Thread (3 messages) flat view 3 messages, 3 authors, 2011-01-06
DORMANTno replies

[PATCH] ARM i.MX53: enable fec driver on EVK board

From: Yong Shen <hidden>
Date: 2011-01-06 09:45:11

Hi Baruch,

Thanks for comments.
quoted
+static inline void fec_reset(void)
For the sake of clearer stack traces I prefer a less generic name for this
routine, something like mx53_evk_fec_reset().
Acked.
quoted
+{
+ ? ? int ret;
+
+ ? ? /* reset FEC PHY */
+ ? ? ret = gpio_request(SMD_FEC_PHY_RST, "fec-phy-reset");
+ ? ? if (ret) {
+ ? ? ? ? ? ? printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
+ ? ? ? ? ? ? return;
+ ? ? }
+ ? ? gpio_direction_output(SMD_FEC_PHY_RST, 0);
+ ? ? gpio_set_value(SMD_FEC_PHY_RST, 0);
This seems to be redundant. gpio_direction_output() has already set the value
to 0.
You are right. But, gpio_set_value is meant to be here to show the
process of fec reset: first pull low and then pull high. And
gpio_direction_output here is for direction configuration although it
has the ability of configure output value.

cheers
Yong
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