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author | Sascha Hauer <s.hauer@pengutronix.de> | 2009-11-19 14:03:52 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-12-03 10:44:28 +0100 |
commit | 28948a4b4522667cb61ef2ce2f6299c091cd0416 (patch) | |
tree | 8d2fda49d154be88631266b5d9be9039b314fd86 | |
parent | 39cc3a5609aff5d1e18ea12ec1beee128d75cca5 (diff) | |
download | barebox-28948a4b4522667cb61ef2ce2f6299c091cd0416.tar.gz barebox-28948a4b4522667cb61ef2ce2f6299c091cd0416.tar.xz |
at91sam9260ek: Reset ethernet phy during init
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r-- | board/at91sam9260ek/init.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/board/at91sam9260ek/init.c b/board/at91sam9260ek/init.c index bf40bc4895..d3325f2ae2 100644 --- a/board/at91sam9260ek/init.c +++ b/board/at91sam9260ek/init.c @@ -37,6 +37,9 @@ #include <mach/at91sam9_smc.h> #include <mach/sam9_smc.h> #include <gpio.h> +#include <mach/io.h> +#include <mach/at91_pmc.h> +#include <mach/at91_rstc.h> static struct atmel_nand_data nand_pdata = { .ale = 21, @@ -90,9 +93,40 @@ static struct at91_ether_platform_data macb_pdata = { .phy_addr = 0, }; +static void at91sam9260ek_phy_reset(void) +{ + unsigned long rstc; + at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_EMAC); + + at91_set_gpio_input(AT91_PIN_PA14, 0); + at91_set_gpio_input(AT91_PIN_PA15, 0); + at91_set_gpio_input(AT91_PIN_PA17, 0); + at91_set_gpio_input(AT91_PIN_PA25, 0); + at91_set_gpio_input(AT91_PIN_PA26, 0); + at91_set_gpio_input(AT91_PIN_PA28, 0); + + rstc = at91_sys_read(AT91_RSTC_MR) & AT91_RSTC_ERSTL; + + /* Need to reset PHY -> 500ms reset */ + at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY | + (AT91_RSTC_ERSTL & (0x0d << 8)) | + AT91_RSTC_URSTEN); + + at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST); + + /* Wait for end hardware reset */ + while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL)); + + /* Restore NRST value */ + at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY | + (rstc) | + AT91_RSTC_URSTEN); +} + static int at91sam9260ek_devices_init(void) { ek_add_device_nand(); + at91sam9260ek_phy_reset(); at91_add_device_eth(&macb_pdata); at91_add_device_sdram(64 * 1024 * 1024); |