diff options
Diffstat (limited to 'src/southbridge/via/k8t890/k8t890_ctrl.c')
| -rw-r--r-- | src/southbridge/via/k8t890/k8t890_ctrl.c | 56 |
1 files changed, 51 insertions, 5 deletions
diff --git a/src/southbridge/via/k8t890/k8t890_ctrl.c b/src/southbridge/via/k8t890/k8t890_ctrl.c index c8ca2122d0..c57c165195 100644 --- a/src/southbridge/via/k8t890/k8t890_ctrl.c +++ b/src/southbridge/via/k8t890/k8t890_ctrl.c @@ -23,6 +23,56 @@ #include <device/pci_ids.h> #include <console/console.h> +/** + * Setup the V-Link for VT8237R, 8X mode. + * + * For K8T890CF VIA recommends what is in VIA column, AW is award 8X: + * + * REG DEF AW VIA-8X VIA-4X + * ----------------------------- + * NB V-Link Manual Driving Control strobe 0xb5 0x46 0x46 0x88 0x88 + * NB V-Link Manual Driving Control - Data 0xb6 0x46 0x46 0x88 0x88 + * NB V-Link Receiving Strobe Delay 0xb7 0x02 0x02 0x61 0x01 + * NB V-Link Compensation Control bit4,0 (b5,b6) 0xb4 0x10 0x10 0x11 0x11 + * SB V-Link Strobe Drive Control 0xb9 0x00 0xa5 0x98 0x98 + * SB V-Link Data drive Control???? 0xba 0x00 0xbb 0x77 0x77 + * SB V-Link Receive Strobe Delay???? 0xbb 0x04 0x11 0x11 0x11 + * SB V-Link Compensation Control bit0 (use b9) 0xb8 0x00 0x01 0x01 0x01 + * V-Link CKG Control 0xb0 0x05 0x05 0x06 0x03 + * V-Link CKG Control 0xb1 0x05 0x05 0x01 0x03 + */ +static void ctrl_init(struct device *dev) +{ + u8 reg; + device_t devsb = dev_find_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_VT8237R_LPC, 0); + + if (!devsb) + return; + + pci_write_config8(dev, 0xb5, 0x88); + pci_write_config8(dev, 0xb6, 0x88); + pci_write_config8(dev, 0xb7, 0x61); + + reg = pci_read_config8(dev, 0xb4); + reg |= 0x11; + pci_write_config8(dev, 0xb4, reg); + + pci_write_config8(dev, 0xb9, 0x98); + pci_write_config8(dev, 0xba, 0x77); + pci_write_config8(dev, 0xbb, 0x11); + + reg = pci_read_config8(dev, 0xb8); + reg |= 0x1; + pci_write_config8(dev, 0xb8, reg); + + pci_write_config8(dev, 0xb0, 0x06); + pci_write_config8(dev, 0xb1, 0x01); + + /* Program V-link 8X 16bit full duplex, parity enabled. */ + pci_write_config8(dev, 0x48, 0xa3); +} + static void ctrl_enable(struct device *dev) { u8 regm, regm2, regm3; @@ -36,11 +86,6 @@ static void ctrl_enable(struct device *dev) /* PCI CFG Address bits[27:24] are used as extended register address bit[11:8] */ pci_write_config8(dev, 0x47, 0x30); - - /* FIXME: Program V-link 8X 16bit full duplex, this needs to be fixed - for other than VT8237R SB */ - pci_write_config8(dev, 0x48, 0x23); - /* Magic init. This is not well documented :/ */ pci_write_config8(dev, 0x70, 0xc2); @@ -92,6 +137,7 @@ static struct device_operations ctrl_ops = { .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .enable = ctrl_enable, + .init = ctrl_init, .ops_pci = 0, }; |