diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2011-01-18 14:43:44 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2011-01-18 14:43:44 +0000 |
| commit | a30322060530e2831ba08c6187931e5347096f3b (patch) | |
| tree | 3074ff2be81baaee9e02f611b877105c9e1ef213 | |
| parent | 100211927c45e788da517322d7798182b2a1e68b (diff) | |
| download | mtk-20170518-a30322060530e2831ba08c6187931e5347096f3b.zip mtk-20170518-a30322060530e2831ba08c6187931e5347096f3b.tar.gz mtk-20170518-a30322060530e2831ba08c6187931e5347096f3b.tar.bz2 | |
mpc85xx: disable the i8259 irq on mpc8548cds (but leave the controller initialized) - it shares an irq with the pcie device which causes irq storms
SVN-Revision: 25037
| -rw-r--r-- | target/linux/mpc85xx/patches/120-mpc8548_cds_i8259_noirq_init.patch | 23 | ||||
| -rw-r--r-- | target/linux/mpc85xx/patches/130-mpc8548_cds_disable_i8259_irq.patch | 13 |
2 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/mpc85xx/patches/120-mpc8548_cds_i8259_noirq_init.patch b/target/linux/mpc85xx/patches/120-mpc8548_cds_i8259_noirq_init.patch new file mode 100644 index 0000000..4d58510 --- /dev/null +++ b/target/linux/mpc85xx/patches/120-mpc8548_cds_i8259_noirq_init.patch @@ -0,0 +1,23 @@ +--- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c ++++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c +@@ -234,15 +234,16 @@ static int mpc85xx_cds_8259_attach(void) + return -ENODEV; + } + ++ i8259_init(cascade_node, 0); ++ of_node_put(cascade_node); ++ + cascade_irq = irq_of_parse_and_map(cascade_node, 0); + if (cascade_irq == NO_IRQ) { +- printk(KERN_ERR "Failed to map cascade interrupt\n"); ++ of_node_put(cascade_node); ++ printk(KERN_DEBUG "No interrupt for i8259 PIC\n"); + return -ENXIO; + } + +- i8259_init(cascade_node, 0); +- of_node_put(cascade_node); +- + /* + * Hook the interrupt to make sure desc->action is never NULL. + * This is required to ensure that the interrupt does not get diff --git a/target/linux/mpc85xx/patches/130-mpc8548_cds_disable_i8259_irq.patch b/target/linux/mpc85xx/patches/130-mpc8548_cds_disable_i8259_irq.patch new file mode 100644 index 0000000..54a2785 --- /dev/null +++ b/target/linux/mpc85xx/patches/130-mpc8548_cds_disable_i8259_irq.patch @@ -0,0 +1,13 @@ +--- a/arch/powerpc/boot/dts/mpc8548cds.dts ++++ b/arch/powerpc/boot/dts/mpc8548cds.dts +@@ -492,8 +492,10 @@ + #address-cells = <0>; + #interrupt-cells = <2>; + compatible = "chrp,iic"; ++/* + interrupts = <0 1>; + interrupt-parent = <&mpic>; ++*/ + }; + + rtc@70 { |