On 2017? 01? 06? 16:05, Krzysztof Kozlowski wrote:

On Fri, Jan 06, 2017 at 12:59:05PM +0900, Jaechul Lee wrote:

quoted

From: Chanwoo Choi <cw00.choi@samsung.com>

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.

quoted

Fixes: 01e5d2352152 ("arm64: dts: exynos: Add dts file for Exynos5433-based TM2 board")
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Andi Shyti <redacted>
Signed-off-by: Jaechul Lee <redacted>
---
 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

quoted

 			};
 
 			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