From 7705b5ed8adccd921423019e870df672fa423279 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Lothar=20Wa=C3=9Fmann?= Date: Mon, 11 Jul 2016 14:18:48 +0200 Subject: [PATCH] ARM: mxs: remove obsolete startup code for TX28 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/mach-mxs/mach-mxs.c | 77 ------------------------------------ 1 file changed, 77 deletions(-) diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c index 0b7fe74ff46d..e4f21086b42b 100644 --- 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) -- 2.34.1