[U-Boot] [U-Boot, 2/4] rockchip: rk322x: update dts node for mmc

Dr. Philipp Tomsich philipp.tomsich at theobroma-systems.com
Thu Jul 27 08:17:20 UTC 2017


> On 27 Jul 2017, at 03:12, Kever Yang <kever.yang at rock-chips.com> wrote:
> 
> Philipp,
> 
> 
> On 07/27/2017 01:42 AM, Philipp Tomsich wrote:
>> 
>> 
>> On Wed, 26 Jul 2017, Kever Yang wrote:
>> 
>>> mmc using 150000000 as max-frequency and do not use fifo-mode.
>> 
>> Could you expand on the message here (for the benefit of someone reading this a couple years down the line): did your enabled the FIFO mode now that the DRAM protection was disabled (which is my guess)?
> 
> The 150M for max-frequency is sync from rk3288, from what I have test, the speed
> change from 37.125M to 49.5M after I update this patch, it improve the mmc speed.
> 
> The fifo-mode is not need, I will update it, for the upstream version do not have
> this property, this only in my local source, sorry.

Just copy this info commit message then and I’ll apply.
Thanks.

> Thanks,
> - Kever
>> 
>>> 
>>> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
>>> Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
>>> ---
>>> 
>>> arch/arm/dts/rk3229-evb.dts | 2 --
>>> arch/arm/dts/rk322x.dtsi    | 4 ++--
>>> 2 files changed, 2 insertions(+), 4 deletions(-)
>>> 
>>> diff --git a/arch/arm/dts/rk3229-evb.dts b/arch/arm/dts/rk3229-evb.dts
>>> index 1eac37d..ae0b0a4 100644
>>> --- a/arch/arm/dts/rk3229-evb.dts
>>> +++ b/arch/arm/dts/rk3229-evb.dts
>>> @@ -68,7 +68,6 @@
>>> 
>>> &emmc {
>>>    u-boot,dm-pre-reloc;
>>> -    fifo-mode;
>>>    status = "okay";
>>> };
>>> 
>>> @@ -79,7 +78,6 @@
>>>    cap-sd-highspeed;
>>>    card-detect-delay = <200>;
>>>    disable-wp;
>>> -    max-frequency = <50000000>;
>>>    num-slots = <1>;
>>>    supports-sd;
>>> };
>>> diff --git a/arch/arm/dts/rk322x.dtsi b/arch/arm/dts/rk322x.dtsi
>>> index ddbe113..22324f9 100644
>>> --- a/arch/arm/dts/rk322x.dtsi
>>> +++ b/arch/arm/dts/rk322x.dtsi
>>> @@ -388,6 +388,7 @@
>>>    sdmmc: dwmmc at 30000000 {
>>>        compatible = "rockchip,rk3228-dw-mshc", "rockchip,rk3288-dw-mshc";
>>>        reg = <0x30000000 0x4000>;
>>> +        max-frequency = <150000000>;
>>>        interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
>>>        clocks = <&cru HCLK_SDMMC>, <&cru SCLK_SDMMC>,
>>>             <&cru SCLK_SDMMC_DRV>, <&cru SCLK_SDMMC_SAMPLE>;
>>> @@ -414,9 +415,8 @@
>>>    emmc: dwmmc at 30020000 {
>>>        compatible = "rockchip,rk3288-dw-mshc";
>>>        reg = <0x30020000 0x4000>;
>>> +        max-frequency = <150000000>;
>>>        interrupts = <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>;
>>> -        clock-frequency = <37500000>;
>>> -        max-frequency = <37500000>;
>>>        clocks = <&cru HCLK_EMMC>, <&cru SCLK_EMMC>,
>>>             <&cru SCLK_EMMC_DRV>, <&cru SCLK_EMMC_SAMPLE>;
>>>        clock-names = "biu", "ciu", "ciu_drv", "ciu_sample";
>>> 
>> 
> 
> 



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