ARM: mxs: remove obsolete startup code for TX28

The power and reset handling of the FEC ethernet driver is sufficient
to get the ethernet PHY on the TX28 into a usable state.
Remove the code that does the PHY initialization on startup.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c
index 0b7fe74..e4f2108 100644 (file)
--- a/arch/arm/mach-mxs/mach-mxs.c
+++ b/arch/arm/mach-mxs/mach-mxs.c
@@ -268,80 +268,6 @@ static void __init apx4devkit_init(void)
                                           apx4devkit_phy_fixup);
 }
 
-#define ENET0_MDC__GPIO_4_0    MXS_GPIO_NR(4, 0)
-#define ENET0_MDIO__GPIO_4_1   MXS_GPIO_NR(4, 1)
-#define ENET0_RX_EN__GPIO_4_2  MXS_GPIO_NR(4, 2)
-#define ENET0_RXD0__GPIO_4_3   MXS_GPIO_NR(4, 3)
-#define ENET0_RXD1__GPIO_4_4   MXS_GPIO_NR(4, 4)
-#define ENET0_TX_EN__GPIO_4_6  MXS_GPIO_NR(4, 6)
-#define ENET0_TXD0__GPIO_4_7   MXS_GPIO_NR(4, 7)
-#define ENET0_TXD1__GPIO_4_8   MXS_GPIO_NR(4, 8)
-#define ENET_CLK__GPIO_4_16    MXS_GPIO_NR(4, 16)
-
-#define TX28_FEC_PHY_POWER     MXS_GPIO_NR(3, 29)
-#define TX28_FEC_PHY_RESET     MXS_GPIO_NR(4, 13)
-#define TX28_FEC_nINT          MXS_GPIO_NR(4, 5)
-
-static const struct gpio const tx28_gpios[] __initconst = {
-       { ENET0_MDC__GPIO_4_0, GPIOF_OUT_INIT_LOW, "GPIO_4_0" },
-       { ENET0_MDIO__GPIO_4_1, GPIOF_OUT_INIT_LOW, "GPIO_4_1" },
-       { ENET0_RX_EN__GPIO_4_2, GPIOF_OUT_INIT_LOW, "GPIO_4_2" },
-       { ENET0_RXD0__GPIO_4_3, GPIOF_OUT_INIT_LOW, "GPIO_4_3" },
-       { ENET0_RXD1__GPIO_4_4, GPIOF_OUT_INIT_LOW, "GPIO_4_4" },
-       { ENET0_TX_EN__GPIO_4_6, GPIOF_OUT_INIT_LOW, "GPIO_4_6" },
-       { ENET0_TXD0__GPIO_4_7, GPIOF_OUT_INIT_LOW, "GPIO_4_7" },
-       { ENET0_TXD1__GPIO_4_8, GPIOF_OUT_INIT_LOW, "GPIO_4_8" },
-       { ENET_CLK__GPIO_4_16, GPIOF_OUT_INIT_LOW, "GPIO_4_16" },
-       { TX28_FEC_PHY_POWER, GPIOF_OUT_INIT_LOW, "fec-phy-power" },
-       { TX28_FEC_PHY_RESET, GPIOF_OUT_INIT_LOW, "fec-phy-reset" },
-       { TX28_FEC_nINT, GPIOF_DIR_IN, "fec-int" },
-};
-
-static void __init tx28_post_init(void)
-{
-       struct device_node *np;
-       struct platform_device *pdev;
-       struct pinctrl *pctl;
-       int ret;
-
-       enable_clk_enet_out();
-
-       np = of_find_compatible_node(NULL, NULL, "fsl,imx28-fec");
-       pdev = of_find_device_by_node(np);
-       if (!pdev) {
-               pr_err("%s: failed to find fec device\n", __func__);
-               return;
-       }
-
-       pctl = pinctrl_get_select(&pdev->dev, "gpio_mode");
-       if (IS_ERR(pctl)) {
-               pr_err("%s: failed to get pinctrl state\n", __func__);
-               return;
-       }
-
-       ret = gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios));
-       if (ret) {
-               pr_err("%s: failed to request gpios: %d\n", __func__, ret);
-               return;
-       }
-
-       /* Power up fec phy */
-       gpio_set_value(TX28_FEC_PHY_POWER, 1);
-       msleep(26); /* 25ms according to data sheet */
-
-       /* Mode strap pins */
-       gpio_set_value(ENET0_RX_EN__GPIO_4_2, 1);
-       gpio_set_value(ENET0_RXD0__GPIO_4_3, 1);
-       gpio_set_value(ENET0_RXD1__GPIO_4_4, 1);
-
-       udelay(100); /* minimum assertion time for nRST */
-
-       /* Deasserting FEC PHY RESET */
-       gpio_set_value(TX28_FEC_PHY_RESET, 1);
-
-       pinctrl_put(pctl);
-}
-
 static void __init crystalfontz_init(void)
 {
        update_fec_mac_prop(OUI_CRYSTALFONTZ);
@@ -501,9 +427,6 @@ static void __init mxs_machine_init(void)
        of_platform_default_populate(NULL, NULL, parent);
 
        mxs_restart_init();
-
-       if (of_machine_is_compatible("karo,tx28"))
-               tx28_post_init();
 }
 
 #define MXS_CLKCTRL_RESET_CHIP         (1 << 1)