[PATCH] arm64: dts: rockchip: remove bus-width from mmc nodes in rk3308.dtsi

[PATCH] arm64: dts: rockchip: remove bus-width from mmc nodes in rk3308.dtsi

[Johan Jonker]

The 'bus-width' property for mmc nodes is defined both in
'rk3308.dtsi' and 'rk3308-roc-cc.dts'.
In line with the other Rockchip SoCs define that in a user dts only,
so remove all entries from mmc nodes in 'rk3308.dtsi'.

Signed-off-by: Johan Jonker <jbx6244-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 arch/arm64/boot/dts/rockchip/rk3308.dtsi | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3308.dtsi b/arch/arm64/boot/dts/rockchip/rk3308.dtsi
index a9b98555d..130771ede 100644
--- a/arch/arm64/boot/dts/rockchip/rk3308.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3308.dtsi
@@ -587,7 +587,6 @@
 		compatible = "rockchip,rk3308-dw-mshc", "rockchip,rk3288-dw-mshc";
 		reg = <0x0 0xff480000 0x0 0x4000>;
 		interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
-		bus-width = <4>;
 		clocks = <&cru HCLK_SDMMC>, <&cru SCLK_SDMMC>,
 			 <&cru SCLK_SDMMC_DRV>, <&cru SCLK_SDMMC_SAMPLE>;
 		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
@@ -602,7 +601,6 @@
 		compatible = "rockchip,rk3308-dw-mshc", "rockchip,rk3288-dw-mshc";
 		reg = <0x0 0xff490000 0x0 0x4000>;
 		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
-		bus-width = <8>;
 		clocks = <&cru HCLK_EMMC>, <&cru SCLK_EMMC>,
 			 <&cru SCLK_EMMC_DRV>, <&cru SCLK_EMMC_SAMPLE>;
 		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
@@ -615,7 +613,6 @@
 		compatible = "rockchip,rk3308-dw-mshc", "rockchip,rk3288-dw-mshc";
 		reg = <0x0 0xff4a0000 0x0 0x4000>;
 		interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
-		bus-width = <4>;
 		clocks = <&cru HCLK_SDIO>, <&cru SCLK_SDIO>,
 			 <&cru SCLK_SDIO_DRV>, <&cru SCLK_SDIO_SAMPLE>;
 		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
-- 
2.11.0

Re: [PATCH] arm64: dts: rockchip: remove bus-width from mmc nodes in rk3308.dtsi

[Robin Murphy]

On 2020-04-13 8:36 pm, Johan Jonker wrote:
> The 'bus-width' property for mmc nodes is defined both in
> 'rk3308.dtsi' and 'rk3308-roc-cc.dts'.
> In line with the other Rockchip SoCs define that in a user dts only,
> so remove all entries from mmc nodes in 'rk3308.dtsi'.

Judging by the pinctrl entries, these represent the number of pins 
provided by the SoC itself. Obviously boards need to override that if 
for some reason they don't wire up all the available data lines, but it 
seems backwards to have every board restate the SoC's default value.

In fact, having brought it up, for this particular case the pinctrl 
setting is inherently related to the bus width, so having one without 
the other in either place doesn't smell right.

Robin.

