linux-kernel - [PATCH v1 01/10] ARM: tegra: acer-a500: Improve microphone detection

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Date:   Mon, 10 May 2021 23:25:51 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Agneli <poczt@...tonmail.ch>, Paul Fertser <fercerpav@...il.com>,
        Svyatoslav Ryhel <clamor95@...il.com>
Cc:     linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 01/10] ARM: tegra: acer-a500: Improve microphone detection

Use edge-triggered interrupt and set delay to 100ms for microphone hook
detection. This doesn't fix any known problems, but there is a smaller
chance to miss insertion of the microphone now, which previously happened
rarely.

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 arch/arm/boot/dts/tegra20-acer-a500-picasso.dts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts b/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
index 2298fc034183..d7d97b7e4794 100644
--- a/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
+++ b/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
@@ -420,11 +420,14 @@ wm8903: audio-codec@1a {
 			reg = <0x1a>;
 
 			interrupt-parent = <&gpio>;
-			interrupts = <TEGRA_GPIO(X, 3) IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <TEGRA_GPIO(X, 3) IRQ_TYPE_EDGE_BOTH>;
 
 			gpio-controller;
 			#gpio-cells = <2>;
 
+			micdet-cfg = <0>;
+			micdet-delay = <100>;
+
 			gpio-cfg = <
 				0x0000 /* MIC_LR_OUT#    GPIO, output, low */
 				0x0000 /* FM2018-enable  GPIO, output, low */
-- 
2.30.2