[U-Boot] [PATCH v3 25/25] rockchip: Add a simple README

Simon Glass
2015-08-06T23:19:26Z

Hi Christoph,

On 6 August 2015 at 09:35, Christoph Fritz <chf.fritz@googlemail.com> wrote:
> Hi Simon
>
> On Tue, 2015-06-23 at 17:29 -0600, Simon Glass wrote:
>> +Future work
>> +===========
>> +
>> +Immediate priorities are:
>> +
>> +- MMC support (in U-Boot itself)
>> +- GPIO (driver exists but is lightly tested)
>> +- I2C (driver exists but is non-functional)
>> +- USB host
>> +- USB device
>> +- PMIC and regulators (only ACT8846 is supported at present)
>
> Is it always necessary for RK3288 to have full PMIC support? Wouldn't it
> be possible in most cases to go with the reset-default-values (of a
> let's say ACT8846) to boot Linux from an SD-Card?

For U-Boot to start and boot at full speed it is often necessary ti
increase the voltage on various rails. Some peripherals may require
regulators to be enabled. It depends on your requirements.

Regards,
Simon