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Identify pin configuration registers

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logicog
2025-08-22 09:04:34 +02:00
parent 0a05fe923e
commit 81b7e4fa87
2 changed files with 21 additions and 12 deletions
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rtl837x_regs.h
+8
View File
@@ -39,6 +39,14 @@
5: 2.5Gbit
*/
/*
* Pin configuration (pinmux)
*/
#define RTL837X_PIN_MUX_A 0x7f8c
#define RTL837X_PIN_MUX_B 0x7f90
#define RTL837X_REG_GPIO_A 0x40
// BIT 4 resets RTL8224 on 9000-9XH
rtlplayground.c
+13 -12
View File
@@ -1054,13 +1054,14 @@ void setup_clock(void)
// Divider in bits 4 & 5
sfr_mask_data(0, 0, CLOCK_DIV << 4);
#endif
// This is set in managed mode 125MHz
// Bit 8 is set in managed mode 125MHz to use fast SPI mode
sfr_mask_data(1, 0, 0x01);
reg_write_m(RTL837X_REG_HW_CONF);
reg_read_m(0x7f90);
// Enable serial interface, set bit 0
reg_read_m(RTL837X_PIN_MUX_B);
sfr_mask_data(0, 0x1, 0x1);
reg_write_m(0x7f90);
reg_write_m(RTL837X_PIN_MUX_B);
}
@@ -1231,7 +1232,7 @@ void led_config_9xh(void)
reg_bit_clear(0x65dc, 0x1b);
// r7f8c:30000000 R7f8c-30000000 r7f8c:30000000 R7f8c-38000000
reg_bit_set(0x7f8c, 0x1b);
reg_bit_set(RTL837X_PIN_MUX_A, 0x1b);
// R6548-0041017f
REG_SET(0x6548, 0x0041017f);
@@ -1283,13 +1284,13 @@ void led_config(void)
// Set bits 1b/1d of 0x7f8c: r7f8c:30000000 R7f8c-30000000 r7f8c:30000000 R7f8c-38000000
if (nSFPPorts == 2) {
reg_bit_set(0x7f8c, 0x1b); // R7f8c-28000000
reg_bit_clear(0x7f8c, 0x1c); // R7f8c-28000000
reg_bit_set(0x7f8c, 0x1d); // R7f8c-28000000
reg_bit_set(RTL837X_PIN_MUX_A, 0x1b); // R7f8c-28000000
reg_bit_clear(RTL837X_PIN_MUX_A, 0x1c); // R7f8c-28000000
reg_bit_set(RTL837X_PIN_MUX_A, 0x1d); // R7f8c-28000000
} else {
reg_bit_set(0x7f8c, 0x1d);
reg_bit_set(0x7f8c, 0x1c);
reg_bit_set(0x7f8c, 0x1b);
reg_bit_set(RTL837X_PIN_MUX_A, 0x1d);
reg_bit_set(RTL837X_PIN_MUX_A, 0x1c);
reg_bit_set(RTL837X_PIN_MUX_A, 0x1b);
}
// LED setup
// r6520:0021fdb0 R6520-0021e7b0 r6520:0021e7b0 R6520-0021e6b0 r65f8:00000018 R65f8-00000018 R65fc-fffff000 r6600:00000000 R6600-0000000f r65dc:5fffff00 R65dc-7fffff00 r65dc:7fffff00 R65dc-77ffff00
@@ -1571,10 +1572,10 @@ void setup_i2c(void)
REG_SET(0x041c, 0);
// HW Control register, enable I2C?
reg_read_m(0x7f90);
reg_read_m(RTL837X_PIN_MUX_B);
sfr_mask_data(3, 0x20, 0x00); // Clear bit 29
sfr_mask_data(0, 0x60, 0x40); // Set bits 5-6 to 0b10
reg_write_m(0x7f90);
reg_write_m(RTL837X_PIN_MUX_B);
}