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Message-Id: <4eb5a5232acc6028648f94a1fdfd60b52b64149c.1260785451.git.baruch@tkos.co.il>
Date: Mon, 14 Dec 2009 12:19:42 +0200
From: Baruch Siach <baruch@...s.co.il>
To: Sascha Hauer <kernel@...gutronix.de>
Cc: linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org,
Baruch Siach <baruch@...s.co.il>
Subject: [PATCH 4/4] mx25: add support for FEC on i.MX25 PDK
Signed-off-by: Baruch Siach <baruch@...s.co.il>
---
arch/arm/mach-mx25/clock.c | 2 +
arch/arm/mach-mx25/devices.c | 19 +++++++++++++++
arch/arm/mach-mx25/devices.h | 1 +
arch/arm/mach-mx25/mx25pdk.c | 40 ++++++++++++++++++++++++++++++++-
arch/arm/plat-mxc/include/mach/mx25.h | 4 +++
5 files changed, 65 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-mx25/clock.c b/arch/arm/mach-mx25/clock.c
index dbbbcc6..ea8c3da 100644
--- a/arch/arm/mach-mx25/clock.c
+++ b/arch/arm/mach-mx25/clock.c
@@ -173,6 +173,7 @@ DEFINE_CLOCK(pwm4_clk, 0, CCM_CGCR2, 2, get_rate_ipg, NULL);
DEFINE_CLOCK(kpp_clk, 0, CCM_CGCR1, 28, get_rate_ipg, NULL);
DEFINE_CLOCK(tsc_clk, 0, CCM_CGCR2, 13, get_rate_ipg, NULL);
DEFINE_CLOCK(i2c_clk, 0, CCM_CGCR0, 6, get_rate_i2c, NULL);
+DEFINE_CLOCK(fec_clk, 0, CCM_CGCR0, 23, get_rate_ipg, NULL);
#define _REGISTER_CLOCK(d, n, c) \
{ \
@@ -204,6 +205,7 @@ static struct clk_lookup lookups[] = {
_REGISTER_CLOCK("imx-i2c.0", NULL, i2c_clk)
_REGISTER_CLOCK("imx-i2c.1", NULL, i2c_clk)
_REGISTER_CLOCK("imx-i2c.2", NULL, i2c_clk)
+ _REGISTER_CLOCK("fec.0", NULL, fec_clk)
};
int __init mx25_clocks_init(unsigned long fref)
diff --git a/arch/arm/mach-mx25/devices.c b/arch/arm/mach-mx25/devices.c
index 63511de..9fdeea1 100644
--- a/arch/arm/mach-mx25/devices.c
+++ b/arch/arm/mach-mx25/devices.c
@@ -419,3 +419,22 @@ int __init mxc_register_gpios(void)
return mxc_gpio_init(imx_gpio_ports, ARRAY_SIZE(imx_gpio_ports));
}
+static struct resource mx25_fec_resources[] = {
+ {
+ .start = MX25_FEC_BASE_ADDR,
+ .end = MX25_FEC_BASE_ADDR + 0xfff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = MX25_INT_FEC,
+ .end = MX25_INT_FEC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device mx25_fec_device = {
+ .name = "fec",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(mx25_fec_resources),
+ .resource = mx25_fec_resources,
+};
diff --git a/arch/arm/mach-mx25/devices.h b/arch/arm/mach-mx25/devices.h
index fe6bf88..fe5420f 100644
--- a/arch/arm/mach-mx25/devices.h
+++ b/arch/arm/mach-mx25/devices.h
@@ -17,3 +17,4 @@ extern struct platform_device mxc_keypad_device;
extern struct platform_device mxc_i2c_device0;
extern struct platform_device mxc_i2c_device1;
extern struct platform_device mxc_i2c_device2;
+extern struct platform_device mx25_fec_device;
diff --git a/arch/arm/mach-mx25/mx25pdk.c b/arch/arm/mach-mx25/mx25pdk.c
index d23ae57..011d6c3 100644
--- a/arch/arm/mach-mx25/mx25pdk.c
+++ b/arch/arm/mach-mx25/mx25pdk.c
@@ -18,6 +18,7 @@
#include <linux/types.h>
#include <linux/init.h>
+#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/irq.h>
#include <linux/gpio.h>
@@ -35,16 +36,53 @@
#include <mach/mx25.h>
#include <mach/mxc_nand.h>
#include "devices.h"
-#include <mach/iomux-v3.h>
+#include <mach/iomux.h>
static struct imxuart_platform_data uart_pdata = {
.flags = IMXUART_HAVE_RTSCTS,
};
+static struct pad_desc mx25pdk_pads[] = {
+ MX25_PAD_FEC_MDC__FEC_MDC,
+ MX25_PAD_FEC_MDIO__FEC_MDIO,
+ MX25_PAD_FEC_TDATA0__FEC_TDATA0,
+ MX25_PAD_FEC_TDATA1__FEC_TDATA1,
+ MX25_PAD_FEC_TX_EN__FEC_TX_EN,
+ MX25_PAD_FEC_RDATA0__FEC_RDATA0,
+ MX25_PAD_FEC_RDATA1__FEC_RDATA1,
+ MX25_PAD_FEC_RX_DV__FEC_RX_DV,
+ MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
+ MX25_PAD_A17__GPIO_2_3, /* FEC_EN, GPIO 35 */
+ MX25_PAD_D12__GPIO_4_8, /* FEC_RESET_B, GPIO 104 */
+};
+
+#define FEC_ENABLE_GPIO 35
+#define FEC_RESET_B_GPIO 104
+
+static void __init mx25pdk_fec_reset(void)
+{
+ gpio_request(FEC_ENABLE_GPIO, "FEC PHY enable");
+ gpio_request(FEC_RESET_B_GPIO, "FEC PHY reset");
+
+ gpio_direction_output(FEC_ENABLE_GPIO, 0); /* drop PHY power */
+ gpio_direction_output(FEC_RESET_B_GPIO, 0); /* assert reset */
+ udelay(2);
+
+ /* turn on PHY power and lift reset */
+ gpio_set_value(FEC_ENABLE_GPIO, 1);
+ gpio_set_value(FEC_RESET_B_GPIO, 1);
+}
+
static void __init mx25pdk_init(void)
{
+ mxc_iomux_v3_setup_multiple_pads(mx25pdk_pads,
+ ARRAY_SIZE(mx25pdk_pads));
+
mxc_register_device(&mxc_uart_device0, &uart_pdata);
mxc_register_device(&mxc_usbh2, NULL);
+
+ mx25pdk_fec_reset();
+ mxc_register_device(&mx25_fec_device, NULL);
}
static void __init mx25pdk_timer_init(void)
diff --git a/arch/arm/plat-mxc/include/mach/mx25.h b/arch/arm/plat-mxc/include/mach/mx25.h
index ec64bd9..106f651 100644
--- a/arch/arm/plat-mxc/include/mach/mx25.h
+++ b/arch/arm/plat-mxc/include/mach/mx25.h
@@ -41,4 +41,8 @@
#define UART1_BASE_ADDR 0x43f90000
#define UART2_BASE_ADDR 0x43f94000
+#define MX25_FEC_BASE_ADDR 0x50038000
+
+#define MX25_INT_FEC 57
+
#endif /* __MACH_MX25_H__ */
--
1.6.5
--
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