[PATCH u-boot v2019.04-aspeed-openbmc] pinctrl: ast2400: add support for TXD3/RXD3 pins

[Zev Weiss]

In order to support putting the u-boot console on UART3 of the
ast2400, this commit adds support for setting bits 22 and 23 of SCU80
to enable TXD3 and RXD3 on pins C14 and B14, respectively.

Signed-off-by: Zev Weiss <zev at bewilderbeest.net>
---
 drivers/pinctrl/aspeed/pinctrl_ast2400.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/pinctrl/aspeed/pinctrl_ast2400.c b/drivers/pinctrl/aspeed/pinctrl_ast2400.c
index 7a6c2892f469..a8a5ff517108 100644
--- a/drivers/pinctrl/aspeed/pinctrl_ast2400.c
+++ b/drivers/pinctrl/aspeed/pinctrl_ast2400.c
@@ -125,6 +125,14 @@ static struct aspeed_sig_desc spi1_link[] = {
 	{ 0x70, BIT(12), 0},
 };
 
+static struct aspeed_sig_desc txd3_link[] = {
+	{ 0x80, BIT(22), 0},
+};
+
+static struct aspeed_sig_desc rxd3_link[] = {
+	{ 0x80, BIT(23), 0},
+};
+
 static const struct aspeed_group_config ast2400_groups[] = {
 	{ "MAC1LINK", 1, mac1_link },
 	{ "MAC2LINK", 1, mac2_link },
@@ -146,6 +154,8 @@ static const struct aspeed_group_config ast2400_groups[] = {
 	{ "SD1", 1, sdio1_link },
 	{ "SPI1", 1, spi1_link},
 	{ "SPI1CS1", 1, spi1cs1_link},
+	{ "TXD3", 1, txd3_link },
+	{ "RXD3", 1, rxd3_link },
 };
 
 static int ast2400_pinctrl_get_groups_count(struct udevice *dev)
-- 
2.34.1