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arm: mxs: olinuxino: Enable USB only when needed

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Enable the power to the USB port only when the USB port is really needed.
Do not enable the power unconditionally.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Marek Vasut 2014-04-28 03:38:42 +02:00 committed by Stefano Babic
parent 7c604e98c2
commit ca11db2603
1 changed files with 17 additions and 5 deletions
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22
board/olimex/mx23_olinuxino/mx23_olinuxino.c
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@ -30,14 +30,26 @@ int board_early_init_f(void)
/* SSP0 clock at 96MHz */ /* SSP0 clock at 96MHz */
mxs_set_sspclk(MXC_SSPCLK0, 96000, 0); mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
#ifdef CONFIG_CMD_USB
/* Enable LAN9512 */
gpio_direction_output(MX23_PAD_GPMI_ALE__GPIO_0_17, 1);
#endif
return 0; return 0;
} }
#ifdef CONFIG_CMD_USB
int board_ehci_hcd_init(int port)
{
/* Enable LAN9512 (Maxi) or GL850G (Mini) USB HUB power. */
gpio_direction_output(MX23_PAD_GPMI_ALE__GPIO_0_17, 1);
udelay(100);
return 0;
}
int board_ehci_hcd_exit(int port)
{
/* Enable LAN9512 (Maxi) or GL850G (Mini) USB HUB power. */
gpio_direction_output(MX23_PAD_GPMI_ALE__GPIO_0_17, 0);
return 0;
}
#endif
int dram_init(void) int dram_init(void)
{ {
return mxs_dram_init(); return mxs_dram_init();