linux-kernel - [PATCH 4.19 086/346] ARM: dts: exynos: fix USB 3.0 pins supply being turned off on Odroid XU

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Message-Id: <20201228124923.960585449@linuxfoundation.org>
Date:   Mon, 28 Dec 2020 13:46:45 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Krzysztof Kozlowski <krzk@...nel.org>,
        Gabriel Ribba Esteva <gabriel.ribbae@...il.com>
Subject: [PATCH 4.19 086/346] ARM: dts: exynos: fix USB 3.0 pins supply being turned off on Odroid XU

From: Krzysztof Kozlowski <krzk@...nel.org>

commit bd7e7ff56feea7810df900fb09c9741d259861d9 upstream.

On Odroid XU LDO12 and LDO15 supplies the power to USB 3.0 blocks but
the GPK GPIO pins are supplied by LDO7 (VDDQ_LCD).  LDO7 also supplies
GPJ GPIO pins.

The Exynos pinctrl driver does not take any supplies, so to have entire
GPIO block always available, make the regulator always on.

Fixes: 88644b4c750b ("ARM: dts: exynos: Configure PWM, usb3503, PMIC and thermal on Odroid XU board")
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
Cc: <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20201015182044.480562-3-krzk@kernel.org
Tested-by: Gabriel Ribba Esteva <gabriel.ribbae@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/boot/dts/exynos5410-odroidxu.dts |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/arm/boot/dts/exynos5410-odroidxu.dts
+++ b/arch/arm/boot/dts/exynos5410-odroidxu.dts
@@ -324,6 +324,8 @@
 				regulator-name = "vddq_lcd";
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <1800000>;
+				/* Supplies also GPK and GPJ */
+				regulator-always-on;
 			};
 
 			ldo8_reg: LDO8 {