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| author | Tom Rini <trini@ti.com> | 2013-07-24 09:22:28 -0400 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-07-24 09:50:24 -0400 |
| commit | c2120fbfbc4d1f6953228f86be8bdbf38bacfdab (patch) | |
| tree | 14cd8ec9a0a61f7113149be38d79808cd5e955f8 /include/configs/RPXlite.h | |
| parent | e85427fd66a21b39145a47e67871a8863c0e5591 (diff) | |
| parent | ecbd7e1ec7280d90d151a99691f74b892588cadd (diff) | |
| download | u-boot-imx-c2120fbfbc4d1f6953228f86be8bdbf38bacfdab.zip u-boot-imx-c2120fbfbc4d1f6953228f86be8bdbf38bacfdab.tar.gz u-boot-imx-c2120fbfbc4d1f6953228f86be8bdbf38bacfdab.tar.bz2 | |
Merge branch 'master' of git://git.denx.de/u-boot-i2c
The sandburst-specific i2c drivers have been deleted, conflict was just
over the SPDX conversion.
Conflicts:
board/sandburst/common/ppc440gx_i2c.c
board/sandburst/common/ppc440gx_i2c.h
Signed-off-by: Tom Rini <trini@ti.com>
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 2813256..ada7e14 100644 --- a/include/configs/RPXlite.h +++ b/include/configs/RPXlite.h @@ -46,6 +46,36 @@ #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 */ /* |