linux-kernel - [PATCH 4.17 123/324] ARM: davinci: board-da850-evm: fix WP pin polarity for MMC/SD

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Message-Id: <20180823075002.048895572@linuxfoundation.org>
Date:   Thu, 23 Aug 2018 09:53:09 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Adam Ford <aford173@...il.com>,
        Sekhar Nori <nsekhar@...com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.17 123/324] ARM: davinci: board-da850-evm: fix WP pin polarity for MMC/SD

4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Adam Ford <aford173@...il.com>

[ Upstream commit 1b6fe9798af8cb7d80fad5dd30ee1bcd1e0f51eb ]

When booting from MMC/SD in rw mode on DA850 EVM, the system
crashes because the write protect pin should be active high
and not active low. This patch fixes the polarity of the WP pin.

Fixes: bdf0e8364fd3 ("ARM: davinci: da850-evm: use gpio descriptor for mmc pins")
Signed-off-by: Adam Ford <aford173@...il.com>
Signed-off-by: Sekhar Nori <nsekhar@...com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/arm/mach-davinci/board-da850-evm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -773,7 +773,7 @@ static struct gpiod_lookup_table mmc_gpi
 		GPIO_LOOKUP("davinci_gpio.0", DA850_MMCSD_CD_PIN, "cd",
 			    GPIO_ACTIVE_LOW),
 		GPIO_LOOKUP("davinci_gpio.0", DA850_MMCSD_WP_PIN, "wp",
-			    GPIO_ACTIVE_LOW),
+			    GPIO_ACTIVE_HIGH),
 	},
 };