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phy: rockchip: naneng-combphy: Fix Rx squelch for RK3568 U3

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This patch adjust the RK3568 U3 Rx squelch input filler
bandwidth to 3'b110 which is used for rx_lfps, reduce the
bandwidth to avoid filtering valid superspeed data.

With this patch, it can fix the issue that Kingston U3 Disk
(idVendor=0951, idProduct=1666, bcdDevice= 1.10) read error
on RK3568 platforms.

Change-Id: I27410c5702862df2d8829a2ca3c2c1d9f57885be
Signed-off-by: William Wu <william.wu@rock-chips.com>
This commit is contained in:
William Wu
2023-06-05 09:50:28 +08:00
committed by Tao Huang
parent 60c9e5240f
commit 4bbb16bf87
1 changed files with 3 additions and 0 deletions
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3
drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
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@@ -827,6 +827,9 @@ static int rk3568_combphy_cfg(struct rockchip_combphy_priv *priv)
/* Set PLL KVCO to min and set PLL charge pump current to max */
writel(0xf0, priv->mmio + (0xa << 2));
/* Set Rx squelch input filler bandwidth */
writel(0x0e, priv->mmio + (0x14 << 2));
param_write(priv->phy_grf, &cfg->pipe_sel_usb, true);
param_write(priv->phy_grf, &cfg->pipe_txcomp_sel, false);
param_write(priv->phy_grf, &cfg->pipe_txelec_sel, false);