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Contribution from Petri Laakso: 

Enable debug UART input
Fixes issue with some OLinuXino boards which were not able to
accept input from the user.
This commit is contained in:
jkunz 2013-02-07 21:56:36 +00:00
parent af9a2d00d7
commit f9de65ba47
1 changed files with 22 additions and 2 deletions
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24
sys/arch/evbarm/stand/bootimx23/pinctrl_prep.c
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@ -1,4 +1,4 @@
/* $Id: pinctrl_prep.c,v 1.2 2012/12/16 19:08:44 jkunz Exp $ */
/* $Id: pinctrl_prep.c,v 1.3 2013/02/07 21:56:36 jkunz Exp $ */
/*
* Copyright (c) 2012 The NetBSD Foundation, Inc.
@ -42,9 +42,10 @@
static void configure_emi_mux(void);
static void configure_emi_drive(int);
static void disable_emi_padkeepers(void);
static void configure_ssp_mux();
static void configure_ssp_mux(void);
static void configure_ssp_drive(int);
static void configure_ssp_pullups(void);
static void configure_dbuart_mux(void);
/* EMI pins output drive strengths */
#define DRIVE_04_MA 0x0 /* 4 mA */
@ -72,6 +73,9 @@ pinctrl_prep(void)
configure_ssp_drive(DRIVE_16_MA);
configure_ssp_pullups();
/* Debug UART. */
configure_dbuart_mux();
return 0;
}
@ -484,3 +488,19 @@ configure_ssp_pullups(void)
return;
}
/*
* Configure Debug UART MUX.
*/
static
void configure_dbuart_mux(void)
{
REG_WR(HW_PINCTRL_BASE + HW_PINCTRL_MUXSEL3_CLR,
__SHIFTIN(0x3, HW_PINCTRL_MUXSEL3_BANK1_PIN27) |
__SHIFTIN(0x3, HW_PINCTRL_MUXSEL3_BANK1_PIN26));
REG_WR(HW_PINCTRL_BASE + HW_PINCTRL_MUXSEL3_SET,
__SHIFTIN(0x2, HW_PINCTRL_MUXSEL3_BANK1_PIN27) |
__SHIFTIN(0x2, HW_PINCTRL_MUXSEL3_BANK1_PIN26));
return;
}