From be630e69b1a7adac231ea710033caf4fe5d2b7b9 Mon Sep 17 00:00:00 2001 From: Douglas Anderson Date: Wed, 26 Aug 2015 13:35:48 -0700 Subject: [PATCH] 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 Signed-off-by: Yakir Yang (am from https://patchwork.kernel.org/patch/9223301/) --- drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index 372dc1ecb573..e64397496cf5 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c @@ -169,20 +169,8 @@ 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}, } };