FROMLIST: drm/rockchip: dw_hdmi: Set cur_ctr to 0 always

Jitter was improved by lowering the MPLL bandwidth to account for high
frequency noise in the rk3288 PLL.  In each case MPLL bandwidth was
lowered only enough to get us a comfortable margin.  We believe that
lowering the bandwidth like this is safe given sufficient testing.

Change-Id: Ife266747f0e6ed46f914f4868362fefc481440f9
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>
(am from https://patchwork.kernel.org/patch/9223301/)

diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index 801110f65a63896004aea13587b39edec4ceaab4..a621118316d8fbb475e8a5d154df555bc9ce4cb0 100644 (file)
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -115,20 +115,8 @@ static const struct dw_hdmi_mpll_config rockchip_mpll_cfg[] = {
 static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = {
        /*      pixelclk    bpp8    bpp10   bpp12 */
        {
-               40000000,  { 0x0018, 0x0018, 0x0018 },
-       }, {
-               65000000,  { 0x0028, 0x0028, 0x0028 },
-       }, {
-               66000000,  { 0x0038, 0x0038, 0x0038 },
-       }, {
-               74250000,  { 0x0028, 0x0038, 0x0038 },
-       }, {
-               83500000,  { 0x0028, 0x0038, 0x0038 },
-       }, {
-               146250000, { 0x0038, 0x0038, 0x0038 },
-       }, {
-               148500000, { 0x0000, 0x0038, 0x0038 },
-       }, {
+               600000000, { 0x0000, 0x0000, 0x0000 },
+       },  {
                ~0UL,      { 0x0000, 0x0000, 0x0000},
        }
 };