[PATCH] ARM: mxs: remove obsolete startup code for TX28

From: Lothar WaÃmann
Date: Mon Jul 11 2016 - 08:21:31 EST


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 WaÃmann <LW@xxxxxxxxxxxxxxxxxxx>
---
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 0b7fe74..e4f2108 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)
--
2.1.4