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From: Neil Armstrong <narmstrong@baylibre.com>
To: vkoul@kernel.org, kishon@ti.com
Cc: Neil Armstrong <narmstrong@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Kevin Hilman <khilman@baylibre.com>,
	linux-kernel@vger.kernel.org, linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3] phy: amlogic: phy-meson-gxl-usb2: keep ID pull-up even in Host mode
Date: Fri, 20 Nov 2020 16:38:55 +0100	[thread overview]
Message-ID: <20201120153855.3920757-1-narmstrong@baylibre.com> (raw)

In order to keep OTG ID detection even when in Host mode, the ID line of
the PHY (if the current phy is an OTG one) pull-up should be kept
enable in both modes.

This fixes OTG switch on GXL, GXM & AXG platforms, otherwise once switched
to Host, the ID detection doesn't work anymore to switch back to Device.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 drivers/phy/amlogic/phy-meson-gxl-usb2.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c
index 875afb2672c7..2b3c0d730f20 100644
--- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c
+++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c
@@ -158,7 +158,8 @@ static int phy_meson_gxl_usb2_set_mode(struct phy *phy,
 				   U2P_R0_DM_PULLDOWN);
 		regmap_update_bits(priv->regmap, U2P_R0, U2P_R0_DP_PULLDOWN,
 				   U2P_R0_DP_PULLDOWN);
-		regmap_update_bits(priv->regmap, U2P_R0, U2P_R0_ID_PULLUP, 0);
+		regmap_update_bits(priv->regmap, U2P_R0, U2P_R0_ID_PULLUP,
+				   U2P_R0_ID_PULLUP);
 		break;
 
 	case PHY_MODE_USB_DEVICE:
-- 
2.25.1


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             reply	other threads:[~2020-11-20 15:39 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-20 15:38 Neil Armstrong [this message]
2020-11-30 11:01 ` [PATCH v3] phy: amlogic: phy-meson-gxl-usb2: keep ID pull-up even in Host mode Vinod Koul

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