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phy: rockchip: naneng-combphy: Fix Rx squelch for RK3528 U3

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This patch adjust the RK3528 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 RK3528 platforms.

Change-Id: Ifa4eac24bbdebe020db356ba45dae146f4df22f1
Signed-off-by: William Wu <william.wu@rock-chips.com>
This commit is contained in:
William Wu
2023-06-05 10:10:01 +08:00
committed by Tao Huang
parent 695a9c9e4d
commit ee81350d02
1 changed files with 6 additions and 0 deletions
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6
drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
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@ -468,6 +468,12 @@ static int rk3528_combphy_cfg(struct rockchip_combphy_priv *priv)
val |= 0x01 << 17;
writel(val, priv->mmio + 0x200);
/* Set Rx squelch input filler bandwidth */
val = readl(priv->mmio + 0x20c);
val &= ~GENMASK(2, 0);
val |= 0x06;
writel(val, priv->mmio + 0x20c);
param_write(priv->phy_grf, &cfg->pipe_txcomp_sel, false);
param_write(priv->phy_grf, &cfg->pipe_txelec_sel, false);
param_write(priv->phy_grf, &cfg->usb_mode_set, true);