Depending on the correct refclk, n ,p for CHT, calculate
the dsi clk during readout DSI HW state.
Signed-off-by: Gaurav K Singh <gaurav.k.si...@intel.com>
---
drivers/gpu/drm/i915/intel_dsi_pll.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c
b/drivers/gpu/drm/i915/intel_dsi_pll.c
index 5e44c9b..c7d55e8 100644
--- a/drivers/gpu/drm/i915/intel_dsi_pll.c
+++ b/drivers/gpu/drm/i915/intel_dsi_pll.c
@@ -357,9 +357,17 @@ u32 vlv_get_dsi_pclk(struct intel_encoder *encoder, int
pipe_bpp)
u32 m = 0, p = 0;
int refclk = 25000;
int i;
+ u32 n = 1;
+ u32 m_start = 62;
DRM_DEBUG_KMS("\n");
+ if (IS_CHERRYVIEW(dev_priv->dev)) {
+ refclk = 100000;
+ n = 4;
+ m_start = 70;
+ }
+
mutex_lock(&dev_priv->dpio_lock);
pll_ctl = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
pll_div = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_DIVIDER);
@@ -394,9 +402,9 @@ u32 vlv_get_dsi_pclk(struct intel_encoder *encoder, int
pipe_bpp)
return 0;
}
- m = i + 62;
+ m = i + m_start;
- dsi_clock = (m * refclk) / p;
+ dsi_clock = (m * refclk) / (p * n);
/* pixel_format and pipe_bpp should agree */
assert_bpp_mismatch(intel_dsi->pixel_format, pipe_bpp);
--
1.7.9.5
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