[PATCH] ARM: dts: use vqmmc-supply of emmc/sd for exynos4412-odroid-common

[PATCH] ARM: dts: use vqmmc-supply of emmc/sd for exynos4412-odroid-common

[Jaehoon Chung]

Currently vmmc's property is wrong.
If it needs to control two supplies, then it has to use vmmc/vqmmc-supply.
(Card supply power and I/O Line supply Power.)

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
---
 arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
index ca7d168..4ddabfd 100644
--- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
+++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
@@ -461,10 +461,10 @@
 &mshc_0 {
 	pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
 	pinctrl-names = "default";
-	vmmc-supply = <&ldo20_reg &buck8_reg>;
+	vmmc-supply = <&ldo20_reg>;
+	vqmmc-supply = <&buck8_reg>;
 	mmc-pwrseq = <&emmc_pwrseq>;
 	status = "okay";
-
 	num-slots = <1>;
 	broken-cd;
 	card-detect-delay = <200>;
@@ -485,7 +485,8 @@
 	bus-width = <4>;
 	pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
 	pinctrl-names = "default";
-	vmmc-supply = <&ldo4_reg &ldo21_reg>;
+	vmmc-supply = <&ldo21_reg>;
+	vqmmc-supply = <&ldo4_reg>;
 	cd-gpios = <&gpk2 2 0>;
 	cd-inverted;
 	status = "okay";
-- 
1.9.1

Re: [PATCH] ARM: dts: use vqmmc-supply of emmc/sd for exynos4412-odroid-common

[Javier Martinez Canillas]

Hello Jaehoon,

On 08/27/2015 11:29 AM, Jaehoon Chung wrote:
> Currently vmmc's property is wrong.
> If it needs to control two supplies, then it has to use vmmc/vqmmc-supply.
> (Card supply power and I/O Line supply Power.)
> 
> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
> ---
>  arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> index ca7d168..4ddabfd 100644
> --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> @@ -461,10 +461,10 @@
>  &mshc_0 {
>  	pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
>  	pinctrl-names = "default";
> -	vmmc-supply = <&ldo20_reg &buck8_reg>;
> +	vmmc-supply = <&ldo20_reg>;
> +	vqmmc-supply = <&buck8_reg>;
>  	mmc-pwrseq = <&emmc_pwrseq>;
>  	status = "okay";
> -
>  	num-slots = <1>;
>  	broken-cd;
>  	card-detect-delay = <200>;
> @@ -485,7 +485,8 @@
>  	bus-width = <4>;
>  	pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
>  	pinctrl-names = "default";
> -	vmmc-supply = <&ldo4_reg &ldo21_reg>;
> +	vmmc-supply = <&ldo21_reg>;
> +	vqmmc-supply = <&ldo4_reg>;
>  	cd-gpios = <&gpk2 2 0>;
>  	cd-inverted;
>  	status = "okay";
>

I didn't check against the board schematics
but the change makes sense to me.

Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
 
Best regards,
-- 
Javier Martinez Canillas
Open Source Group
Samsung Research America

Re: [PATCH] ARM: dts: use vqmmc-supply of emmc/sd for exynos4412-odroid-common

[Krzysztof Kozlowski]

W dniu 27.08.2015 o 18:29, Jaehoon Chung pisze:
> Currently vmmc's property is wrong.
> If it needs to control two supplies, then it has to use vmmc/vqmmc-supply.
> (Card supply power and I/O Line supply Power.)
> 
> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
> ---
>  arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> index ca7d168..4ddabfd 100644
> --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> @@ -461,10 +461,10 @@
>  &mshc_0 {
>  	pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
>  	pinctrl-names = "default";
> -	vmmc-supply = <&ldo20_reg &buck8_reg>;
> +	vmmc-supply = <&ldo20_reg>;
> +	vqmmc-supply = <&buck8_reg>;

Shouldn't this be reversed? LDO20 has 1.8V and it goes to MMC connector,
so it should be VQMMC?

