From: Marek Szyprowski <m.szyprowski@samsung.com>
To: linux-usb@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Stefan Agner <stefan@agner.ch>,
Chunfeng Yun <chunfeng.yun@mediatek.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Subject: [PATCH v2 3/4] ARM: dts: sun8i: a83t: Correct USB3503 GPIOs polarity
Date: Wed, 11 Dec 2019 15:46:37 +0100 [thread overview]
Message-ID: <20191211144638.24676-4-m.szyprowski@samsung.com> (raw)
In-Reply-To: <20191211144638.24676-1-m.szyprowski@samsung.com>
Current USB3503 driver ignores GPIO polarity and always operates as if the
GPIO lines were flagged as ACTIVE_HIGH. Fix the polarity for the existing
USB3503 chip applications to match the chip specification and common
convention for naming the pins. The only pin, which has to be ACTIVE_LOW
is the reset pin. The remaining are ACTIVE_HIGH. This change allows later
to fix the USB3503 driver to properly use generic GPIO bindings and read
polarity from DT.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
arch/arm/boot/dts/sun8i-a83t-cubietruck-plus.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/sun8i-a83t-cubietruck-plus.dts b/arch/arm/boot/dts/sun8i-a83t-cubietruck-plus.dts
index fb928503ad45..d9be511f054f 100644
--- a/arch/arm/boot/dts/sun8i-a83t-cubietruck-plus.dts
+++ b/arch/arm/boot/dts/sun8i-a83t-cubietruck-plus.dts
@@ -101,7 +101,7 @@
initial-mode = <1>; /* initialize in HUB mode */
disabled-ports = <1>;
intn-gpios = <&pio 7 5 GPIO_ACTIVE_HIGH>; /* PH5 */
- reset-gpios = <&pio 4 16 GPIO_ACTIVE_HIGH>; /* PE16 */
+ reset-gpios = <&pio 4 16 GPIO_ACTIVE_LOW>; /* PE16 */
connect-gpios = <&pio 4 17 GPIO_ACTIVE_HIGH>; /* PE17 */
refclk-frequency = <19200000>;
};
--
2.17.1
next prev parent reply other threads:[~2019-12-11 14:47 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20191211144647eucas1p23d85dee21029f864076eece98aadd525@eucas1p2.samsung.com>
2019-12-11 14:46 ` [PATCH v2 0/4] USB3503: correct GPIOs polarity and update the driver Marek Szyprowski
2019-12-11 14:46 ` [PATCH v2 1/4] ARM: dts: exynos: Correct USB3503 GPIOs polarity Marek Szyprowski
2019-12-12 20:21 ` Krzysztof Kozlowski
2019-12-11 14:46 ` [PATCH v2 2/4] ARM: dts: qcom: " Marek Szyprowski
2019-12-11 14:46 ` Marek Szyprowski [this message]
2019-12-11 14:46 ` [PATCH v2 4/4] usb: usb3503: Convert to use GPIO descriptors Marek Szyprowski
[not found] <CGME20191211145222eucas1p1d761af59e04017ddadbdbd1cceb59b1f@eucas1p1.samsung.com>
2019-12-11 14:50 ` [PATCH v2 0/4 RESEND] USB3503: correct GPIOs polarity and update the driver Marek Szyprowski
2019-12-11 14:52 ` [PATCH v2 3/4] ARM: dts: sun8i: a83t: Correct USB3503 GPIOs polarity Marek Szyprowski
2019-12-13 8:08 ` Chen-Yu Tsai
2019-12-17 8:37 ` Maxime Ripard
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