Handle RTL8261BE SerDes configuration

The RTL8261BE uses a 10GBit QSGMII connection. Add handler for initial
configuration of the SerDes speed and upon link changes.
This commit is contained in:
logicog
2026-04-24 10:52:24 +02:00
parent c8e21b394b
commit 4f4f69ecc1
2 changed files with 64 additions and 31 deletions
+33 -5
View File
@@ -867,13 +867,14 @@ void early_boot_handle_button(void)
* to connect to an SFP module or a PHY
* Valid modes are SDS_10GR, SDS_QXGMII, SDS_HISGMII, SDS_HSG, SDS_SGMII and SDS_1000BX_FIBER
* The SerDes ID may be 0 or 1 for RTL8272 and 0-2 for RTL8373
* SDS_QXGMII is used for 10G Fiber, RTL8224 and RTL8261BE
*/
void sds_config(uint8_t sds, uint8_t mode)
{
print_string("sds_config sds: "); print_byte(sds); print_string(", mode: "); print_byte(mode); write_char('\n');
sds_config_mac(sds, mode);
if (mode == SDS_10GR || mode == SDS_QXGMII) // 10G Fiber, 10G connection to RTL8224
if (mode == SDS_10GR || mode == SDS_QXGMII)
sds_write_v(sds, 0x21, 0x10, 0x4480); // Q002110:6480
else
sds_write_v(sds, 0x21, 0x10, 0x6480); // Q002110:6480
@@ -909,7 +910,7 @@ void sds_config(uint8_t sds, uint8_t mode)
}
sds_write_v(sds, 0x36, 0x10, v); // Q003610:0200
if (page == 0x2e) { // 10G Fiber
if (page == 0x2e) { // 10G Fiber / SDS_QXGMII
sds_write_v(sds, page, 0x04, 0x0080); // Q012e04:0080
sds_write_v(sds, page, 0x06, 0x0408); // Q012e06:0408
sds_write_v(sds, page, 0x07, 0x020d); // Q012e07:020d
@@ -938,6 +939,30 @@ void sds_config(uint8_t sds, uint8_t mode)
sds_write_v(sds, 0x07, 0x0c, 0x9401); // Q00070c:9401
sds_write_v(sds, 0x1f, 0x0b, 0x0003); // Q001f0b:0003
sds_write_v(sds, 0x06, 0x03, 0xc45c); // Q000603:c45c
// RTL8261BE
if (machine.n_10g && mode == SDS_QXGMII) {
sds_write_v(sds, 0x06, 0x1f, 0x2100); // Q00061f:2100
sds_write_v(sds, 0x07, 0x11, 0x054f); // Q000711:054f
sds_write_v(sds, 0x20, 0x00, 0x0030); // Q002000:0030
sds_write_v(sds, 0x20, 0x00, 0x0010); // Q002000:0010
sds_write_v(sds, 0x20, 0x00, 0x0050); // Q002000:0050
sds_write_v(sds, 0x20, 0x00, 0x00d0); // Q002000:00d0
sds_write_v(sds, 0x20, 0x00, 0x0cd0); // Q002000:0cd0
sds_write_v(sds, 0x20, 0x00, 0x04d0); // Q002000:04d0
sds_write_v(sds, 0x20, 0x00, 0x04d0); // Q002000:04d0
sds_write_v(sds, 0x20, 0x00, 0x0cd0); // Q002000:0cd0
sds_write_v(sds, 0x20, 0x00, 0x00d0); // Q002000:00d0
sds_write_v(sds, 0x20, 0x00, 0x00d0); // Q002000:00d0
sds_write_v(sds, 0x20, 0x00, 0x0050); // Q002000:0050
sds_write_v(sds, 0x20, 0x00, 0x0010); // Q002000:0010
sds_write_v(sds, 0x20, 0x00, 0x0010); // Q002000:0010
sds_write_v(sds, 0x20, 0x00, 0x0030); // Q002000:0030
sds_write_v(sds, 0x20, 0x00, 0x0000); // Q002000:0000
sds_write_v(sds, 0x1f, 0x00, 0x000b); // Q001f00:000b
sds_write_v(sds, 0x1f, 0x00, 0x0000); // Q001f00:0000
return;
}
if (mode != SDS_QXGMII)
sds_write_v(sds, 0x06, 0x1f, 0x2100); // Q00061f:2100
@@ -1342,13 +1367,17 @@ void idle(void)
uint8_t p5 = sfr_data[2] >> 4;
uint8_t p5_last = linkbits_last[2] >> 4;
cpy_4(linkbits_last, sfr_data);
// Handle link change of the RTL8221 PHY, adjust SDS mode
if (p5_last != p5) {
// Handle link change of the RTL8221 PHY, adjust SDS mode, RTL8261BE always uses SDS_QXGMII
if (!machine.n_10g && p5_last != p5) {
if (p5 == 0x5) // 2.5GBit Mode
sds_config(0, SDS_HISGMII);
else if (p5 == 0x2) // 1GBit
sds_config(0, SDS_SGMII);
}
if (machine.n_10g)
sds_config(0, SDS_QXGMII);
if (machine.n_10g == 2)
sds_config(1, SDS_QXGMII);
} else {
cpy_4(linkbits_last, sfr_data);
}
@@ -2016,7 +2045,6 @@ void main(void)
setup_i2c();
setup_sfp_gpio();
print_string(greeting);
print_string("\nClock register: ");