MLK-24295 net: phy: realtek: add dt property to enable clkout
Add dt property for user to enable clkout for MAC. Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com> Signed-off-by: Fugang Duan <fugang.duan@nxp.com>5.4-rM2-2.2.x-imx-squashed
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@ -0,0 +1,7 @@
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Realtek PHY properties.
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These properties cover the base properties Realtek PHYs.
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Optional properties:
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- rtl821x,clkout_en : enable clkout to supply clocks for MAC.
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@ -9,6 +9,7 @@
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* Copyright (c) 2004 Freescale Semiconductor, Inc.
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*/
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#include <linux/bitops.h>
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#include <linux/of.h>
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#include <linux/phy.h>
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#include <linux/module.h>
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@ -50,10 +51,20 @@
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#define RTL_GENERIC_PHYID 0x001cc800
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/* page 0xa43, register 0x19 */
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#define RTL8211F_PHYCR2 0x19
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#define RTL8211F_CLKOUT_EN BIT(0)
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#define RTL821X_CLKOUT_EN_FEATURE (1 << 0)
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MODULE_DESCRIPTION("Realtek PHY driver");
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MODULE_AUTHOR("Johnson Leung");
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MODULE_LICENSE("GPL");
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struct rtl821x_priv {
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u32 quirks;
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};
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static int rtl821x_read_page(struct phy_device *phydev)
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{
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return __phy_read(phydev, RTL821x_PAGE_SELECT);
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@ -64,6 +75,23 @@ static int rtl821x_write_page(struct phy_device *phydev, int page)
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return __phy_write(phydev, RTL821x_PAGE_SELECT, page);
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}
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static int rtl821x_probe(struct phy_device *phydev)
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{
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struct device *dev = &phydev->mdio.dev;
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struct rtl821x_priv *priv;
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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if (of_property_read_bool(dev->of_node, "rtl821x,clkout_en"))
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priv->quirks |= RTL821X_CLKOUT_EN_FEATURE;
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phydev->priv = priv;
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return 0;
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}
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static int rtl8201_ack_interrupt(struct phy_device *phydev)
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{
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int err;
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@ -175,6 +203,7 @@ static int rtl8211f_config_init(struct phy_device *phydev)
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u16 txdly = 0;
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u16 rxdly = 0;
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int ret;
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struct rtl821x_priv *priv = phydev->priv;
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/* enable TX-delay for rgmii-{id,txid}, and disable it for rgmii and
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* rgmii-rxid. The RX-delay can be enabled by the external RXDLY pin.
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@ -206,6 +235,22 @@ static int rtl8211f_config_init(struct phy_device *phydev)
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return ret;
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}
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if (priv->quirks & RTL821X_CLKOUT_EN_FEATURE) {
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ret = phy_modify_paged(phydev, 0xa43, RTL8211F_PHYCR2,
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RTL8211F_CLKOUT_EN, RTL8211F_CLKOUT_EN);
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if (ret < 0) {
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dev_err(&phydev->mdio.dev, "clkout enable failed\n");
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return ret;
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}
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} else {
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ret = phy_modify_paged(phydev, 0xa43, RTL8211F_PHYCR2,
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RTL8211F_CLKOUT_EN, 0);
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if (ret < 0) {
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dev_err(&phydev->mdio.dev, "clkout disable failed\n");
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return ret;
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}
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}
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return ret;
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}
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@ -505,6 +550,7 @@ static struct phy_driver realtek_drvs[] = {
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}, {
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PHY_ID_MATCH_EXACT(0x001cc916),
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.name = "RTL8211F Gigabit Ethernet",
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.probe = rtl821x_probe,
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.config_init = &rtl8211f_config_init,
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.ack_interrupt = &rtl8211f_ack_interrupt,
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.config_intr = &rtl8211f_config_intr,
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