mirror of
https://github.com/torvalds/linux.git
synced 2024-11-15 08:31:55 +00:00
a329b48c43
Add basic clock support, cpu identification, I/O mapping, interrupt controller, serial port and ethernet. Signed-off-by: Amit Kucheria <amit.kucheria@canonical.com>
110 lines
3.3 KiB
C
110 lines
3.3 KiB
C
/*
|
|
* Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
|
|
* <armlinux@phytec.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
* MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __MACH_IOMUX_V3_H__
|
|
#define __MACH_IOMUX_V3_H__
|
|
|
|
/*
|
|
* build IOMUX_PAD structure
|
|
*
|
|
* This iomux scheme is based around pads, which are the physical balls
|
|
* on the processor.
|
|
*
|
|
* - Each pad has a pad control register (IOMUXC_SW_PAD_CTRL_x) which controls
|
|
* things like driving strength and pullup/pulldown.
|
|
* - Each pad can have but not necessarily does have an output routing register
|
|
* (IOMUXC_SW_MUX_CTL_PAD_x).
|
|
* - Each pad can have but not necessarily does have an input routing register
|
|
* (IOMUXC_x_SELECT_INPUT)
|
|
*
|
|
* The three register sets do not have a fixed offset to each other,
|
|
* hence we order this table by pad control registers (which all pads
|
|
* have) and put the optional i/o routing registers into additional
|
|
* fields.
|
|
*
|
|
* The naming convention for the pad modes is MX35_PAD_<padname>__<padmode>
|
|
* If <padname> or <padmode> refers to a GPIO, it is named
|
|
* GPIO_<unit>_<num>
|
|
*
|
|
*/
|
|
|
|
struct pad_desc {
|
|
unsigned mux_ctrl_ofs:12; /* IOMUXC_SW_MUX_CTL_PAD offset */
|
|
unsigned mux_mode:8;
|
|
unsigned pad_ctrl_ofs:12; /* IOMUXC_SW_PAD_CTRL offset */
|
|
#define NO_PAD_CTRL (1 << 16)
|
|
unsigned pad_ctrl:17;
|
|
unsigned select_input_ofs:12; /* IOMUXC_SELECT_INPUT offset */
|
|
unsigned select_input:3;
|
|
};
|
|
|
|
#define IOMUX_PAD(_pad_ctrl_ofs, _mux_ctrl_ofs, _mux_mode, _select_input_ofs, \
|
|
_select_input, _pad_ctrl) \
|
|
{ \
|
|
.mux_ctrl_ofs = _mux_ctrl_ofs, \
|
|
.mux_mode = _mux_mode, \
|
|
.pad_ctrl_ofs = _pad_ctrl_ofs, \
|
|
.pad_ctrl = _pad_ctrl, \
|
|
.select_input_ofs = _select_input_ofs, \
|
|
.select_input = _select_input, \
|
|
}
|
|
|
|
/*
|
|
* Use to set PAD control
|
|
*/
|
|
|
|
#define PAD_CTL_DVS (1 << 13)
|
|
#define PAD_CTL_HYS (1 << 8)
|
|
|
|
#define PAD_CTL_PKE (1 << 7)
|
|
#define PAD_CTL_PUE (1 << 6)
|
|
#define PAD_CTL_PUS_100K_DOWN (0 << 4)
|
|
#define PAD_CTL_PUS_47K_UP (1 << 4)
|
|
#define PAD_CTL_PUS_100K_UP (2 << 4)
|
|
#define PAD_CTL_PUS_22K_UP (3 << 4)
|
|
|
|
#define PAD_CTL_ODE (1 << 3)
|
|
|
|
#define PAD_CTL_DSE_LOW (0 << 1)
|
|
#define PAD_CTL_DSE_MED (1 << 1)
|
|
#define PAD_CTL_DSE_HIGH (2 << 1)
|
|
#define PAD_CTL_DSE_MAX (3 << 1)
|
|
|
|
#define PAD_CTL_SRE_FAST (1 << 0)
|
|
#define PAD_CTL_SRE_SLOW (0 << 0)
|
|
|
|
/*
|
|
* setups a single pad in the iomuxer
|
|
*/
|
|
int mxc_iomux_v3_setup_pad(struct pad_desc *pad);
|
|
|
|
/*
|
|
* setups mutliple pads
|
|
* convenient way to call the above function with tables
|
|
*/
|
|
int mxc_iomux_v3_setup_multiple_pads(struct pad_desc *pad_list, unsigned count);
|
|
|
|
/*
|
|
* Initialise the iomux controller
|
|
*/
|
|
void mxc_iomux_v3_init(void __iomem *iomux_v3_base);
|
|
|
|
#endif /* __MACH_IOMUX_V3_H__*/
|
|
|