linux-kernel - [PATCH] gpio: aspeed: fix ast2600 bank properties

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Date:   Wed, 16 Sep 2020 13:42:16 -0700
From:   rentao.bupt@...il.com
To:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>, linux-gpio@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        openbmc@...ts.ozlabs.org, taoren@...com
Cc:     Tao Ren <rentao.bupt@...il.com>
Subject: [PATCH] gpio: aspeed: fix ast2600 bank properties

From: Tao Ren <rentao.bupt@...il.com>

GPIO_U is mapped to the least significant byte of input/output mask, and
the byte in "output" mask should be 0 because GPIO_U is input only. All
the other bits need to be 1 because GPIO_V/W/X support both input and
output modes.

Similarly, GPIO_Y/Z are mapped to the 2 least significant bytes, and the
according bits need to be 1 because GPIO_Y/Z support both input and
output modes.

Fixes: ab4a85534c3e ("gpio: aspeed: Add in ast2600 details to Aspeed driver")
Signed-off-by: Tao Ren <rentao.bupt@...il.com>
---
 drivers/gpio/gpio-aspeed.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
index 879db23d8454..d07bf2c3f136 100644
--- a/drivers/gpio/gpio-aspeed.c
+++ b/drivers/gpio/gpio-aspeed.c
@@ -1114,8 +1114,8 @@ static const struct aspeed_gpio_config ast2500_config =
 
 static const struct aspeed_bank_props ast2600_bank_props[] = {
 	/*     input	  output   */
-	{5, 0xffffffff,  0x0000ffff}, /* U/V/W/X */
-	{6, 0xffff0000,  0x0fff0000}, /* Y/Z */
+	{5, 0xffffffff,  0xffffff00}, /* U/V/W/X */
+	{6, 0x0000ffff,  0x0000ffff}, /* Y/Z */
 	{ },
 };
 
-- 
2.17.1