On 2017년 01월 06일 16:05, Krzysztof Kozlowski wrote:
> On Fri, Jan 06, 2017 at 12:59:05PM +0900, Jaechul Lee wrote:
>> From: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
>>
>> This patch fixes the wrong information of ldo23 and ldo25 on both TM2 and TM2E.
>
> Please describe what is exactly wrong and how it affects the
> system/user. This is going to the fixes so it needs a good explanation.
When I posted the patch[1], I refer to the old schematic document of both TM2 and TM2E.
[1] 01e5d2352152 ("arm64: dts: exynos: Add dts file for Exynos5433-based TM2 board")
After checking the highest version of schematic document of both TM2 and TM2E,
there is no difference of ldo23/ldo25 on both TM2 and TM2E.
- ldo23 is used on TM2/TM2E, but the name/max-microvolt are wrong.
- ldo25 isn't used on TM2/TM2E. (not connected)
Because ldo23 and lod25 are not used on other device in Exynos5433 and TM2 board.
this patch does not affect the operation to system/user.
>
>>
>> Fixes: 01e5d2352152 ("arm64: dts: exynos: Add dts file for Exynos5433-based TM2 board")
>> Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
>> Signed-off-by: Andi Shyti <andi.shyti@xxxxxxxxxxx>
>> Signed-off-by: Jaechul Lee <jcsing.lee@xxxxxxxxxxx>
>> ---
>> arch/arm64/boot/dts/exynos/exynos5433-tm2.dts | 7 ++++---
>> arch/arm64/boot/dts/exynos/exynos5433-tm2e.dts | 10 ----------
>> 2 files changed, 4 insertions(+), 13 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts b/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts
>> index 3b5215c..e8971f4 100644
>> --- a/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts
>> +++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts
>> @@ -504,9 +504,9 @@
>> };
>>
>> ldo23_reg: LDO23 {
>> - regulator-name = "CAM_SEN_CORE_1.2V_AP";
>> + regulator-name = "CAM_SEN_CORE_1.05V_AP";
>> regulator-min-microvolt = <1050000>;
>> - regulator-max-microvolt = <1200000>;
>> + regulator-max-microvolt = <1050000>;
>> };
>>
>> ldo24_reg: LDO24 {
>> @@ -516,9 +516,10 @@
>> };
>>
>> ldo25_reg: LDO25 {
>> - regulator-name = "CAM_SEN_A2.8V_AP";
>> + regulator-name = "UNUSED_LDO25";
>> regulator-min-microvolt = <2800000>;
>> regulator-max-microvolt = <2800000>;
>> + regulator-always-off;
>
> Don't add it. See my other patch.
OK. After completing the kernel booting, the unused regulators will be off.
>
> Best regards,
> Krzysztof
>
>> };
>>
>> ldo26_reg: LDO26 {
>> diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2e.dts b/arch/arm64/boot/dts/exynos/exynos5433-tm2e.dts
>> index 1db4e7f..854c583 100644
>> --- a/arch/arm64/boot/dts/exynos/exynos5433-tm2e.dts
>> +++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2e.dts
>> @@ -18,16 +18,6 @@
>> compatible = "samsung,tm2e", "samsung,exynos5433";
>> };
>>
>> -&ldo23_reg {
>> - regulator-name = "CAM_SEN_CORE_1.025V_AP";
>> - regulator-max-microvolt = <1050000>;
>> -};
>> -
>> -&ldo25_reg {
>> - regulator-name = "UNUSED_LDO25";
>> - regulator-always-off;
>> -};
>> -
>> &ldo31_reg {
>> regulator-name = "TSP_VDD_1.8V_AP";
>> regulator-min-microvolt = <1800000>;
>> --
>> 2.7.4
>>
>
>
>
--
Best Regards,
Chanwoo Choi
S/W Center, Samsung Electronics
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