diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/drivers/ti/sn65dsi86bridge/sn65dsi86bridge.c | 32 |
1 files changed, 2 insertions, 30 deletions
diff --git a/src/drivers/ti/sn65dsi86bridge/sn65dsi86bridge.c b/src/drivers/ti/sn65dsi86bridge/sn65dsi86bridge.c index effa841690..5a6eb496ea 100644 --- a/src/drivers/ti/sn65dsi86bridge/sn65dsi86bridge.c +++ b/src/drivers/ti/sn65dsi86bridge/sn65dsi86bridge.c @@ -431,35 +431,6 @@ static void sn65dsi86_bridge_link_training(uint8_t bus, uint8_t chip) printk(BIOS_ERR, "ERROR: Link training failed 10 times\n"); } -static enum cb_err sn65dsi86_bridge_get_plug_in_status(uint8_t bus, uint8_t chip) -{ - int val; - uint8_t buf; - - val = i2c_readb(bus, chip, SN_HPD_DISABLE_REG, &buf); - if (val == 0 && (buf & HPD_DISABLE)) - return CB_SUCCESS; - - return CB_ERR; -} - -/* - * support bridge HPD function some hardware versions do not support bridge hdp, - * we use 360ms to try to get the hpd single now, if we can not get bridge hpd single, - * it will delay 360ms, also meet the bridge power timing request, to be compatible - * all of the hardware versions - */ -static void sn65dsi86_bridge_wait_hpd(uint8_t bus, uint8_t chip) -{ - if (wait_ms(400, sn65dsi86_bridge_get_plug_in_status(bus, chip))) - return; - - printk(BIOS_WARNING, "HPD detection failed, force hpd\n"); - - /* Force HPD */ - i2c_write_field(bus, chip, SN_HPD_DISABLE_REG, HPD_DISABLE, 1, 0); -} - static void sn65dsi86_bridge_assr_config(uint8_t bus, uint8_t chip, int enable) { if (enable) @@ -481,7 +452,8 @@ static int sn65dsi86_bridge_dp_lane_config(uint8_t bus, uint8_t chip) void sn65dsi86_bridge_init(uint8_t bus, uint8_t chip, enum dp_pll_clk_src ref_clk) { - sn65dsi86_bridge_wait_hpd(bus, chip); + /* disable HPD */ + i2c_write_field(bus, chip, SN_HPD_DISABLE_REG, HPD_DISABLE, 1, 0); /* set refclk to 19.2 MHZ */ i2c_write_field(bus, chip, SN_DPPLL_SRC_REG, ref_clk, 7, 1); |