Re: [PATCH] ARM64: dts: rockchip: add core dtsi file for RK3399 SoCs

From	"Huang, Tao" <huangtao@rock-chips.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH] ARM64: dts: rockchip: add core dtsi file for RK3399 SoCs
Date	2016-04-22 06:30 +0200
Message-ID	<rqAT8-4e7-29@gated-at.bofh.it> (permalink)
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Hi, Doug:
On 2016年04月22日 06:38, Doug Anderson wrote:
>
>>> +     i2c1: i2c@ff110000 {
>>> +             compatible = "rockchip,rk3399-i2c";
>> David respun the rk3399 i2c-support on tuesday, so this and the others below
>> are waiting on Wolfram to take a look.
> I think it can work with the rk3288-i2c as a fallback, at least for
> low speed stuff, right?  Should this be:
>
> compatible = "rockchip,rk3399-i2c", "rockchip,rk3288-i2c"
>
> Looks like that was done for rk3368.
No. For RK3399 I2C controller:
The I2C controller uses the APB clock/clk_i2c as the working clock. The
APB clock will determine the I2C bus clock, clk_i2c is the function clk,
up to 200MHz.
Chips such as RK3288/3368 only uses APB clock. So old driver do not work
on RK3399.

Thanks,
Huang, Tao

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Re: [PATCH] ARM64: dts: rockchip: add core dtsi file for RK3399 SoCs Heiko Stübner <heiko@sntech.de> - 2016-04-22 00:10 +0200
  Re: [PATCH] ARM64: dts: rockchip: add core dtsi file for RK3399 SoCs Doug Anderson <dianders@chromium.org> - 2016-04-22 00:40 +0200
    Re: [PATCH] ARM64: dts: rockchip: add core dtsi file for RK3399 SoCs Heiko Stübner <heiko@sntech.de> - 2016-04-22 00:50 +0200
    Re: [PATCH] ARM64: dts: rockchip: add core dtsi file for RK3399 SoCs "Huang, Tao" <huangtao@rock-chips.com> - 2016-04-22 06:30 +0200

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