[U-Boot] [PATCH v3 5/9] tegra: i2c: Add I2C driver

[Heiko Schocher]

Hello Simon,

Simon Glass wrote:
> From: Yen Lin <yelin at nvidia.com>
> 
> Add basic i2c driver for Tegra2 with 8- and 16-bit address support.
> The driver requires CONFIG_OF_CONTROL to obtain its configuration
> from the device tree.
> 
> (Simon Glass: sjg at chromium.org modified for upstream)
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
> Changes in v2:
> - Adjust definitions to fit new peripheral clock bindings
> - Change i2c array to static
> - Make i2c/dvc decision come from fdt
> - Remove i2c configuring using CONFIG (use fdt instead)
> - Return an error if an unavailable i2c bus is selected
> - Simplify code in i2c_addr_ok()
> - Tidy comment style
> - Use DIV_ROUND_UP() instead of a home-grown macro
> - Use new fdtdec alias decode function
> 
> Changes in v3:
> - Add TEGRA_I2C_NUM_CONTROLLERS to select number of I2C ports
> - Add comment on how to select pinmux for I2C2
> - Change i2c_init() to reset speed and override the fdt setting
> - Fix i2c_addr_ok() function to check addresses correctly
> - Rename driver to tegra_i2c since it will later be shared with Tegra3
> - Tidy up I2C speed selection to use the peripheral clock
> 
>  arch/arm/include/asm/arch-tegra2/tegra_i2c.h |  160 ++++++++
>  drivers/i2c/Makefile                         |    1 +
>  drivers/i2c/tegra_i2c.c                      |  566 ++++++++++++++++++++++++++
>  include/fdtdec.h                             |    2 +
>  lib/fdtdec.c                                 |    2 +
>  5 files changed, 731 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/include/asm/arch-tegra2/tegra_i2c.h
>  create mode 100644 drivers/i2c/tegra_i2c.c

Acked-by: Heiko Schocher <hs at denx.de>

bye,
Heiko
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