diff options
Diffstat (limited to 'board/gdsys/common/dp501.c')
| -rw-r--r-- | board/gdsys/common/dp501.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/board/gdsys/common/dp501.c b/board/gdsys/common/dp501.c index 52f3ea167f..7eb15ed0ba 100644 --- a/board/gdsys/common/dp501.c +++ b/board/gdsys/common/dp501.c @@ -54,14 +54,39 @@ static void dp501_link_training(u8 addr) void dp501_powerup(u8 addr) { dp501_clrbits(addr, 0x0a, 0x30); /* power on encoder */ + dp501_setbits(addr, 0x0a, 0x0e); /* block HDCP and MCCS on I2C bride*/ i2c_reg_write(addr, 0x27, 0x30); /* Hardware auto detect DVO timing */ dp501_setbits(addr, 0x72, 0x80); /* DPCD read enable */ dp501_setbits(addr, 0x30, 0x20); /* RS polynomial select */ i2c_reg_write(addr, 0x71, 0x20); /* Enable Aux burst write */ dp501_setbits(addr, 0x78, 0x30); /* Disable HPD2 IRQ */ dp501_clrbits(addr, 0x2f, 0x40); /* Link FIFO reset selection */ + dp501_clrbits(addr, 0x60, 0x20); /* Enable scrambling */ + +#ifdef CONFIG_SYS_DP501_VCAPCTRL0 + i2c_reg_write(addr, 0x24, CONFIG_SYS_DP501_VCAPCTRL0); +#else i2c_reg_write(addr, 0x24, 0xc0); /* SDR mode 0, ext. H/VSYNC */ +#endif + +#ifdef CONFIG_SYS_DP501_DIFFERENTIAL + i2c_reg_write(addr + 2, 0x24, 0x10); /* clock input differential */ + i2c_reg_write(addr + 2, 0x25, 0x04); + i2c_reg_write(addr + 2, 0x26, 0x10); +#else i2c_reg_write(addr + 2, 0x24, 0x02); /* clock input single ended */ +#endif + + i2c_reg_write(addr + 2, 0x00, 0x18); /* driving strength */ + i2c_reg_write(addr + 2, 0x03, 0x06); /* driving strength */ + i2c_reg_write(addr, 0x2c, 0x00); /* configure N value */ + i2c_reg_write(addr, 0x2d, 0x00); /* configure N value */ + i2c_reg_write(addr, 0x2e, 0x0c); /* configure N value */ + i2c_reg_write(addr, 0x76, 0xff); /* clear all interrupt */ + dp501_setbits(addr, 0x78, 0x03); /* clear all interrupt */ + i2c_reg_write(addr, 0x75, 0xf8); /* aux channel reset */ + i2c_reg_write(addr, 0x75, 0x00); /* clear aux channel reset */ + i2c_reg_write(addr, 0x87, 0x70); /* set retry counter as 7 */ if (dp501_detect_cable_adapter(addr)) { printf("DVI/HDMI cable adapter detected\n"); @@ -69,16 +94,6 @@ void dp501_powerup(u8 addr) dp501_clrbits(addr, 0x00, 0x08); /* DVI/HDMI HDCP operation */ } else { printf("no DVI/HDMI cable adapter detected\n"); - i2c_reg_write(addr + 2, 0x00, 0x18); /* driving strength */ - i2c_reg_write(addr + 2, 0x03, 0x06); /* driving strength */ - i2c_reg_write(addr, 0x2c, 0x00); /* configure N value */ - i2c_reg_write(addr, 0x2d, 0x00); /* configure N value */ - i2c_reg_write(addr, 0x2e, 0x0c); /* configure N value */ - i2c_reg_write(addr, 0x76, 0xff); /* clear all interrupt */ - dp501_setbits(addr, 0x78, 0x03); /* clear all interrupt */ - i2c_reg_write(addr, 0x75, 0xf8); /* aux channel reset */ - i2c_reg_write(addr, 0x75, 0x00); /* clear aux channel reset */ - i2c_reg_write(addr, 0x87, 0x70); /* set retry counter as 7 */ dp501_setbits(addr, 0x00, 0x08); /* for DP HDCP operation */ dp501_link_training(addr); |
