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authorPeter Korsgaard <jacmet@sunsite.dk>2009-06-09 13:43:32 +0200
committerKumar Gala <galak@kernel.crashing.org>2009-06-15 21:45:31 -0500
commitb7d66c88c968379ebe683a28c4005895497ebbad (patch)
tree58997c1d300f4f90c1b63479aec9dd8c1f55c054 /arch/powerpc/platforms
parent4dc2a6cf82746c1e632aad0cd38615a35f8df075 (diff)
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powerpc/mpc83xx: Fix usb mux setup for mpc834x
usb0 and usb1 mux settings in the sicrl register were swapped (twice!) in mpc834x_usb_cfg(), leading to various strange issues with fsl-ehci and full speed devices. The USB port config on mpc834x is done using 2 muxes: Port 0 is always used for MPH port 0, and port 1 can either be used for MPH port 1 or DR (unless DR uses UTMI phy or OTG, then it uses both ports) - See 8349 RM figure 1-4.. mpc8349_usb_cfg() had this inverted for the DR, and it also had the bit positions of the usb0 / usb1 mux settings swapped. It would basically work if you specified port1 instead of port0 for the MPH controller (and happened to use ULPI phys), which is what all the 834x dts have done, even though that configuration is physically invalid. Instead fix mpc8349_usb_cfg() and adjust the dts files to match reality. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/83xx/mpc83xx.h4
-rw-r--r--arch/powerpc/platforms/83xx/usb.c10
2 files changed, 7 insertions, 7 deletions
diff --git a/arch/powerpc/platforms/83xx/mpc83xx.h b/arch/powerpc/platforms/83xx/mpc83xx.h
index 83cfe51..d1dc5b0 100644
--- a/arch/powerpc/platforms/83xx/mpc83xx.h
+++ b/arch/powerpc/platforms/83xx/mpc83xx.h
@@ -22,8 +22,8 @@
/* system i/o configuration register low */
#define MPC83XX_SICRL_OFFS 0x114
#define MPC834X_SICRL_USB_MASK 0x60000000
-#define MPC834X_SICRL_USB0 0x40000000
-#define MPC834X_SICRL_USB1 0x20000000
+#define MPC834X_SICRL_USB0 0x20000000
+#define MPC834X_SICRL_USB1 0x40000000
#define MPC831X_SICRL_USB_MASK 0x00000c00
#define MPC831X_SICRL_USB_ULPI 0x00000800
#define MPC8315_SICRL_USB_MASK 0x000000fc
diff --git a/arch/powerpc/platforms/83xx/usb.c b/arch/powerpc/platforms/83xx/usb.c
index 11e1fac..3ba4bb7 100644
--- a/arch/powerpc/platforms/83xx/usb.c
+++ b/arch/powerpc/platforms/83xx/usb.c
@@ -47,25 +47,25 @@ int mpc834x_usb_cfg(void)
sccr |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */
prop = of_get_property(np, "phy_type", NULL);
+ port1_is_dr = 1;
if (prop && (!strcmp(prop, "utmi") ||
!strcmp(prop, "utmi_wide"))) {
sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1;
sicrh |= MPC834X_SICRH_USB_UTMI;
- port1_is_dr = 1;
+ port0_is_dr = 1;
} else if (prop && !strcmp(prop, "serial")) {
dr_mode = of_get_property(np, "dr_mode", NULL);
if (dr_mode && !strcmp(dr_mode, "otg")) {
sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1;
- port1_is_dr = 1;
+ port0_is_dr = 1;
} else {
- sicrl |= MPC834X_SICRL_USB0;
+ sicrl |= MPC834X_SICRL_USB1;
}
} else if (prop && !strcmp(prop, "ulpi")) {
- sicrl |= MPC834X_SICRL_USB0;
+ sicrl |= MPC834X_SICRL_USB1;
} else {
printk(KERN_WARNING "834x USB PHY type not supported\n");
}
- port0_is_dr = 1;
of_node_put(np);
}
np = of_find_compatible_node(NULL, NULL, "fsl-usb2-mph");