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https://github.com/LibreELEC/LibreELEC.tv
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52 lines
2.0 KiB
Diff
52 lines
2.0 KiB
Diff
From 9c31071f0029afa91b2b377886797e4d6c199c17 Mon Sep 17 00:00:00 2001
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From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
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Date: Thu, 5 Jun 2025 22:33:29 +0300
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Subject: [PATCH 081/110] FROMLIST(v1): phy: rockchip: samsung-hdptx: Prevent
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Inter-Pair Skew from exceeding the limits
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Fixup PHY deskew FIFO to prevent the phase of D2 lane going ahead of
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other lanes. It's worth noting this might only happen when dealing with
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HDMI 2.0 rates.
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Fixes: 553be2830c5f ("phy: rockchip: Add Samsung HDMI/eDP Combo PHY driver")
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Co-developed-by: Algea Cao <algea.cao@rock-chips.com>
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Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
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Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
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---
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drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c | 9 +++++----
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1 file changed, 5 insertions(+), 4 deletions(-)
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diff --git a/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c b/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c
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index 9751f7ad00f4..5605610465bc 100644
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--- a/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c
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+++ b/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c
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@@ -668,13 +668,9 @@ static const struct reg_sequence rk_hdtpx_common_lane_init_seq[] = {
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static const struct reg_sequence rk_hdtpx_tmds_lane_init_seq[] = {
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REG_SEQ0(LANE_REG(0312), 0x00),
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- REG_SEQ0(LANE_REG(031e), 0x00),
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REG_SEQ0(LANE_REG(0412), 0x00),
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- REG_SEQ0(LANE_REG(041e), 0x00),
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REG_SEQ0(LANE_REG(0512), 0x00),
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- REG_SEQ0(LANE_REG(051e), 0x00),
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REG_SEQ0(LANE_REG(0612), 0x00),
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- REG_SEQ0(LANE_REG(061e), 0x08),
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REG_SEQ0(LANE_REG(0303), 0x2f),
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REG_SEQ0(LANE_REG(0403), 0x2f),
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REG_SEQ0(LANE_REG(0503), 0x2f),
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@@ -687,6 +683,11 @@ static const struct reg_sequence rk_hdtpx_tmds_lane_init_seq[] = {
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REG_SEQ0(LANE_REG(0406), 0x1c),
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REG_SEQ0(LANE_REG(0506), 0x1c),
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REG_SEQ0(LANE_REG(0606), 0x1c),
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+ /* Keep Inter-Pair Skew in the limits */
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+ REG_SEQ0(LANE_REG(031e), 0x02),
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+ REG_SEQ0(LANE_REG(041e), 0x02),
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+ REG_SEQ0(LANE_REG(051e), 0x02),
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+ REG_SEQ0(LANE_REG(061e), 0x0a),
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};
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static struct tx_drv_ctrl tx_drv_ctrl_rbr[4][4] = {
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--
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2.34.1
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