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Thu, 14 Dec 2023 01:50:32 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1785250414541254057 X-GMAIL-MSGID: 1785250414541254057 After GPIO reset, these Ethernet clock sequence needs to be configured before reading the features of PHY, the Ethernet system clock works on 25MHZ. Signed-off-by: Luo Jie --- drivers/net/phy/at803x.c | 84 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 83 insertions(+), 1 deletion(-) diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c index 6a7a7111ff68..204f5ca6001c 100644 --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -1090,6 +1090,84 @@ static int qca8084_parse_dt(struct phy_device *phydev) return 0; } +static int qca8084_clock_config(struct phy_device *phydev) +{ + struct at803x_priv *priv; + int ret = 0; + + /* The ethernet clock IDs are only defined in one PHY device + * tree node, and these ethernet clocks only needs to be configured + * one time, which work on the clock rate 25MHZ. + */ + priv = phydev->priv; + if (!priv->clk[SRDS0_SYS_CLK]) + return 0; + + ret = clk_set_rate(priv->clk[SRDS0_SYS_CLK], 25000000); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk[SRDS0_SYS_CLK]); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk[SRDS1_SYS_CLK]); + if (ret) + return ret; + + /* Reset PCS system clocks */ + reset_control_assert(priv->reset[SRDS0_SYS_RESET]); + reset_control_assert(priv->reset[SRDS1_SYS_RESET]); + fsleep(20000); + + reset_control_deassert(priv->reset[SRDS0_SYS_RESET]); + reset_control_deassert(priv->reset[SRDS1_SYS_RESET]); + + ret = clk_prepare_enable(priv->clk[GEPHY0_SYS_CLK]); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk[GEPHY1_SYS_CLK]); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk[GEPHY2_SYS_CLK]); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk[GEPHY3_SYS_CLK]); + if (ret) + return ret; + + /* Reset ethernet system clocks */ + reset_control_assert(priv->reset[GEPHY0_SYS_RESET]); + reset_control_assert(priv->reset[GEPHY1_SYS_RESET]); + reset_control_assert(priv->reset[GEPHY2_SYS_RESET]); + reset_control_assert(priv->reset[GEPHY3_SYS_RESET]); + fsleep(20000); + + reset_control_deassert(priv->reset[GEPHY0_SYS_RESET]); + reset_control_deassert(priv->reset[GEPHY1_SYS_RESET]); + reset_control_deassert(priv->reset[GEPHY2_SYS_RESET]); + reset_control_deassert(priv->reset[GEPHY3_SYS_RESET]); + + /* Release ethernet DSP reset */ + reset_control_deassert(priv->reset[GEPHY0_RESET]); + reset_control_deassert(priv->reset[GEPHY1_RESET]); + reset_control_deassert(priv->reset[GEPHY2_RESET]); + reset_control_deassert(priv->reset[GEPHY3_RESET]); + reset_control_deassert(priv->reset[GEPHY_DSP_RESET]); + + /* Enable efuse loading into analog circuit */ + ret = qca8084_mii_modify(phydev, QCA8084_EPHY_CFG, + QCA8084_EPHY_LDO_EN, 0); + if (ret) + return ret; + + fsleep(10000); + return 0; +} + static int qca8084_probe(struct phy_device *phydev) { int ret; @@ -1098,7 +1176,11 @@ static int qca8084_probe(struct phy_device *phydev) if (ret) return ret; - return qca8084_parse_and_set_phyaddr(phydev); + ret = qca8084_parse_and_set_phyaddr(phydev); + if (ret) + return ret; + + return qca8084_clock_config(phydev); } static int at803x_probe(struct phy_device *phydev)