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USB: musb: Add new fifo table for a OMAP3 errata 

We have observed MSC data read corruption when USB LAN device is
also connected and it's interface is up.

Silicon team has confirmed an errata where in all the active
transfers should use FIFO space either in first 8K or next 8K.
So far we have observed the issue in above use case scenario.

As a workaround to it, adding a new FIFO config (5) fitting well
within first 8K which can be used for such use cases.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Acked-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Ajay Kumar Gupta 2009-12-28 13:40:34 +02:00 коммит произвёл Greg Kroah-Hartman
Родитель 8f20960cd7
Коммит 3b151526ed
1 изменённых файлов: 34 добавлений и 0 удалений
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34
drivers/usb/musb/musb_core.c
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@ -1095,6 +1095,36 @@ static struct fifo_cfg __initdata mode_4_cfg[] = {
{ .hw_ep_num = 15, .style = FIFO_RXTX, .maxpacket = 1024, },
};
/* mode 5 - fits in 8KB */
static struct fifo_cfg __initdata mode_5_cfg[] = {
{ .hw_ep_num = 1, .style = FIFO_TX, .maxpacket = 512, },
{ .hw_ep_num = 1, .style = FIFO_RX, .maxpacket = 512, },
{ .hw_ep_num = 2, .style = FIFO_TX, .maxpacket = 512, },
{ .hw_ep_num = 2, .style = FIFO_RX, .maxpacket = 512, },
{ .hw_ep_num = 3, .style = FIFO_TX, .maxpacket = 512, },
{ .hw_ep_num = 3, .style = FIFO_RX, .maxpacket = 512, },
{ .hw_ep_num = 4, .style = FIFO_TX, .maxpacket = 512, },
{ .hw_ep_num = 4, .style = FIFO_RX, .maxpacket = 512, },
{ .hw_ep_num = 5, .style = FIFO_TX, .maxpacket = 512, },
{ .hw_ep_num = 5, .style = FIFO_RX, .maxpacket = 512, },
{ .hw_ep_num = 6, .style = FIFO_TX, .maxpacket = 32, },
{ .hw_ep_num = 6, .style = FIFO_RX, .maxpacket = 32, },
{ .hw_ep_num = 7, .style = FIFO_TX, .maxpacket = 32, },
{ .hw_ep_num = 7, .style = FIFO_RX, .maxpacket = 32, },
{ .hw_ep_num = 8, .style = FIFO_TX, .maxpacket = 32, },
{ .hw_ep_num = 8, .style = FIFO_RX, .maxpacket = 32, },
{ .hw_ep_num = 9, .style = FIFO_TX, .maxpacket = 32, },
{ .hw_ep_num = 9, .style = FIFO_RX, .maxpacket = 32, },
{ .hw_ep_num = 10, .style = FIFO_TX, .maxpacket = 32, },
{ .hw_ep_num = 10, .style = FIFO_RX, .maxpacket = 32, },
{ .hw_ep_num = 11, .style = FIFO_TX, .maxpacket = 32, },
{ .hw_ep_num = 11, .style = FIFO_RX, .maxpacket = 32, },
{ .hw_ep_num = 12, .style = FIFO_TX, .maxpacket = 32, },
{ .hw_ep_num = 12, .style = FIFO_RX, .maxpacket = 32, },
{ .hw_ep_num = 13, .style = FIFO_RXTX, .maxpacket = 512, },
{ .hw_ep_num = 14, .style = FIFO_RXTX, .maxpacket = 1024, },
{ .hw_ep_num = 15, .style = FIFO_RXTX, .maxpacket = 1024, },
};
/*
* configure a fifo; for non-shared endpoints, this may be called
@ -1210,6 +1240,10 @@ static int __init ep_config_from_table(struct musb *musb)
cfg = mode_4_cfg;
n = ARRAY_SIZE(mode_4_cfg);
break;
case 5:
cfg = mode_5_cfg;
n = ARRAY_SIZE(mode_5_cfg);
break;
}
printk(KERN_DEBUG "%s: setup fifo_mode %d\n",