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From: Roger Quadros <rogerq@ti.com>
To: <t-kristo@ti.com>
Cc: <robh@kernel.org>, <kishon@ti.com>, <nm@ti.com>, <nsekhar@ti.com>,
	<vigneshr@ti.com>, <devicetree@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, Roger Quadros <rogerq@ti.com>
Subject: [PATCH v2 6/6] arm64: dts: k3-j721e-proc-board: Add wait time for sampling Type-C DIR line
Date: Tue, 3 Mar 2020 12:17:22 +0200	[thread overview]
Message-ID: <20200303101722.26052-7-rogerq@ti.com> (raw)
In-Reply-To: <20200303101722.26052-1-rogerq@ti.com>

The Type-C compainon chip on the board needs ~133ms (tCCB_DEFAULT)
to debounce the CC lines in order to detect attach and plug orientation
and reflect the correct DIR status. [1]

On the EVM however we need to wait upto 700ms before sampling the
Type-C DIR line else we can get incorrect direction state.

[1] http://www.ti.com/lit/ds/symlink/tusb321.pdf

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
---
 arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
index f057322b8c11..964a46e7af5e 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
@@ -325,6 +325,7 @@
 
 &serdes_wiz3 {
 	typec-dir-gpios = <&main_gpio1 3 GPIO_ACTIVE_HIGH>;
+	typec-dir-debounce-ms = <700>;	/* TUSB321, tCCB_DEFAULT 133 ms */
 };
 
 &serdes3 {
-- 
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki


      parent reply	other threads:[~2020-03-03 10:17 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-03 10:17 [PATCH v2 0/6] arm64: ti: k3-j721e: Add SERDES PHY and USB3.0 support Roger Quadros
2020-03-03 10:17 ` [PATCH v2 1/6] dt-bindings: syscon: Add TI's J721E specific compatible string Roger Quadros
2020-03-03 10:17 ` [PATCH v2 2/6] arm64: dts: ti: k3-j721e-main: Add WIZ and SERDES PHY nodes Roger Quadros
2020-03-03 10:17 ` [PATCH v2 3/6] arm64: dts: ti: k3-j721e-main: Add serdes_ln_ctrl node to select SERDES lane mux Roger Quadros
2020-03-10 21:09   ` Rob Herring
2020-03-19 11:37     ` Kishon Vijay Abraham I
2020-04-23  7:03       ` Roger Quadros
2020-04-24 20:15       ` Rob Herring
2020-03-03 10:17 ` [PATCH v2 4/6] arm64: dts: ti: k3-j721e-main.dtsi: Add USB to SERDES MUX Roger Quadros
2020-03-03 10:17 ` [PATCH v2 5/6] arm64: dts: ti: k3-j721e: Enable Super-Speed support for USB0 Roger Quadros
2020-03-03 10:17 ` Roger Quadros [this message]

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