diff options
Diffstat (limited to 'src/drivers/genesyslogic/gl9755/gl9755.c')
| -rw-r--r-- | src/drivers/genesyslogic/gl9755/gl9755.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/src/drivers/genesyslogic/gl9755/gl9755.c b/src/drivers/genesyslogic/gl9755/gl9755.c index c3cdef11e7..6dfac47293 100644 --- a/src/drivers/genesyslogic/gl9755/gl9755.c +++ b/src/drivers/genesyslogic/gl9755/gl9755.c @@ -10,15 +10,24 @@ #include <device/pci_ids.h> #include "gl9755.h" -static void gl9755_init(struct device *dev) +static void gl9755_enable(struct device *dev) { - printk(BIOS_INFO, "GL9755: init\n"); - pci_dev_init(dev); + uint32_t reg; + + printk(BIOS_INFO, "GL9755: configure ASPM and LTR\n"); /* Set Vendor Config to be configurable */ pci_or_config32(dev, CFG, CFG_EN); + /* Set LTR value */ pci_write_config32(dev, LTR, NO_SNOOP_SCALE|NO_SNOOP_VALUE|SNOOP_SCALE|SNOOP_VALUE); + + /* Adjust L1 exit latency to enable ASPM */ + reg = pci_read_config32(dev, CFG2); + reg &= ~CFG2_LAT_L1_MASK; + reg |= CFG2_LAT_L1_64US; + pci_write_config32(dev, CFG2, reg); + /* Set Vendor Config to be non-configurable */ pci_and_config32(dev, CFG, ~CFG_EN); } @@ -28,7 +37,7 @@ static struct device_operations gl9755_ops = { .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .ops_pci = &pci_dev_ops_pci, - .init = gl9755_init, + .enable = gl9755_enable }; static const unsigned short pci_device_ids[] = { |