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usb: ehci-generic: support reset control for generic EHCI 

This driver is designed in a generic manner, so resets should be
handled generically as well.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2016-09-21 11:29:02 +09:00 committed by Tom Rini
parent 4815db87f5
commit 8824cfc19a
1 changed files with 13 additions and 0 deletions
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13
drivers/usb/host/ehci-generic.c
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@ -6,6 +6,7 @@
#include <common.h> #include <common.h>
#include <clk.h> #include <clk.h>
#include <reset.h>
#include <asm/io.h> #include <asm/io.h>
#include <dm.h> #include <dm.h>
#include "ehci.h" #include "ehci.h"
@ -37,6 +38,18 @@ static int ehci_usb_probe(struct udevice *dev)
clk_free(&clk); clk_free(&clk);
} }
for (i = 0; ; i++) {
struct reset_ctl reset;
int ret;
ret = reset_get_by_index(dev, i, &reset);
if (ret < 0)
break;
if (reset_deassert(&reset))
printf("failed to deassert reset %d\n", i);
reset_free(&reset);
}
hccr = map_physmem(dev_get_addr(dev), 0x100, MAP_NOCACHE); hccr = map_physmem(dev_get_addr(dev), 0x100, MAP_NOCACHE);
hcor = (struct ehci_hcor *)((uintptr_t)hccr + hcor = (struct ehci_hcor *)((uintptr_t)hccr +
HC_LENGTH(ehci_readl(&hccr->cr_capbase))); HC_LENGTH(ehci_readl(&hccr->cr_capbase)));