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[RESEND,10/10] usb: ehci-generic: support reset control for generic EHCI

Message ID 1474424946-16085-11-git-send-email-yamada.masahiro@socionext.com
State Accepted
Commit 8824cfc19a6e4ae23ca8006bb22b7b6f839b09a8
Headers show

Commit Message

Masahiro Yamada Sept. 21, 2016, 2:29 a.m. UTC 
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>

---

 drivers/usb/host/ehci-generic.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

-- 
1.9.1

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Patch

diff --git a/drivers/usb/host/ehci-generic.c b/drivers/usb/host/ehci-generic.c
index e0377ca..34d9f71 100644
--- a/drivers/usb/host/ehci-generic.c
+++ b/drivers/usb/host/ehci-generic.c
@@ -6,6 +6,7 @@ 
 
 #include <common.h>
 #include <clk.h>
+#include <reset.h>
 #include <asm/io.h>
 #include <dm.h>
 #include "ehci.h"
@@ -37,6 +38,18 @@  static int ehci_usb_probe(struct udevice *dev)
 		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);
 	hcor = (struct ehci_hcor *)((uintptr_t)hccr +
 				    HC_LENGTH(ehci_readl(&hccr->cr_capbase)));