In the same time I can't find on schematics where BUCK8 goes...

The SDHCI_2 node below looks good.

Best regards,
Krzysztof

>  	mmc-pwrseq = <&emmc_pwrseq>;
>  	status = "okay";
> -
>  	num-slots = <1>;
>  	broken-cd;
>  	card-detect-delay = <200>;
> @@ -485,7 +485,8 @@
>  	bus-width = <4>;
>  	pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
>  	pinctrl-names = "default";
> -	vmmc-supply = <&ldo4_reg &ldo21_reg>;
> +	vmmc-supply = <&ldo21_reg>;
> +	vqmmc-supply = <&ldo4_reg>;
>  	cd-gpios = <&gpk2 2 0>;
>  	cd-inverted;
>  	status = "okay";
> 

Re: [PATCH] ARM: dts: use vqmmc-supply of emmc/sd for exynos4412-odroid-common

[Jaehoon Chung]

On 08/27/2015 09:26 PM, Krzysztof Kozlowski wrote:
> W dniu 27.08.2015 o 18:29, Jaehoon Chung pisze:
>> Currently vmmc's property is wrong.
>> If it needs to control two supplies, then it has to use vmmc/vqmmc-supply.
>> (Card supply power and I/O Line supply Power.)
>>
>> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
>> ---
>>  arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 7 ++++---
>>  1 file changed, 4 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>> index ca7d168..4ddabfd 100644
>> --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>> +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>> @@ -461,10 +461,10 @@
>>  &mshc_0 {
>>  	pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
>>  	pinctrl-names = "default";
>> -	vmmc-supply = <&ldo20_reg &buck8_reg>;
>> +	vmmc-supply = <&ldo20_reg>;
>> +	vqmmc-supply = <&buck8_reg>;
> 
> Shouldn't this be reversed? LDO20 has 1.8V and it goes to MMC connector,
> so it should be VQMMC?

If my schematics is right thing, buck8 is used LAN card power.
I will send after removing buck8_reg. how about?
Anyway, Thanks for pointing out. :)

I don't know who this regulator applied. I have guessed that it used for eMMC.
Sorry for guessing.

Best Regards,
Jaehoon Chung

> 
> In the same time I can't find on schematics where BUCK8 goes...
> 
> The SDHCI_2 node below looks good.
> 
> Best regards,
> Krzysztof
> 
>>  	mmc-pwrseq = <&emmc_pwrseq>;
>>  	status = "okay";
>> -
>>  	num-slots = <1>;
>>  	broken-cd;
>>  	card-detect-delay = <200>;
>> @@ -485,7 +485,8 @@
>>  	bus-width = <4>;
>>  	pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
>>  	pinctrl-names = "default";
>> -	vmmc-supply = <&ldo4_reg &ldo21_reg>;
>> +	vmmc-supply = <&ldo21_reg>;
>> +	vqmmc-supply = <&ldo4_reg>;
>>  	cd-gpios = <&gpk2 2 0>;
>>  	cd-inverted;
>>  	status = "okay";
>>
> 
> 
> 

Re: [PATCH] ARM: dts: use vqmmc-supply of emmc/sd for exynos4412-odroid-common

[Krzysztof Kozlowski]

On 28.08.2015 10:48, Jaehoon Chung wrote:
> On 08/27/2015 09:26 PM, Krzysztof Kozlowski wrote:
>> W dniu 27.08.2015 o 18:29, Jaehoon Chung pisze:
>>> Currently vmmc's property is wrong.
>>> If it needs to control two supplies, then it has to use vmmc/vqmmc-supply.
>>> (Card supply power and I/O Line supply Power.)
>>>
>>> Signed-off-by: Jaehoon Chung <jh80.chung-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
>>> ---
>>>  arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 7 ++++---
>>>  1 file changed, 4 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>>> index ca7d168..4ddabfd 100644
>>> --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>>> +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>>> @@ -461,10 +461,10 @@
>>>  &mshc_0 {
>>>  	pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
>>>  	pinctrl-names = "default";
>>> -	vmmc-supply = <&ldo20_reg &buck8_reg>;
>>> +	vmmc-supply = <&ldo20_reg>;
>>> +	vqmmc-supply = <&buck8_reg>;
>>
>> Shouldn't this be reversed? LDO20 has 1.8V and it goes to MMC connector,
>> so it should be VQMMC?
> 
> If my schematics is right thing, buck8 is used LAN card power.
> I will send after removing buck8_reg. how about?
> Anyway, Thanks for pointing out. :)

