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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>
This commit is contained in:
Lothar Waßmann 2016-07-11 14:18:48 +02:00 committed by Shawn Guo
parent d7b5ccc9fc
commit 7705b5ed8a
1 changed files with 0 additions and 77 deletions
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77
arch/arm/mach-mxs/mach-mxs.c
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@ -268,80 +268,6 @@ static void __init apx4devkit_init(void)
apx4devkit_phy_fixup); 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) static void __init crystalfontz_init(void)
{ {
update_fec_mac_prop(OUI_CRYSTALFONTZ); update_fec_mac_prop(OUI_CRYSTALFONTZ);
@ -501,9 +427,6 @@ static void __init mxs_machine_init(void)
of_platform_default_populate(NULL, NULL, parent); of_platform_default_populate(NULL, NULL, parent);
mxs_restart_init(); mxs_restart_init();
if (of_machine_is_compatible("karo,tx28"))
tx28_post_init();
} }
#define MXS_CLKCTRL_RESET_CHIP (1 << 1) #define MXS_CLKCTRL_RESET_CHIP (1 << 1)