From: Uma Shankar <[email protected]> MIPI Video Mode for high res panels (requiring dual link), need a 8X/3 divider to be programmed as 0x2. Modifying the same in this patch.
Signed-off-by: Uma Shankar <[email protected]> --- drivers/gpu/drm/i915/intel_dsi_pll.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c b/drivers/gpu/drm/i915/intel_dsi_pll.c index 61440e5..8b4fcc2 100644 --- a/drivers/gpu/drm/i915/intel_dsi_pll.c +++ b/drivers/gpu/drm/i915/intel_dsi_pll.c @@ -416,11 +416,13 @@ static void bxt_dsi_program_clocks(struct drm_device *dev, enum port port, rx_div_lower = rx_div & RX_DIVIDER_BIT_1_2; rx_div_upper = (rx_div & RX_DIVIDER_BIT_3_4) >> 2; - /* As per bpsec program the 8/3X clock divider to the below value */ - if (dev_priv->vbt.dsi.config->is_cmd_mode) - mipi_8by3_divider = 0x2; - else - mipi_8by3_divider = 0x3; + /* + * As per bpsec program the 8/3X clock divider to the below value + * The Value of 0x2 only, works for dual link Video Mode. 0x3 mentioned + * in bspec causes garbage screen and corrupted display. Programming it + * as 0x2 for both video and command mode. + */ + mipi_8by3_divider = 0x2; tmp |= BXT_MIPI_8X_BY3_DIVIDER(port, mipi_8by3_divider); tmp |= BXT_MIPI_TX_ESCLK_DIVIDER(port, tx_div); -- 1.9.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
