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arm: socfpga: Add I2C support to SoCFPGA

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This patch adds I2C support for the SoCFPGA. Using the designware I2C
controller driver. It supports all 4 I2C busses on the SoCFPGA.

The designware I2C driver has now been converted to the
CONFIG_SYS_I2C framework. So lets enable it on SoCFPGA.

Tested on SoCrates.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Cc: Vince Bridgers <vbridger@altera.com>
Cc: Pavel Machek <pavel@denx.de>
Cc: Heiko Schocher <hs@denx.de>
This commit is contained in:
Stefan Roese 2014-10-30 09:33:13 +01:00 committed by Marek Vasut
parent 571bdf16a7
commit ebcaf966ed
1 changed files with 27 additions and 0 deletions
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27
include/configs/socfpga_common.h
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@ -141,6 +141,33 @@
#define CONFIG_SYS_MMC_MAX_BLK_COUNT 256 /* FIXME -- SPL only? */
#endif
/*
* I2C support
*/
#define CONFIG_SYS_I2C
#define CONFIG_SYS_I2C_DW
#define CONFIG_SYS_I2C_BUS_MAX 4
#define CONFIG_SYS_I2C_BASE SOCFPGA_I2C0_ADDRESS
#define CONFIG_SYS_I2C_BASE1 SOCFPGA_I2C1_ADDRESS
#define CONFIG_SYS_I2C_BASE2 SOCFPGA_I2C2_ADDRESS
#define CONFIG_SYS_I2C_BASE3 SOCFPGA_I2C3_ADDRESS
/* Using standard mode which the speed up to 100Kb/s */
#define CONFIG_SYS_I2C_SPEED 100000
#define CONFIG_SYS_I2C_SPEED1 100000
#define CONFIG_SYS_I2C_SPEED2 100000
#define CONFIG_SYS_I2C_SPEED3 100000
/* Address of device when used as slave */
#define CONFIG_SYS_I2C_SLAVE 0x02
#define CONFIG_SYS_I2C_SLAVE1 0x02
#define CONFIG_SYS_I2C_SLAVE2 0x02
#define CONFIG_SYS_I2C_SLAVE3 0x02
#ifndef __ASSEMBLY__
/* Clock supplied to I2C controller in unit of MHz */
unsigned int cm_get_l4_sp_clk_hz(void);
#define IC_CLK (cm_get_l4_sp_clk_hz() / 1000000)
#endif
#define CONFIG_CMD_I2C
/*
* Serial Driver
*/