> Signed-off-by: Johan Jonker <jbx6244-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---
>   arch/arm64/boot/dts/rockchip/rk3308.dtsi | 3 ---
>   1 file changed, 3 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3308.dtsi b/arch/arm64/boot/dts/rockchip/rk3308.dtsi
> index a9b98555d..130771ede 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3308.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3308.dtsi
> @@ -587,7 +587,6 @@
>   		compatible = "rockchip,rk3308-dw-mshc", "rockchip,rk3288-dw-mshc";
>   		reg = <0x0 0xff480000 0x0 0x4000>;
>   		interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
> -		bus-width = <4>;
>   		clocks = <&cru HCLK_SDMMC>, <&cru SCLK_SDMMC>,
>   			 <&cru SCLK_SDMMC_DRV>, <&cru SCLK_SDMMC_SAMPLE>;
>   		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
> @@ -602,7 +601,6 @@
>   		compatible = "rockchip,rk3308-dw-mshc", "rockchip,rk3288-dw-mshc";
>   		reg = <0x0 0xff490000 0x0 0x4000>;
>   		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
> -		bus-width = <8>;
>   		clocks = <&cru HCLK_EMMC>, <&cru SCLK_EMMC>,
>   			 <&cru SCLK_EMMC_DRV>, <&cru SCLK_EMMC_SAMPLE>;
>   		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
> @@ -615,7 +613,6 @@
>   		compatible = "rockchip,rk3308-dw-mshc", "rockchip,rk3288-dw-mshc";
>   		reg = <0x0 0xff4a0000 0x0 0x4000>;
>   		interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
> -		bus-width = <4>;
>   		clocks = <&cru HCLK_SDIO>, <&cru SCLK_SDIO>,
>   			 <&cru SCLK_SDIO_DRV>, <&cru SCLK_SDIO_SAMPLE>;
>   		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
> 

Re: [PATCH] arm64: dts: rockchip: remove bus-width from mmc nodes in rk3308.dtsi

[Heiko Stübner]

Am Dienstag, 14. April 2020, 12:02:46 CEST schrieb Robin Murphy:
> On 2020-04-13 8:36 pm, Johan Jonker wrote:
> > The 'bus-width' property for mmc nodes is defined both in
> > 'rk3308.dtsi' and 'rk3308-roc-cc.dts'.
> > In line with the other Rockchip SoCs define that in a user dts only,
> > so remove all entries from mmc nodes in 'rk3308.dtsi'.
> 
> Judging by the pinctrl entries, these represent the number of pins 
> provided by the SoC itself. Obviously boards need to override that if 
> for some reason they don't wire up all the available data lines, but it 
> seems backwards to have every board restate the SoC's default value.

Yep, especially as most boards follow the reference layout to some extent
and so far I haven't seen any board not use the full 4 pins for sdmmc
for example :-)


> In fact, having brought it up, for this particular case the pinctrl 
> setting is inherently related to the bus width, so having one without 
> the other in either place doesn't smell right.

So the bus width should be removed from the board file.


> > Signed-off-by: Johan Jonker <jbx6244-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > ---
> >   arch/arm64/boot/dts/rockchip/rk3308.dtsi | 3 ---
> >   1 file changed, 3 deletions(-)
> > 
> > diff --git a/arch/arm64/boot/dts/rockchip/rk3308.dtsi b/arch/arm64/boot/dts/rockchip/rk3308.dtsi
> > index a9b98555d..130771ede 100644
> > --- a/arch/arm64/boot/dts/rockchip/rk3308.dtsi
> > +++ b/arch/arm64/boot/dts/rockchip/rk3308.dtsi
> > @@ -587,7 +587,6 @@
> >   		compatible = "rockchip,rk3308-dw-mshc", "rockchip,rk3288-dw-mshc";
> >   		reg = <0x0 0xff480000 0x0 0x4000>;
> >   		interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
> > -		bus-width = <4>;
> >   		clocks = <&cru HCLK_SDMMC>, <&cru SCLK_SDMMC>,
> >   			 <&cru SCLK_SDMMC_DRV>, <&cru SCLK_SDMMC_SAMPLE>;
> >   		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
> > @@ -602,7 +601,6 @@
> >   		compatible = "rockchip,rk3308-dw-mshc", "rockchip,rk3288-dw-mshc";
> >   		reg = <0x0 0xff490000 0x0 0x4000>;
> >   		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
> > -		bus-width = <8>;
> >   		clocks = <&cru HCLK_EMMC>, <&cru SCLK_EMMC>,
> >   			 <&cru SCLK_EMMC_DRV>, <&cru SCLK_EMMC_SAMPLE>;
> >   		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
> > @@ -615,7 +613,6 @@
> >   		compatible = "rockchip,rk3308-dw-mshc", "rockchip,rk3288-dw-mshc";
> >   		reg = <0x0 0xff4a0000 0x0 0x4000>;
> >   		interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
> > -		bus-width = <4>;
> >   		clocks = <&cru HCLK_SDIO>, <&cru SCLK_SDIO>,
> >   			 <&cru SCLK_SDIO_DRV>, <&cru SCLK_SDIO_SAMPLE>;
> >   		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
> > 
> 

