Re: [PATCH] drm/i915: Use DSI Pll1 for enabling MIPI DSI on Port C

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On 12/8/2014 5:03 PM, Jani Nikula wrote:
On Sun, 07 Dec 2014, Gaurav K Singh <gaurav.k.singh@xxxxxxxxx> wrote:
DSI Pll1 is used for enabling DSI on Port C.

Signed-off-by: Gaurav K Singh <gaurav.k.singh@xxxxxxxxx>
---
  drivers/gpu/drm/i915/intel_dsi_pll.c |    7 +++++--
  1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c b/drivers/gpu/drm/i915/intel_dsi_pll.c
index 8957f10..9b7f6a5 100644
--- a/drivers/gpu/drm/i915/intel_dsi_pll.c
+++ b/drivers/gpu/drm/i915/intel_dsi_pll.c
@@ -241,9 +241,12 @@ static void vlv_configure_dsi_pll(struct intel_encoder *encoder)
  		return;
  	}
- dsi_mnp.dsi_pll_ctrl |= DSI_PLL_CLK_GATE_DSI0_DSIPLL;
+	if ((intel_dsi->ports == ((1 << PORT_A) | (1 << PORT_C))) ||
+	    (intel_dsi->ports == (1 << PORT_A)))
+		dsi_mnp.dsi_pll_ctrl |= DSI_PLL_CLK_GATE_DSI0_DSIPLL;
- if (intel_dsi->dual_link)
+	if ((intel_dsi->ports == ((1 << PORT_A) | (1 << PORT_C))) ||
+	    (intel_dsi->ports == (1 << PORT_C)))
  		dsi_mnp.dsi_pll_ctrl |= DSI_PLL_CLK_GATE_DSI1_DSIPLL;
In other words, patches 1 and 2 can be squashed into one that has:

	if (intel_dsi->ports & (1 << PORT_A))
		dsi_mnp.dsi_pll_ctrl |= DSI_PLL_CLK_GATE_DSI0_DSIPLL;

	if (intel_dsi->ports & (1 << PORT_C))
		dsi_mnp.dsi_pll_ctrl |= DSI_PLL_CLK_GATE_DSI1_DSIPLL;

Right?

BR,
Jani.
Jani,

Yes, uploaded the new patch addressing your comments.

With regards,
Gaurav

DRM_DEBUG_KMS("dsi pll div %08x, ctrl %08x\n",
--
1.7.9.5

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