags); + gc->write_reg(mpc8xxx_gc->regs + GPIO_ICR, + gc->read_reg(mpc8xxx_gc->regs + GPIO_ICR) |