Re: [PATCH] arm64: dts: rockchip: remove bus-width from mmc nodes in rk3308.dtsi

[Johan Jonker]

Hi Robin, Heiko,

If the Rockchip DT maintainers(= Heiko) agree that the new line for the
'bus-width' properties is that it should be placed in dtsi I'll produce
a version 2. Please advise what should be done with the other Rockchip
SoCs. Change them too?

Johan.

On 4/14/20 12:02 PM, Robin Murphy wrote:
> On 2020-04-13 8:36 pm, Johan Jonker wrote:
>> The 'bus-width' property for mmc nodes is defined both in
>> 'rk3308.dtsi' and 'rk3308-roc-cc.dts'.
>> In line with the other Rockchip SoCs define that in a user dts only,
>> so remove all entries from mmc nodes in 'rk3308.dtsi'.
> 
> Judging by the pinctrl entries, these represent the number of pins
> provided by the SoC itself. Obviously boards need to override that if
> for some reason they don't wire up all the available data lines, but it
> seems backwards to have every board restate the SoC's default value.
> 
> In fact, having brought it up, for this particular case the pinctrl
> setting is inherently related to the bus width, so having one without
> the other in either place doesn't smell right.
> 
> Robin.
> 
>> Signed-off-by: Johan Jonker <jbx6244-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>> ---
>>   arch/arm64/boot/dts/rockchip/rk3308.dtsi | 3 ---
>>   1 file changed, 3 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/rockchip/rk3308.dtsi
>> b/arch/arm64/boot/dts/rockchip/rk3308.dtsi
>> index a9b98555d..130771ede 100644
>> --- a/arch/arm64/boot/dts/rockchip/rk3308.dtsi
>> +++ b/arch/arm64/boot/dts/rockchip/rk3308.dtsi
>> @@ -587,7 +587,6 @@
>>           compatible = "rockchip,rk3308-dw-mshc",
>> "rockchip,rk3288-dw-mshc";
>>           reg = <0x0 0xff480000 0x0 0x4000>;
>>           interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
>> -        bus-width = <4>;
>>           clocks = <&cru HCLK_SDMMC>, <&cru SCLK_SDMMC>,
>>                <&cru SCLK_SDMMC_DRV>, <&cru SCLK_SDMMC_SAMPLE>;
>>           clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
>> @@ -602,7 +601,6 @@
>>           compatible = "rockchip,rk3308-dw-mshc",
>> "rockchip,rk3288-dw-mshc";
>>           reg = <0x0 0xff490000 0x0 0x4000>;
>>           interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
>> -        bus-width = <8>;
>>           clocks = <&cru HCLK_EMMC>, <&cru SCLK_EMMC>,
>>                <&cru SCLK_EMMC_DRV>, <&cru SCLK_EMMC_SAMPLE>;
>>           clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
>> @@ -615,7 +613,6 @@
>>           compatible = "rockchip,rk3308-dw-mshc",
>> "rockchip,rk3288-dw-mshc";
>>           reg = <0x0 0xff4a0000 0x0 0x4000>;
>>           interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
>> -        bus-width = <4>;
>>           clocks = <&cru HCLK_SDIO>, <&cru SCLK_SDIO>,
>>                <&cru SCLK_SDIO_DRV>, <&cru SCLK_SDIO_SAMPLE>;
>>           clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
>>

Re: [PATCH] arm64: dts: rockchip: remove bus-width from mmc nodes in rk3308.dtsi

[Heiko Stübner]

Hi Johan,

Am Dienstag, 14. April 2020, 13:45:00 CEST schrieb Johan Jonker:
> Hi Robin, Heiko,
> 
> If the Rockchip DT maintainers(= Heiko) agree that the new line for the
> 'bus-width' properties is that it should be placed in dtsi I'll produce
> a version 2. Please advise what should be done with the other Rockchip
> SoCs. Change them too?

