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net/wan/fsl_ucc_hdlc: call qe_setbrg only for loopback mode
We can't assume that we are always in loopback mode if rx and tx clock have the same clock source. If we want to use HDLC busmode we also have the same clock source but we are not in loopback mode. So move the setting of the baudrate generator after the check for property for the loopback mode. Signed-off-by: Holger Brunck <holger.brunck@keymile.com> Cc: Zhao Qiang <qiang.zhao@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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5b8aad93c5
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54e9e08749
1 changed files with 3 additions and 4 deletions
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@ -113,6 +113,9 @@ static int uhdlc_init(struct ucc_hdlc_private *priv)
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/* Loopback mode */
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if (priv->loopback) {
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dev_info(priv->dev, "Loopback Mode\n");
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/* use the same clock when work in loopback */
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qe_setbrg(ut_info->uf_info.rx_clock, 20000000, 1);
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gumr = ioread32be(&priv->uf_regs->gumr);
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gumr |= (UCC_FAST_GUMR_LOOPBACK | UCC_FAST_GUMR_CDS |
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UCC_FAST_GUMR_TCI);
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@ -1021,10 +1024,6 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
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return -EINVAL;
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}
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/* use the same clock when work in loopback */
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if (ut_info->uf_info.rx_clock == ut_info->uf_info.tx_clock)
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qe_setbrg(ut_info->uf_info.rx_clock, 20000000, 1);
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ret = of_address_to_resource(np, 0, &res);
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if (ret)
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return -EINVAL;
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