Increase the timeout for disabling an IP block to five milliseconds. This is to handle the usb_host_fs idle latency, which takes almost four milliseconds after a host controller reset. This is the second of two patches needed to resolve the following boot warning: omap_hwmod: usb_host_fs: _wait_target_disable failed Signed-off-by: Paul Walmsley <paul@xxxxxxxxx> Cc: Tero Kristo <t-kristo@xxxxxx> --- arch/arm/mach-omap2/cm.h | 11 +++++++++++ arch/arm/mach-omap2/cminst44xx.c | 4 ++-- arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 1 + 3 files changed, 14 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/cm.h b/arch/arm/mach-omap2/cm.h index a7bc096..f24e3f7 100644 --- a/arch/arm/mach-omap2/cm.h +++ b/arch/arm/mach-omap2/cm.h @@ -22,4 +22,15 @@ */ #define MAX_MODULE_READY_TIME 2000 +/* + * MAX_MODULE_DISABLE_TIME: max duration in microseconds to wait for + * the PRCM to request that a module enter the inactive state in the + * case of OMAP2 & 3. In the case of OMAP4 this is the max duration + * in microseconds for the module to reach the inactive state from + * a functional state. + * XXX FSUSB on OMAP4430 takes ~4ms to idle after reset during + * kernel init. + */ +#define MAX_MODULE_DISABLE_TIME 5000 + #endif diff --git a/arch/arm/mach-omap2/cminst44xx.c b/arch/arm/mach-omap2/cminst44xx.c index 8c86d29..1a39945 100644 --- a/arch/arm/mach-omap2/cminst44xx.c +++ b/arch/arm/mach-omap2/cminst44xx.c @@ -313,9 +313,9 @@ int omap4_cminst_wait_module_idle(u8 part, u16 inst, s16 cdoffs, u16 clkctrl_off omap_test_timeout((_clkctrl_idlest(part, inst, cdoffs, clkctrl_offs) == CLKCTRL_IDLEST_DISABLED), - MAX_MODULE_READY_TIME, i); + MAX_MODULE_DISABLE_TIME, i); - return (i < MAX_MODULE_READY_TIME) ? 0 : -EBUSY; + return (i < MAX_MODULE_DISABLE_TIME) ? 0 : -EBUSY; } /** diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c index b8b28be..3613054 100644 --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c @@ -33,6 +33,7 @@ #include <plat/mmc.h> #include <plat/dmtimer.h> #include <plat/common.h> +#include <plat/usb.h> #include "omap_hwmod_common_data.h" -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
