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authorAnton Vorontsov <avorontsov@ru.mvista.com>2009-02-19 19:02:23 +0300
committerKumar Gala <galak@kernel.crashing.org>2009-03-09 09:25:37 -0500
commitc026c98739c7e435440e76cbcd96e0f8ebeeada0 (patch)
tree98f0ddc17ef2a3123888f2259b1999b32c905909 /arch/powerpc/platforms
parent30c404699dd650f213d480d263c775915a0e1297 (diff)
powerpc/83xx: Do not configure or probe disabled FSL DR USB controllers
On MPC837X CPUs Dual-Role USB isn't always available (for example DR USB pins can be muxed away to eSDHC). U-Boot adds status = "disabled" property into the DR USB nodes to indicate that we must not try to configure or probe Dual-Role USB, otherwise we'll break eSDHC support on targets with MPC837X CPUs. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/83xx/usb.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/83xx/usb.c b/arch/powerpc/platforms/83xx/usb.c
index cc99c280aad..11e1fac17c7 100644
--- a/arch/powerpc/platforms/83xx/usb.c
+++ b/arch/powerpc/platforms/83xx/usb.c
@@ -14,6 +14,7 @@
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/errno.h>
+#include <linux/of.h>
#include <asm/io.h>
#include <asm/prom.h>
@@ -210,7 +211,7 @@ int mpc837x_usb_cfg(void)
int ret = 0;
np = of_find_compatible_node(NULL, NULL, "fsl-usb2-dr");
- if (!np)
+ if (!np || !of_device_is_available(np))
return -ENODEV;
prop = of_get_property(np, "phy_type", NULL);