linux-kernel - [PATCH 3.18 049/144] phy-sun4i-usb: Change disconnect threshold value for sun6i

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Message-Id: <20181108215058.403016948@linuxfoundation.org>
Date:   Thu,  8 Nov 2018 13:50:20 -0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 3.18 049/144] phy-sun4i-usb: Change disconnect threshold value for sun6i

3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit 372400344afb60e275a271f3f5ccce17af0e45cb ]

The allwinner SDK uses a value of 3 for the disconnect threshold setting on
sun6i, do the same in the kernel.

In my previous experience with sun5i problems getting the threshold right
is important to avoid usb2 devices being unplugged sometimes going unnoticed.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/phy/phy-sun4i-usb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index 0baf5efc8a40..1a2b045d6a67 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -240,7 +240,8 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
 	else
 		data->num_phys = 3;
 
-	if (of_device_is_compatible(np, "allwinner,sun4i-a10-usb-phy"))
+	if (of_device_is_compatible(np, "allwinner,sun4i-a10-usb-phy") ||
+	    of_device_is_compatible(np, "allwinner,sun6i-a31-usb-phy"))
 		data->disc_thresh = 3;
 	else
 		data->disc_thresh = 2;
-- 
2.17.1