From 620edc1ba3e18c900580f642f5d26f62f729812c Mon Sep 17 00:00:00 2001
From: diijkstra <16804536+diijkstra@users.noreply.github.com>
Date: Sun, 1 Feb 2026 13:34:29 +0100
Subject: [PATCH] Initialize GPIOs with PIN defines

+ Support in MUX setup (not used thou)
---
 machine.c      | 7 +++++--
 rtl837x_pins.c | 8 ++++++++
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/machine.c b/machine.c
index 8660bda..84f1d2c 100644
--- a/machine.c
+++ b/machine.c
@@ -21,7 +21,7 @@ __code const struct machine machine = {
 	.sfp_port[1].pin_tx_disable = GPIO_NA,
 	.sfp_port[1].sds = 0,
 	.sfp_port[1].i2c = { .sda = GPIO39_I2C_SDA4, .scl = GPIO40_I2C_SCL3_MDC1 },
-	.reset_pin = 46,
+	.reset_pin = GPIO46_I2C_SCL0,
 };
 #elif defined MACHINE_KP_9000_6XH_X
 __code const struct machine machine = {
@@ -38,6 +38,7 @@ __code const struct machine machine = {
 	.sfp_port[0].pin_tx_disable = GPIO_NA,
 	.sfp_port[0].sds = 1,
 	.sfp_port[0].i2c = { .sda = GPIO39_I2C_SDA4, .scl = GPIO40_I2C_SCL3_MDC1 },
+	.reset_pin = GPIO_NA,
 };
 #elif defined MACHINE_KP_9000_9XH_X_EU
 __code const struct machine machine = {
@@ -54,6 +55,7 @@ __code const struct machine machine = {
 	.sfp_port[0].pin_tx_disable = GPIO_NA,
 	.sfp_port[0].sds = 1,
 	.sfp_port[0].i2c = { .sda = GPIO39_I2C_SDA4, .scl = GPIO40_I2C_SCL3_MDC1 },
+	.reset_pin = GPIO_NA,
 };
 
 #elif defined MACHINE_SWGT024_V2_0
@@ -78,7 +80,7 @@ __code const struct machine machine = {
 	.sfp_port[1].pin_tx_disable = GPIO_NA,
 	.sfp_port[1].sds = 0,
 	.sfp_port[1].i2c = { .sda = GPIO41_I2C_SDA3_MDIO1, .scl = GPIO40_I2C_SCL3_MDC1 }, /* GPIO 40 */
-	.reset_pin = 36,
+	.reset_pin = GPIO36_PWM_OUT,
 };
 
 #elif defined DEFAULT_8C_1SFP
@@ -96,5 +98,6 @@ __code const struct machine machine = {
 	.sfp_port[0].pin_tx_disable = GPIO_NA,
 	.sfp_port[0].sds = 1,
 	.sfp_port[0].i2c = { .sda = GPIO39_I2C_SDA4, .scl = GPIO40_I2C_SCL3_MDC1 },
+	.reset_pin = GPIO_NA,
 };
 #endif
diff --git a/rtl837x_pins.c b/rtl837x_pins.c
index 83a9adb..a6cbe06 100644
--- a/rtl837x_pins.c
+++ b/rtl837x_pins.c
@@ -60,8 +60,16 @@ static void gpio_mux_setup(uint8_t pin)
 			reg_bit_set(RTL837X_PIN_MUX_1, 30);
 			break;
 		case GPIO37:
+		case GPIO38:
 			// Intentionally empty, always GPIO
 			break;
+		case GPIO46_I2C_SCL0:
+			// Bit 7-8 0b00 -> GPIO
+			reg_read_m(RTL837X_PIN_MUX_1);
+			sfr_mask_data(0, 0x80, 0x00);
+			sfr_mask_data(1, 0x01, 0x00);
+			reg_write_m(RTL837X_PIN_MUX_1);	
+			break;
 		case GPIO50_I2C_SCL2_UART1_TX:
 			// Bit 15-16 0b00 -> GPIO
 			reg_read_m(RTL837X_PIN_MUX_1);