Removing this regulator from this node would effectively disable it.
That could affect other components like LAN.

Anyway before fixing the order I would prefer to find the right
regulators used by MSHC node.

Best regards,
Krzysztof

> 
> I don't know who this regulator applied. I have guessed that it used for eMMC.
> Sorry for guessing.
> 
> Best Regards,
> Jaehoon Chung
> 
>>
>> In the same time I can't find on schematics where BUCK8 goes...
>>
>> The SDHCI_2 node below looks good.
>>
>> Best regards,
>> Krzysztof
>>
>>>  	mmc-pwrseq = <&emmc_pwrseq>;
>>>  	status = "okay";
>>> -
>>>  	num-slots = <1>;
>>>  	broken-cd;
>>>  	card-detect-delay = <200>;
>>> @@ -485,7 +485,8 @@
>>>  	bus-width = <4>;
>>>  	pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
>>>  	pinctrl-names = "default";
>>> -	vmmc-supply = <&ldo4_reg &ldo21_reg>;
>>> +	vmmc-supply = <&ldo21_reg>;
>>> +	vqmmc-supply = <&ldo4_reg>;
>>>  	cd-gpios = <&gpk2 2 0>;
>>>  	cd-inverted;
>>>  	status = "okay";
>>>
>>
>>
>>
> 
> 

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Re: [PATCH] ARM: dts: use vqmmc-supply of emmc/sd for exynos4412-odroid-common

[Krzysztof Kozlowski]

On 28.08.2015 10:48, Jaehoon Chung wrote:
> On 08/27/2015 09:26 PM, Krzysztof Kozlowski wrote:
>> W dniu 27.08.2015 o 18:29, Jaehoon Chung pisze:
>>> Currently vmmc's property is wrong.
>>> If it needs to control two supplies, then it has to use vmmc/vqmmc-supply.
>>> (Card supply power and I/O Line supply Power.)
>>>
>>> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
>>> ---
>>>  arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 7 ++++---
>>>  1 file changed, 4 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>>> index ca7d168..4ddabfd 100644
>>> --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>>> +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>>> @@ -461,10 +461,10 @@
>>>  &mshc_0 {
>>>  	pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
>>>  	pinctrl-names = "default";
>>> -	vmmc-supply = <&ldo20_reg &buck8_reg>;
>>> +	vmmc-supply = <&ldo20_reg>;
>>> +	vqmmc-supply = <&buck8_reg>;
>>
>> Shouldn't this be reversed? LDO20 has 1.8V and it goes to MMC connector,
>> so it should be VQMMC?
> 
> If my schematics is right thing, buck8 is used LAN card power.
> I will send after removing buck8_reg. how about?
> Anyway, Thanks for pointing out. :)

Removing this regulator from this node would effectively disable it.
That could affect other components like LAN.

Anyway before fixing the order I would prefer to find the right
regulators used by MSHC node.

