[PATCH v6 12/17] pinctrl: airoha: an7583: add support for npu_uart pinmux

[Mikhail Kshevetskiy]

Add support for uart pin function for npu_uart pin group.
Also update device tree binding schema.

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy at iopsys.eu>
---
 .../bindings/pinctrl/airoha,an7583-pinctrl.yaml      |  2 +-
 drivers/pinctrl/airoha/pinctrl-an7583.c              | 12 +++++++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/airoha,an7583-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/airoha,an7583-pinctrl.yaml
index bedcb6374f1a..0a217429b2cb 100644
--- a/Documentation/devicetree/bindings/pinctrl/airoha,an7583-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/airoha,an7583-pinctrl.yaml
@@ -115,7 +115,7 @@ patternProperties:
                 groups:
                   items:
                     enum: [uart2, uart2_cts_rts, hsuart, hsuart_cts_rts,
-                           uart4, uart5]
+                           uart4, uart5, npu_uart]
                   maxItems: 2
           - if:
               properties:
diff --git a/drivers/pinctrl/airoha/pinctrl-an7583.c b/drivers/pinctrl/airoha/pinctrl-an7583.c
index b0b1dbbb4d76..9b5c7ea5e547 100644
--- a/drivers/pinctrl/airoha/pinctrl-an7583.c
+++ b/drivers/pinctrl/airoha/pinctrl-an7583.c
@@ -68,6 +68,7 @@
 #define REG_NPU_UART_EN				0x0224
 #define JTAG_UDI_EN_MASK			BIT(4)
 #define JTAG_DFD_EN_MASK			BIT(3)
+#define NPU_UART_EN_MASK			BIT(2)
 
 #define REG_FORCE_GPIO_EN			0x0228
 #define FORCE_GPIO_EN(n)			BIT(n)
@@ -569,7 +570,7 @@ static const char *const sipo_groups[] = { "sipo", "sipo_rclk" };
 static const char *const mdio_groups[] = { "mdio" };
 static const char *const uart_groups[] = {
 	"uart2", "uart2_cts_rts", "hsuart", "hsuart_cts_rts",
-	"uart4", "uart5"
+	"uart4", "uart5", "npu_uart"
 };
 static const char *const jtag_groups[] = { "jtag_udi", "jtag_dfd" };
 static const char *const pcm_groups[] = { "pcm1", "pcm2" };
@@ -754,6 +755,15 @@ static const struct airoha_pinctrl_func_group uart_func_group[] = {
 			GPIO_UART5_MODE_MASK
 		},
 		.regmap_size = 1,
+	}, {
+		.name = "npu_uart",
+		.regmap[0] = {
+			AIROHA_FUNC_MUX,
+			REG_NPU_UART_EN,
+			NPU_UART_EN_MASK,
+			NPU_UART_EN_MASK
+		},
+		.regmap_size = 1,
 	},
 };
 
-- 
2.53.0