diff options
| author | Simon Glass <sjg@chromium.org> | 2011-10-03 13:10:33 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2011-10-07 10:00:41 -0700 |
| commit | 3ded9c10e32eb780070ca8412fb57818b73d3b50 (patch) | |
| tree | c58ab10dcb8453b535412ce092c632e2caf6cd91 /arch/arm/include/asm/arch-tegra | |
| parent | 817affa29cafc5d901183eea2484fc3b88baa60d (diff) | |
tegra3: i2c: Add low level functions for T30
We need these functions to set up the power chip during low-level init.
BUG=chromium-os:21033
TEST=build and boot on Seaboard
Change-Id: I69b9d3c12581e0a71db39b031b9ea2ef4ec184bf
Reviewed-on: http://gerrit.chromium.org/gerrit/8696
Reviewed-by: Che-Liang Chiou <clchiou@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/arm/include/asm/arch-tegra')
| -rw-r--r-- | arch/arm/include/asm/arch-tegra/i2c.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-tegra/i2c.h b/arch/arm/include/asm/arch-tegra/i2c.h index 25fb21d3fc..458cd5ef60 100644 --- a/arch/arm/include/asm/arch-tegra/i2c.h +++ b/arch/arm/include/asm/arch-tegra/i2c.h @@ -168,4 +168,28 @@ struct i2c_ctlr { #define I2C_INT_NO_ACK_RANGE 3 : 3 #define I2C_INT_ARBITRATION_LOST_RANGE 2 : 2 +/** + * Low level, hopefully temporary, functions to write values to the + * Tegra DVC I2C controller. These are used by T30 init, when running + * on the AVP CPU, before the Cortex-A9s are up. It is not easy to + * have the i2c infrastructure up that early, but we still want to put + * this code in the driver + */ + +/** + * Write an address (with config) to the DVC I2C + * + * @param addr Address to write + * @param config Config to write + */ +void tegra_i2c_ll_write_addr(uint addr, uint config); + +/** + * Write a data word (with config) to the DVC I2C + * + * @param data Data to write + * @param config Config to write + */ +void tegra_i2c_ll_write_data(uint data, uint config); + #endif |