[PATCH v5 1/2] i2c: aspeed: added driver for Aspeed I2C
Wolfram Sang
wsa at the-dreams.de
Mon Dec 12 09:26:22 AEDT 2016
On Tue, Nov 29, 2016 at 05:00:17PM -0800, Brendan Higgins wrote:
> Added initial master and slave support for Aspeed I2C controller.
> Supports fourteen busses present in ast24xx and ast25xx BMC SoCs by
> Aspeed.
>
> Signed-off-by: Brendan Higgins <brendanhiggins at google.com>
BTW first the bindings patch please, then the driver.
And one seperate question I just stumbled over:
> + /* Switch from master mode to slave mode. */
> + func_ctrl_reg_val = aspeed_i2c_read(bus, ASPEED_I2C_FUN_CTRL_REG);
> + func_ctrl_reg_val &= ~ASPEED_I2CD_MASTER_EN;
> + func_ctrl_reg_val |= ASPEED_I2CD_SLAVE_EN;
> + aspeed_i2c_write(bus, func_ctrl_reg_val, ASPEED_I2C_FUN_CTRL_REG);
Can't the hardware work both as master and slave on the same bus?
Regards,
Wolfram
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