(1) as Robin pointed out bus-width and pinctrl containing the bus-pins
    should be in the same file, as they describe parts of the same property
(2) essentially it is ok for pinctrl-defaults to live in the dtsi, when there
    are no pin variants ... (like the uartX_mY pin variants), so if you enable
    a node and only have essentially one pin variant to enable, this should
    live in the soc dtsi (like essentially all boards using 4-pin sdmmc
    and 8-pin emmc)
(3) Fixing other devicetrees is optional, so I won't oppose it of course
    but it's also not something "that must be done" ;-)


Heiko


> On 4/14/20 12:02 PM, Robin Murphy wrote:
> > On 2020-04-13 8:36 pm, Johan Jonker wrote:
> >> The 'bus-width' property for mmc nodes is defined both in
> >> 'rk3308.dtsi' and 'rk3308-roc-cc.dts'.
> >> In line with the other Rockchip SoCs define that in a user dts only,
> >> so remove all entries from mmc nodes in 'rk3308.dtsi'.
> > 
> > Judging by the pinctrl entries, these represent the number of pins
> > provided by the SoC itself. Obviously boards need to override that if
> > for some reason they don't wire up all the available data lines, but it
> > seems backwards to have every board restate the SoC's default value.
> > 
> > In fact, having brought it up, for this particular case the pinctrl
> > setting is inherently related to the bus width, so having one without
> > the other in either place doesn't smell right.
> > 
> > Robin.
> > 
> >> Signed-off-by: Johan Jonker <jbx6244-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> >> ---
> >>   arch/arm64/boot/dts/rockchip/rk3308.dtsi | 3 ---
> >>   1 file changed, 3 deletions(-)
> >>
> >> diff --git a/arch/arm64/boot/dts/rockchip/rk3308.dtsi
> >> b/arch/arm64/boot/dts/rockchip/rk3308.dtsi
> >> index a9b98555d..130771ede 100644
> >> --- a/arch/arm64/boot/dts/rockchip/rk3308.dtsi
> >> +++ b/arch/arm64/boot/dts/rockchip/rk3308.dtsi
> >> @@ -587,7 +587,6 @@
> >>           compatible = "rockchip,rk3308-dw-mshc",
> >> "rockchip,rk3288-dw-mshc";
> >>           reg = <0x0 0xff480000 0x0 0x4000>;
> >>           interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
> >> -        bus-width = <4>;
> >>           clocks = <&cru HCLK_SDMMC>, <&cru SCLK_SDMMC>,
> >>                <&cru SCLK_SDMMC_DRV>, <&cru SCLK_SDMMC_SAMPLE>;
> >>           clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
> >> @@ -602,7 +601,6 @@
> >>           compatible = "rockchip,rk3308-dw-mshc",
> >> "rockchip,rk3288-dw-mshc";
> >>           reg = <0x0 0xff490000 0x0 0x4000>;
> >>           interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
> >> -        bus-width = <8>;
> >>           clocks = <&cru HCLK_EMMC>, <&cru SCLK_EMMC>,
> >>                <&cru SCLK_EMMC_DRV>, <&cru SCLK_EMMC_SAMPLE>;
> >>           clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
> >> @@ -615,7 +613,6 @@
> >>           compatible = "rockchip,rk3308-dw-mshc",
> >> "rockchip,rk3288-dw-mshc";
> >>           reg = <0x0 0xff4a0000 0x0 0x4000>;
> >>           interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
> >> -        bus-width = <4>;
> >>           clocks = <&cru HCLK_SDIO>, <&cru SCLK_SDIO>,
> >>                <&cru SCLK_SDIO_DRV>, <&cru SCLK_SDIO_SAMPLE>;
> >>           clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
> >>
> 
>