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| author | Heiko Schocher <hs@denx.de> | 2013-01-29 08:53:15 +0100 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2013-07-23 05:54:29 +0200 |
| commit | ea818dbbcd59300b56014ac2d67798a54994eb9b (patch) | |
| tree | fbdedc80f785873f96e79893a1a813504af57580 /include/configs/RPXlite.h | |
| parent | 3f4978c713255c8406875fbdf23ffed1129bc44b (diff) | |
| download | u-boot-imx-ea818dbbcd59300b56014ac2d67798a54994eb9b.zip u-boot-imx-ea818dbbcd59300b56014ac2d67798a54994eb9b.tar.gz u-boot-imx-ea818dbbcd59300b56014ac2d67798a54994eb9b.tar.bz2 | |
i2c, soft-i2c: switch to new multibus/multiadapter support
- added to soft_i2c driver new multibus/multiadpater support
- adapted all config files, which uses this driver
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Diffstat (limited to 'include/configs/RPXlite.h')
| -rw-r--r-- | include/configs/RPXlite.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/configs/RPXlite.h b/include/configs/RPXlite.h index 563abea..9a385a4 100644 --- a/include/configs/RPXlite.h +++ b/include/configs/RPXlite.h @@ -62,6 +62,36 @@ #undef CONFIG_SYS_LOADS_BAUD_CHANGE /* don't allow baudrate change */ #define CONFIG_BZIP2 /* Include support for bzip2 compressed images */ + +/* enable I2C and select the hardware/software driver */ +#define CONFIG_SYS_I2C +#define CONFIG_SYS_I2C_SOFT /* I2C bit-banged */ +#define CONFIG_SYS_I2C_SOFT_SPEED 40000 /* 40 kHz is supposed to work */ +#define CONFIG_SYS_I2C_SOFT_SLAVE 0xFE +/* Software (bit-bang) I2C driver configuration */ +#define PB_SCL 0x00000020 /* PB 26 */ +#define PB_SDA 0x00000010 /* PB 27 */ + +#define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL) +#define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA) +#define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA) +#define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) +#define I2C_SDA(bit) if (bit) \ + immr->im_cpm.cp_pbdat |= PB_SDA; \ + else \ + immr->im_cpm.cp_pbdat &= ~PB_SDA +#define I2C_SCL(bit) if (bit) \ + immr->im_cpm.cp_pbdat |= PB_SCL; \ + else \ + immr->im_cpm.cp_pbdat &= ~PB_SCL +#define I2C_DELAY udelay(5) /* 1/4 I2C clock duration */ + +/* M41T11 Serial Access Timekeeper(R) SRAM */ +#define CONFIG_RTC_M41T11 1 +#define CONFIG_SYS_I2C_RTC_ADDR 0x68 +/* play along with the linux driver */ +#define CONFIG_SYS_M41T11_BASE_YEAR 1900 + #undef CONFIG_WATCHDOG /* watchdog disabled */ /* |