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 <s...@denx.de> Cc: Marek Vasut <ma...@denx.de> Cc: Chin Liang See <cl...@altera.com> Cc: Dinh Nguyen <dingu...@altera.com> Cc: Vince Bridgers <vbrid...@altera.com> Cc: Pavel Machek <pa...@denx.de> Cc: Heiko Schocher <h...@denx.de> --- v2: - The designware I2C driver now has been converted to the CONFIG_SYS_I2C framework. Use the correct defines to enable it. include/configs/socfpga_common.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/include/configs/socfpga_common.h b/include/configs/socfpga_common.h index 83a1bcd..f7b314d 100644 --- a/include/configs/socfpga_common.h +++ b/include/configs/socfpga_common.h @@ -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 */ -- 2.1.3 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
