Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1205250

[PATCH 05/19] phy-sun4i-usb: Swap check for disconnect threshold

From Kishon Vijay Abraham I <kishon@ti.com>
Newsgroups linux.kernel
Subject [PATCH 05/19] phy-sun4i-usb: Swap check for disconnect threshold
Date 2015-08-11 18:10 +0200
Message-ID <pWkhI-1Fq-29@gated-at.bofh.it> (permalink)
References <pWk82-1c5-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw


From: Hans de Goede <hdegoede@redhat.com>

Before this commit the code for determining the disconnect threshold was
checking for "allwinner,sun4i-a10-usb-phy" or "allwinner,sun6i-a31-usb-phy"
assuming that those where the exception and then newer SoCs would use a
disconnect threshold of 2 like sun7i does. But it turns out that newer
SoCs use a disconnect threshold of 3 and sun5i and sun7i are the
exceptions, so check for those instead.

Here are the settings from the various Allwinner SDK sources:
 sun4i-a10: USBC_Phy_Write(usbc_no, 0x2a, 3, 2);
 sun5i-a13: USBC_Phy_Write(usbc_no, 0x2a, 2, 2);
 sun6i-a31: USBC_Phy_Write(usbc_no, 0x2a, 3, 2);
 sun7i-a20: USBC_Phy_Write(usbc_no, 0x2a, 2, 2);
 sun8i-a23: USBC_Phy_Write(usbc_no, 0x2a, 3, 2);
 sun8i-h3:  USBC_Phy_Write(usbc_no, 0x2a, 3, 2);
 sun9i-a80: USBC_Phy_Write(usbc_no, 0x2a, 3, 2);

Note this commit makes no functional changes as currently we only support
sun4i - sun7i.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
 drivers/phy/phy-sun4i-usb.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index a6ea2e6..50ecab9 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -447,11 +447,11 @@ 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") ||
-	    of_device_is_compatible(np, "allwinner,sun6i-a31-usb-phy"))
-		data->disc_thresh = 3;
-	else
+	if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") ||
+	    of_device_is_compatible(np, "allwinner,sun7i-a20-usb-phy"))
 		data->disc_thresh = 2;
+	else
+		data->disc_thresh = 3;
 
 	if (of_device_is_compatible(np, "allwinner,sun6i-a31-usb-phy"))
 		dedicated_clocks = true;
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

[GIT PULL 00/19] phy: for 4.3 Kishon Vijay Abraham I <kishon@ti.com> - 2015-08-11 18:00 +0200
  [PATCH 09/19] phy-sun4i-usb: Add support for monitoring vbus via a power-supply Kishon Vijay Abraham I <kishon@ti.com> - 2015-08-11 18:10 +0200
  [PATCH 11/19] phy: berlin: Do not use sata name in usb phy driver Kishon Vijay Abraham I <kishon@ti.com> - 2015-08-11 18:10 +0200
  [PATCH 03/19] phy-sun4i-usb: Add id and vbus detection support for the otg phy (phy0) Kishon Vijay Abraham I <kishon@ti.com> - 2015-08-11 18:10 +0200
  [PATCH 13/19] phy: Drop owner assignment from i2c_driver Kishon Vijay Abraham I <kishon@ti.com> - 2015-08-11 18:10 +0200
  [PATCH 05/19] phy-sun4i-usb: Swap check for disconnect threshold Kishon Vijay Abraham I <kishon@ti.com> - 2015-08-11 18:10 +0200
  [PATCH 01/19] phy: add lpc18xx usb otg phy driver Kishon Vijay Abraham I <kishon@ti.com> - 2015-08-11 18:10 +0200
  [PATCH 07/19] phy-sun4i-usb: Add support for the usb-phys on the sun8i-a33 SoC Kishon Vijay Abraham I <kishon@ti.com> - 2015-08-11 18:10 +0200
  Re: [GIT PULL 00/19] phy: for 4.3 Greg KH <gregkh@linuxfoundation.org> - 2015-08-15 02:00 +0200

csiph-web