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view src/cs/riviera/rvf/rvf_cust.h @ 629:3231dd9b38c1

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armio.c: make GPIOs 8 & 13 outputs driving 1 on all "classic" targets Calypso GPIOs 8 & 13 are pinmuxed with MCUEN1 & MCUEN2, respectively, and on powerup these pins are MCUEN, i.e., outputs driving 1. TI's code for C-Sample and earlier turns them into GPIOs configured as outputs also driving 1 - so far, so good - but TI's code for BOARD 41 (which covers D-Sample, Leonardo and all real world Calypso devices derived from the latter) switches them from MCUEN to GPIOs, but then leaves them as inputs. Given that the hardware powerup state of these two pins is outputs driving 1, every Calypso board design MUST be compatible with such driving; typically these GPIO signals will be either unused and unconnected or connected as outputs driving some peripheral. Turning these pins into GPIO inputs will result in floating inputs on every reasonably-wired board, thus I am convinced that this configuration is nothing but a bug on the part of whoever wrote this code at TI. This floating input bug had already been fixed earlier for GTA modem and FCDEV3B targets; the present change makes the fix unconditional for all "classic" targets. The newly affected targets are D-Sample, Leonardo, Tango and GTM900.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 02 Jan 2020 05:38:26 +0000
parents 945cf7f506b2
children
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/****************************************************************************/
/*                                                                          */
/*  Name        rvf_cust.h                                                  */
/*                                                                          */
/*  Function    this file contains rvf cust definitions                     */
/*                                                                          */
/*  Version		0.1															*/
/*																			*/
/* 	Date       	Modification												*/
/*  ------------------------------------									*/
/*  29/11/2002	Create														*/
/*																			*/
/*	Author		Stephanie Gerthoux(s-gerthoux@ti.com)						*/
/*																			*/
/* (C) Copyright 2002 by Texas Instruments Incorporated, All Rights Reserved*/
/****************************************************************************/


#ifndef _RVF_CUST_H
#define _RVF_CUST_H


#include "rv/general.h"


/* RVF will managed at most 2 pools of memory for dynamic allocation */
/* buffer pool structure*/
typedef struct _t_rvf_pool
{
	void * start_address;			/* address of the beginnig of the pool */
	UINT32 pool_size;				/* total size of the pool */
} T_RVF_POOL;


/* RVF function prototypes */

void _rvf_init_free_queue (UINT8 id, UINT32 size, void *p_mem);

#endif /* _RVF_I_H */