From: Douglas Anderson <dianders@chromium.org>
Date: Sun, 8 Sep 2024 14:55:01 +0000 (+0000)
Subject: drm/rockchip: dw_hdmi: Set cur_ctr to 0 always
X-Git-Tag: v6.13-rc1~122^2~23^2~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7d324630f3515bd6e11cadeb1d748bd74ecc9664;p=thirdparty%2Fkernel%2Flinux.git

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.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240908145511.3331451-5-jonas@kwiboo.se
---

diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index dffbae005a962..a050a65af8f29 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -179,23 +179,9 @@ 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},
+		~0UL,      { 0x0000, 0x0000, 0x0000 },
 	}
 };