commit aa34e13346cf727197981c599f688b406005049a
author Niklas Cassel <niklas.cassel@wdc.com> Tue Mar 01 10:35:45 2022 +0000
committer Leo Yu-Chi Liang <ycliang@andestech.com> Tue Mar 15 17:43:11 2022 +0800
tree 43cab810cd7d438c54747fbebc39b1dfe2762a26
parent daaf18267f31857df92e83d51a9876742061b495

pinctrl: k210: Fix bias-pull-up

Using bias-pull-up would actually cause the pin to have its pull-down
enabled. Fix this.

Original Linux patch by Sean Anderson:
https://lore.kernel.org/linux-gpio/20220209182822.640905-1-seanga2@gmail.com/

Fixes: 7224d5ccf8e1 ("pinctrl: Add support for Kendryte K210 FPIOA")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>

drivers/pinctrl/pinctrl-k210.c

diff --git a/drivers/pinctrl/pinctrl-k210.c b/drivers/pinctrl/pinctrl-k210.c
index f809149..13f0a34 100644
--- a/drivers/pinctrl/pinctrl-k210.c
+++ b/drivers/pinctrl/pinctrl-k210.c
@@ -536,7 +536,7 @@
 		break;
 	case PIN_CONFIG_BIAS_PULL_UP:
 		if (argument)
-			val |= K210_PC_PD;
+			val |= K210_PC_PU;
 		else
 			return -EINVAL;
 		break;