Best regards,
Krzysztof

> 
> I don't know who this regulator applied. I have guessed that it used for eMMC.
> Sorry for guessing.
> 
> Best Regards,
> Jaehoon Chung
> 
>>
>> In the same time I can't find on schematics where BUCK8 goes...
>>
>> The SDHCI_2 node below looks good.
>>
>> Best regards,
>> Krzysztof
>>
>>>  	mmc-pwrseq = <&emmc_pwrseq>;
>>>  	status = "okay";
>>> -
>>>  	num-slots = <1>;
>>>  	broken-cd;
>>>  	card-detect-delay = <200>;
>>> @@ -485,7 +485,8 @@
>>>  	bus-width = <4>;
>>>  	pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
>>>  	pinctrl-names = "default";
>>> -	vmmc-supply = <&ldo4_reg &ldo21_reg>;
>>> +	vmmc-supply = <&ldo21_reg>;
>>> +	vqmmc-supply = <&ldo4_reg>;
>>>  	cd-gpios = <&gpk2 2 0>;
>>>  	cd-inverted;
>>>  	status = "okay";
>>>
>>
>>
>>
> 
> 

Re: [PATCH] ARM: dts: use vqmmc-supply of emmc/sd for exynos4412-odroid-common

[Tobias Jakobi]

Hello,

Krzysztof Kozlowski wrote:
> On 28.08.2015 10:48, Jaehoon Chung wrote:
>> On 08/27/2015 09:26 PM, Krzysztof Kozlowski wrote:
>>> W dniu 27.08.2015 o 18:29, Jaehoon Chung pisze:
>>>> Currently vmmc's property is wrong.
>>>> If it needs to control two supplies, then it has to use vmmc/vqmmc-supply.
>>>> (Card supply power and I/O Line supply Power.)
>>>>
>>>> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
>>>> ---
>>>>  arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 7 ++++---
>>>>  1 file changed, 4 insertions(+), 3 deletions(-)
>>>>
>>>> diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>>>> index ca7d168..4ddabfd 100644
>>>> --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>>>> +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
>>>> @@ -461,10 +461,10 @@
>>>>  &mshc_0 {
>>>>  	pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
>>>>  	pinctrl-names = "default";
>>>> -	vmmc-supply = <&ldo20_reg &buck8_reg>;
>>>> +	vmmc-supply = <&ldo20_reg>;
>>>> +	vqmmc-supply = <&buck8_reg>;
>>>
>>> Shouldn't this be reversed? LDO20 has 1.8V and it goes to MMC connector,
>>> so it should be VQMMC?
>>
>> If my schematics is right thing, buck8 is used LAN card power.
>> I will send after removing buck8_reg. how about?
>> Anyway, Thanks for pointing out. :)
> 
> Removing this regulator from this node would effectively disable it.
> That could affect other components like LAN.
> 
> Anyway before fixing the order I would prefer to find the right
> regulators used by MSHC node.
Please see this commit:
https://github.com/tobiasjakobi/linux-odroid/commit/113ffb92e0c7f58f15fe60b47d13eb2d65956d10

This was derived from private communication with Hardkernel.

I can't vouch for correctness though.

With best wishes,
Tobias



> Best regards,
> Krzysztof
> 
>>
>> I don't know who this regulator applied. I have guessed that it used for eMMC.
>> Sorry for guessing.
>>
>> Best Regards,
>> Jaehoon Chung
>>
>>>
>>> In the same time I can't find on schematics where BUCK8 goes...
>>>
>>> The SDHCI_2 node below looks good.
>>>
>>> Best regards,
>>> Krzysztof
>>>
>>>>  	mmc-pwrseq = <&emmc_pwrseq>;
>>>>  	status = "okay";
>>>> -
>>>>  	num-slots = <1>;
>>>>  	broken-cd;
>>>>  	card-detect-delay = <200>;
>>>> @@ -485,7 +485,8 @@
>>>>  	bus-width = <4>;
>>>>  	pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
>>>>  	pinctrl-names = "default";
>>>> -	vmmc-supply = <&ldo4_reg &ldo21_reg>;
>>>> +	vmmc-supply = <&ldo21_reg>;
>>>> +	vqmmc-supply = <&ldo4_reg>;
>>>>  	cd-gpios = <&gpk2 2 0>;
>>>>  	cd-inverted;
>>>>  	status = "okay";
>>>>
>>>
>>>
>>>
>>
>>
> 
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