From: Vaibhav Hiremath <hvaibhav@xxxxxx>
With addition of HWMOD support to GPIO, the Ethernet controller
goes undetected for OMAP35xEVM. So explicitely assert the reset signal to
Ethernet controller smsc911x -
- GPIO7 (>=RevG version of EVM's)
- GPIO64 (<=RevD version of EVM's)
I have tested this patch on RevG version of EVM with ES3.1 Si.
This patch is based on intial version from Charulatha V.
Signed-off-by: Vaibhav Hiremath <hvaibhav@xxxxxx>
---
NOTE: I have not been able to test it on older version of EVM's.
arch/arm/mach-omap2/board-omap3evm.c | 27 ++++++++++++++++++++++++++-
1 files changed, 26 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 212d88c..336c012 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -124,10 +124,15 @@ static struct platform_device omap3evm_smsc911x_device = {
static inline void __init omap3evm_init_smsc911x(void)
{
- int eth_cs;
+ int eth_cs, eth_rst;
struct clk *l3ck;
unsigned int rate;
+ if (get_omap3_evm_rev() == OMAP3EVM_BOARD_GEN_1)
+ eth_rst = 64;
+ else
+ eth_rst = 7;
+
eth_cs = OMAP3EVM_SMSC911X_CS;
l3ck = clk_get(NULL, "l3_ck");
@@ -136,6 +141,22 @@ static inline void __init omap3evm_init_smsc911x(void)
else
rate = clk_get_rate(l3ck);
+ /* Configure ethernet controller reset gpio */
+ if (cpu_is_omap3430()) {
+ if (gpio_request(eth_rst, "SMSC911x gpio") < 0) {
+ pr_err(KERN_ERR "Failed to request GPIO7 for smsc911x\n");
+ return;
+ }
+
+ gpio_direction_output(eth_rst, 1);
+ /* reset pulse to ethernet controller*/
+ usleep_range(150, 220);
+ gpio_set_value(eth_rst, 0);
+ usleep_range(150, 220);
+ gpio_set_value(eth_rst, 1);
+ usleep_range(1, 2);
+ }
+
if (gpio_request(OMAP3EVM_ETHR_GPIO_IRQ, "SMSC911x irq") < 0) {
printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n",
OMAP3EVM_ETHR_GPIO_IRQ);
@@ -703,6 +724,10 @@ static struct omap_board_mux omap35x_board_mux[] __initdata = {
OMAP3_MUX(MCSPI1_CS1, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP |
OMAP_PIN_OFF_INPUT_PULLUP | OMAP_PIN_OFF_OUTPUT_LOW |
OMAP_PIN_OFF_WAKEUPENABLE),
+ OMAP3_MUX(SYS_BOOT5, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP |
+ OMAP_PIN_OFF_NONE),
+ OMAP3_MUX(GPMC_WAIT2, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP |
+ OMAP_PIN_OFF_NONE),
{ .reg_offset = OMAP_MUX_TERMINATOR },
};
--
1.6.2.4
--
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