This is a note to let you know that I've just added the patch titled
fsl-usb: do not test for PHY_CLK_VALID bit on controller version 1.6
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
fsl-usb-do-not-test-for-phy_clk_valid-bit-on-controller-version-1.6.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d183c81929beeba842b74422f754446ef2b8b49c Mon Sep 17 00:00:00 2001
From: Nikita Yushchenko <nyushchenko@xxxxxxxxxxxxx>
Date: Mon, 28 Apr 2014 19:23:44 +0400
Subject: fsl-usb: do not test for PHY_CLK_VALID bit on controller version 1.6
From: Nikita Yushchenko <nyushchenko@xxxxxxxxxxxxx>
commit d183c81929beeba842b74422f754446ef2b8b49c upstream.
Per reference manuals of Freescale P1020 and P2020 SoCs, USB controller
present in these SoCs has bit 17 of USBx_CONTROL register marked as
Reserved - there is no PHY_CLK_VALID bit there.
Testing for this bit in ehci_fsl_setup_phy() behaves differently on two
P1020RDB boards available here - on one board test passes and fsl-usb
init succeeds, but on other board test fails, causing fsl-usb init to
fail.
This patch changes ehci_fsl_setup_phy() not to test PHY_CLK_VALID on
controller version 1.6 that (per manual) does not have this bit.
Signed-off-by: Nikita Yushchenko <nyushchenko@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/host/ehci-fsl.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -261,7 +261,8 @@ static int ehci_fsl_setup_phy(struct usb
break;
}
- if (pdata->have_sysif_regs && pdata->controller_ver &&
+ if (pdata->have_sysif_regs &&
+ pdata->controller_ver > FSL_USB_VER_1_6 &&
(phy_mode == FSL_USB2_PHY_ULPI)) {
/* check PHY_CLK_VALID to get phy clk valid */
if (!spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) &
Patches currently in stable-queue which might be from nyushchenko@xxxxxxxxxxxxx are
queue-3.10/fsl-usb-do-not-test-for-phy_clk_valid-bit-on-controller-version-1.6.patch
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