diff options
author | Marc Zyngier <marc.zyngier@arm.com> | 2015-03-13 16:05:37 +0000 |
---|---|---|
committer | Shawn Guo <shawn.guo@linaro.org> | 2015-03-30 16:43:51 +0800 |
commit | 14517564795a5cd22e2da3119037f9883383fae9 (patch) | |
tree | 3c0d182b371855866cfd09a5110adab26b6479a4 /arch/arm/mach-imx | |
parent | e33b67523f556aa7ddb09f1c7fa4de5c080670c9 (diff) |
ARM: imx6: Warn when an old DT is detected
Now that the GPC has been converted to be a full blown irqchip
(and not a mole on the side of the GIC), booting a new kernel
with an old DT is likely to result in a rough ride for the user.
This patch makes sure such a situation is promptly detected and
the user made aware that a DT update is in order.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx')
-rw-r--r-- | arch/arm/mach-imx/common.h | 1 | ||||
-rw-r--r-- | arch/arm/mach-imx/gpc.c | 10 | ||||
-rw-r--r-- | arch/arm/mach-imx/mach-imx6q.c | 1 | ||||
-rw-r--r-- | arch/arm/mach-imx/mach-imx6sl.c | 1 | ||||
-rw-r--r-- | arch/arm/mach-imx/mach-imx6sx.c | 1 |
5 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h index 2fbdc283bc99..0f04e30b726d 100644 --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -66,6 +66,7 @@ unsigned int imx_get_soc_revision(void); void imx_init_revision_from_anatop(void); struct device *imx_soc_device_init(void); void imx6_enable_rbc(bool enable); +void imx_gpc_check_dt(void); void imx_gpc_set_arm_power_in_lpm(bool power_off); void imx_gpc_set_arm_power_up_timing(u32 sw2iso, u32 sw); void imx_gpc_set_arm_power_down_timing(u32 sw2iso, u32 sw); diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c index 5d32e35fbe47..4d60005e9277 100644 --- a/arch/arm/mach-imx/gpc.c +++ b/arch/arm/mach-imx/gpc.c @@ -275,6 +275,16 @@ static int __init imx_gpc_init(struct device_node *node, */ OF_DECLARE_2(irqchip, imx_gpc, "fsl,imx6q-gpc", imx_gpc_init); +void __init imx_gpc_check_dt(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-gpc"); + if (WARN_ON(!np || + !of_find_property(np, "interrupt-controller", NULL))) + pr_warn("Outdated DT detected, system is about to crash!!!\n"); +} + #ifdef CONFIG_PM_GENERIC_DOMAINS static void _imx6q_pm_pu_power_off(struct generic_pm_domain *genpd) diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index 6fc2b7e89c6b..e21a693fc984 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -387,6 +387,7 @@ static void __init imx6q_map_io(void) static void __init imx6q_init_irq(void) { + imx_gpc_check_dt(); imx_init_revision_from_anatop(); imx_init_l2cache(); imx_src_init(); diff --git a/arch/arm/mach-imx/mach-imx6sl.c b/arch/arm/mach-imx/mach-imx6sl.c index d39c274910c5..12a1b098fc6a 100644 --- a/arch/arm/mach-imx/mach-imx6sl.c +++ b/arch/arm/mach-imx/mach-imx6sl.c @@ -61,6 +61,7 @@ static void __init imx6sl_init_machine(void) static void __init imx6sl_init_irq(void) { + imx_gpc_check_dt(); imx_init_revision_from_anatop(); imx_init_l2cache(); imx_src_init(); diff --git a/arch/arm/mach-imx/mach-imx6sx.c b/arch/arm/mach-imx/mach-imx6sx.c index 8595f9ea30a0..f17b7004c24b 100644 --- a/arch/arm/mach-imx/mach-imx6sx.c +++ b/arch/arm/mach-imx/mach-imx6sx.c @@ -81,6 +81,7 @@ static void __init imx6sx_init_machine(void) static void __init imx6sx_init_irq(void) { + imx_gpc_check_dt(); imx_init_revision_from_anatop(); imx_init_l2cache(); imx_src_init(); |