Dear TI,
Please help us with DSI tuner values for dual lvds mode settings with frame rate of 60Hz.
Because when we are setting it to 60fps display works fine at first time but after reboot
display is not at all working, need your help in finding out proper values to input in DSI tuner tool.
We are using display of Module 15.6”FHD Color TFT-LCD, Model Name "G156HTN02.0" .
Please find snapshots of values used on DSI tuner tool.
LCD SPEC
timing5: timing5 {
screen-type = <SCREEN_MIPI>;
lvds-format = <LVDS_8BIT_1>;
out-face = <OUT_P888>;
clock-frequency = <141860000>;
hactive = <1920>;
vactive = <1080>;
hback-porch = <30>;
hfront-porch = <60>;
vback-porch = <10>;
vfront-porch = <15>;
hsync-len = <15>;
vsync-len = <5>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <0>;
pixelclk-active = <0>;
swap-rb = <0>;
swap-rg = <0>;
swap-gb = <0>;
swap-delta = <0>;
swap-dummy = <0>;
};
void DSI84_MIPI_to_DUAL_LVDS_G156HTN020()
{
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_SOFT_RESET , 0x00);// reg 0x09
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CORE_PLL , 0x05);// reg 0x0a
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_PLL_DIV , 0x28);// reg 0x0b
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_PLL_EN , 0x00);// reg 0x0d
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_DSI_CFG , 0x26);// reg 0x10
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_DSI_EQ , 0x00);// reg 0x11
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_DSI_CLK_RNG , 0x55);// reg 0x12
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_LVDS_MODE , 0x6c);// reg 0x18
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_LVDS_SIGN , 0x00);// reg 0x19
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_LVDS_TERM , 0x03);// reg 0x1a
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_LVDS_CM , 0x00);// reg 0x1b
//W=1920
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_LINE_LEN_LO , 0x80);// reg 0x20
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_LINE_LEN_HI , 0x07);// reg 0x21
//H=1080
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_VERT_LINES_LO , 0x38);// reg 0x24
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_VERT_LINES_HI , 0x04);// reg 0x25
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_SYNC_DELAY_LO , 0x20);// reg 0x28
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_SYNC_DELAY_HI , 0x00);// reg 0x29
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_HSYNC_WIDTH_LO , 15);// reg 0x2c
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_HSYNC_WIDTH_HI , 0);// reg 0x2d
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_HORZ_BACKPORCH , 30);// reg 0x34
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_HORZ_FRONTPORCH , 60);// reg 0x38
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_VSYNC_WIDTH_LO , 5);// reg 0x30
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_VSYNC_WIDTH_HI , 0);// reg 0x31
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_VERT_BACKPORCH , 10);// reg 0x36
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_VERT_FRONTPORCH , 15);// reg 0x3a
i2c_reg_write(SN65DSI84_I2C_ADDR, DSI84_CHA_TEST_PATTERN , 0x00);// reg 0x3c
}
rockchip,dsi_hs_clk = <851.16>;
use debug board . and use command " dumpsys display | grep DisplayModeRecord "
can see fps : DisplayModeRecord{mMode={id=1, width=1920, height=1080, fps=63.000004}}
