summaryrefslogtreecommitdiffstats
path: root/drivers/usb/host/fsl-mph-dr-of.c
diff options
context:
space:
mode:
authorRamneek Mehresh <ramneek.mehresh@freescale.com>2019-06-24 09:22:18 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-07-03 18:52:20 +0200
commitc1f9d2e4110cbcbbba844406e58ed41120166a73 (patch)
tree3b095f9d88fd101a59129cb995da472b2955cb3a /drivers/usb/host/fsl-mph-dr-of.c
parentusb: linux/fsl_device: Add platform member has_fsl_erratum_a006918 (diff)
downloadlinux-c1f9d2e4110cbcbbba844406e58ed41120166a73.tar.xz
linux-c1f9d2e4110cbcbbba844406e58ed41120166a73.zip
usb: host: Stops USB controller init if PLL fails to lock
USB erratum-A006918 workaround tries to start internal PHY inside uboot (when PLL fails to lock). However, if the workaround also fails, then USB initialization is also stopped inside Linux. Erratum-A006918 workaround failure creates "fsl,erratum_a006918" node in device-tree. Presence of this node in device-tree is used to stop USB controller initialization in Linux Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com> Signed-off-by: Suresh Gupta <suresh.gupta@freescale.com> Signed-off-by: Yinbo Zhu <yinbo.zhu@nxp.com> Link: https://lore.kernel.org/r/20190624072219.15258-4-yinbo.zhu@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to '')
-rw-r--r--drivers/usb/host/fsl-mph-dr-of.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c
index 4f8b8a08c914..762b97600ab0 100644
--- a/drivers/usb/host/fsl-mph-dr-of.c
+++ b/drivers/usb/host/fsl-mph-dr-of.c
@@ -224,13 +224,14 @@ static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
of_property_read_bool(np, "fsl,usb-erratum-a005275");
pdata->has_fsl_erratum_a005697 =
of_property_read_bool(np, "fsl,usb_erratum-a005697");
+ pdata->has_fsl_erratum_a006918 =
+ of_property_read_bool(np, "fsl,usb_erratum-a006918");
if (of_get_property(np, "fsl,usb_erratum_14", NULL))
pdata->has_fsl_erratum_14 = 1;
else
pdata->has_fsl_erratum_14 = 0;
-
/*
* Determine whether phy_clk_valid needs to be checked
* by reading property in device tree