On Monday, October 20, 2014 at 08:45:48 AM, Stefan Roese wrote:
Hi all,
This patch adds I2C support for the SoCFPGA. Using the designware I2C controller driver. It supports all 4 I2C busses on the SoCFPGA.
Signed-off-by: Stefan Roese sr@denx.de Cc: Marek Vasut marex@denx.de Cc: Vince Briders vbridger@altera.com Cc: Chin Liang See clsee@altera.com Cc: Dinh Nguyen dinguyen@altera.com
+CC Heiko, the I2C custodian.
include/configs/socfpga_common.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/include/configs/socfpga_common.h b/include/configs/socfpga_common.h index 49504dc..ba1e072 100644 --- a/include/configs/socfpga_common.h +++ b/include/configs/socfpga_common.h @@ -157,6 +157,28 @@ #define CONFIG_BAUDRATE 115200
/*
- I2C support
- */
+#define CONFIG_HARD_I2C +#define CONFIG_DW_I2C +#define CONFIG_I2C_MULTI_BUS
I presume this should be converted to CONFIG_SYS_I2C framework instead of using this I2C multibus horror, no?
+#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 +/* address of device when used as slave */ +#define CONFIG_SYS_I2C_SLAVE 0x02 +#ifndef __ASSEMBLY__ +/* clock supplied to I2C controller in unit of MHz */ +unsigned int cm_get_l4_sp_clk_hz(void);
Include clock_manager.h instead maybe ?
+#define IC_CLK (cm_get_l4_sp_clk_hz() / 1000000) +#endif +#define CONFIG_CMD_I2C
+/*
- U-Boot environment
*/ #define CONFIG_SYS_CONSOLE_IS_IN_ENV
Best regards, Marek Vasut