| Message ID | 1359487175-21064-3-git-send-email-twarren@nvidia.com |
|---|---|
| State | Superseded |
| Delegated to: | Tom Warren |
| Headers | show |
On 01/29/2013 12:19 PM, Tom Warren wrote: > Tested all 5 'buses', i2c probe enumerates device addresses on bus > 1 and 2. Why don't the other 3 buses work? > Note that this uses the tegra_i2c.c driver w/o modification. The kernel patches imply some mandatory differences in clock divider programming; see: https://patchwork.kernel.org/patch/1936371/
Stephen, On Tue, Jan 29, 2013 at 1:11 PM, Stephen Warren <swarren@wwwdotorg.org> wrote: > On 01/29/2013 12:19 PM, Tom Warren wrote: >> Tested all 5 'buses', i2c probe enumerates device addresses on bus >> 1 and 2. > > Why don't the other 3 buses work? No idea, but I assume because my Dalmore doesn't have sub-boards w/I2C devices connected (gyro, accel, camera, etc.) > >> Note that this uses the tegra_i2c.c driver w/o modification. > > The kernel patches imply some mandatory differences in clock divider > programming; see: > > https://patchwork.kernel.org/patch/1936371/ I'll take a look. Thanks. Tom
diff --git a/include/configs/dalmore.h b/include/configs/dalmore.h index ce32c80..b1a6e34 100644 --- a/include/configs/dalmore.h +++ b/include/configs/dalmore.h @@ -41,6 +41,15 @@ #define CONFIG_MACH_TYPE MACH_TYPE_DALMORE #define CONFIG_BOARD_EARLY_INIT_F + +/* I2C */ +#define CONFIG_TEGRA_I2C +#define CONFIG_SYS_I2C_INIT_BOARD +#define CONFIG_I2C_MULTI_BUS +#define CONFIG_SYS_MAX_I2C_BUS TEGRA_I2C_NUM_CONTROLLERS +#define CONFIG_SYS_I2C_SPEED 100000 +#define CONFIG_CMD_I2C + #define CONFIG_ENV_IS_NOWHERE #define MACH_TYPE_DALMORE 4304 /* not yet in mach-types.h */ diff --git a/include/configs/tegra114-common.h b/include/configs/tegra114-common.h index 0033530..c2986d8 100644 --- a/include/configs/tegra114-common.h +++ b/include/configs/tegra114-common.h @@ -76,4 +76,7 @@ #define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/tegra114/u-boot-spl.lds" +/* Total I2C ports on Tegra114 */ +#define TEGRA_I2C_NUM_CONTROLLERS 5 + #endif /* _TEGRA114_COMMON_H_ */
Tested all 5 'buses', i2c probe enumerates device addresses on bus 1 and 2. Note that this uses the tegra_i2c.c driver w/o modification. Signed-off-by: Tom Warren <twarren@nvidia.com> --- include/configs/dalmore.h | 9 +++++++++ include/configs/tegra114-common.h | 3 +++ 2 files changed, 12 insertions(+), 0 deletions(-)