Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Added wait for PHY ready before attempting to initialise #59

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Added wait for PHY ready before attempting to initialise #59

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
23 changes: 19 additions & 4 deletions module_ethernet_smi/src/smi.xc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -183,7 +183,12 @@ int eth_phy_id(smi_interface_t &smi) {
}

void eth_phy_config(int eth100, smi_interface_t &smi) {
int autoNegAdvertReg, basicControl;
int autoNegAdvertReg, basicControl = 0x0800;

// Wait for power down bit to be cleared before attempting reg/read writes
while(basicControl & 0x0800)
basicControl = smi_reg(smi, BASIC_CONTROL_REG, 0, SMI_READ);

autoNegAdvertReg = smi_reg(smi, AUTONEG_ADVERT_REG, 0, SMI_READ);

// Clear bits [9:5]
Expand All @@ -199,7 +204,6 @@ void eth_phy_config(int eth100, smi_interface_t &smi) {
// Write back
smi_reg(smi, AUTONEG_ADVERT_REG, autoNegAdvertReg, SMI_WRITE);

basicControl = smi_reg(smi, BASIC_CONTROL_REG, 0, SMI_READ);
// clear autoneg bit
// basicControl &= ~(1 << BASIC_CONTROL_AUTONEG_EN_BIT);
// smi_reg(smi, BASIC_CONTROL_REG, basicControl, SMI_WRITE);
Expand All @@ -212,7 +216,12 @@ void eth_phy_config(int eth100, smi_interface_t &smi) {
}

void eth_phy_config_noauto(int eth100, smi_interface_t &smi) {
int basicControl = smi_reg(smi, BASIC_CONTROL_REG, 0, SMI_READ);
int basicControl = 0x0800;

// Wait for power down bit to be cleared before attempting reg/read writes
while(basicControl & 0x0800)
basicControl = smi_reg(smi, BASIC_CONTROL_REG, 0, SMI_READ);

// set duplex mode, clear autoneg and 100 Mbps.
basicControl |= 1 << BASIC_CONTROL_FULL_DUPLEX_BIT;
basicControl &= ~( (1 << BASIC_CONTROL_AUTONEG_EN_BIT)|
Expand All @@ -225,7 +234,12 @@ void eth_phy_config_noauto(int eth100, smi_interface_t &smi) {


void eth_phy_loopback(int enable, smi_interface_t &smi) {
int controlReg = smi_reg(smi, BASIC_CONTROL_REG, 0, SMI_READ);
int controlReg = 0x0800;

// Wait for power down bit to be cleared before attempting reg/read writes
while(controlReg & 0x0800)
controlReg = smi_reg(smi, BASIC_CONTROL_REG, 0, SMI_READ);

// First clear both autoneg and loopback
controlReg = controlReg & ~ ((1 << BASIC_CONTROL_AUTONEG_EN_BIT) |
(1 << BASIC_CONTROL_LOOPBACK_BIT));
Expand All @@ -241,3 +255,4 @@ void eth_phy_loopback(int enable, smi_interface_t &smi) {
int smi_check_link_state(smi_interface_t &smi) {
return (smi_reg(smi, BASIC_STATUS_REG, 0, SMI_READ) >> BASIC_STATUS_LINK_BIT) & 1;
}