On Fri, Jan 06, 2017 at 08:41:11PM +0900, Andi Shyti wrote:
> Currently tm2e dts includes tm2 but there are some differences
> between the two boards and tm2 has some properties that tm2e
> doesn't have.
>
> That's why it's important to keep the two dts files independent
> and put all the commonalities in a tm2-common.dtsi file.
>
> At the current status the only two differences between the two
> dts files (besides the board name) are ldo31 and ldo38.
>
> Signed-off-by: Andi Shyti <andi.shyti@xxxxxxxxxxx>
> ---
> ...ynos5433-tm2.dts => exynos5433-tm2-common.dtsi} | 24 +-
> arch/arm64/boot/dts/exynos/exynos5433-tm2.dts | 1153 +-------------------
> arch/arm64/boot/dts/exynos/exynos5433-tm2e.dts | 22 +-
> 3 files changed, 56 insertions(+), 1143 deletions(-)
> copy arch/arm64/boot/dts/exynos/{exynos5433-tm2.dts => exynos5433-tm2-common.dtsi} (98%)
> rewrite arch/arm64/boot/dts/exynos/exynos5433-tm2.dts (98%)
>
> diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> similarity index 98%
> copy from arch/arm64/boot/dts/exynos/exynos5433-tm2.dts
> copy to arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> index e8971f4a5977..c43f9a38adf6 100644
> --- a/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts
> +++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
Thanks. Now I can easily see the differences... and there are
differences! This is much, much easier to review then all previous
versions.
> @@ -3,8 +3,8 @@
> *
> * Copyright (c) 2016 Samsung Electronics Co., Ltd.
> *
> - * Device tree source file for Samsung's TM2 board which is based on
> - * Samsung Exynos5433 SoC.
> + * Common device tree source file for Samsung's TM2 and TM2E boards
> + * which are based on Samsung Exynos5433 SoC.
> *
> * This program is free software; you can redistribute it and/or modify
> * it under the terms of the GNU General Public License version 2 as
> @@ -322,7 +322,7 @@
> "s2mps13_bt";
> };
>
> - regulators {
> + regulators: regulators {
I understand that you added the label to create LDO31 and LDO38
regulators in specific DTS (I read your comments below). I do not have
strong opinion but I would prefer overriding in DTS instead of new addon, so:
1. without the label above,
2. with something like:
ldo31_reg: LDO31 {
/*
* LDO31 differs from target to target,
* its definition is in the .dts
*/
};
With such empty stub, one can still find all the regulator nodes in
common DTSI. I find it more readable. What do you think?
Best regards,
Krzysztof
> ldo1_reg: LDO1 {
> regulator-name = "VDD_ALIVE_0.9V_AP";
> regulator-min-microvolt = <900000>;
> @@ -552,11 +552,10 @@
> regulator-max-microvolt = <3300000>;
> };
>
> - ldo31_reg: LDO31 {
> - regulator-name = "TSP_VDD_1.85V_AP";
> - regulator-min-microvolt = <1850000>;
> - regulator-max-microvolt = <1850000>;
> - };
> + /*
> + * LDO31 differs from target to target,
> + * its definition is in the .dts
> + */
>
> ldo32_reg: LDO32 {
> regulator-name = "VTOUCH_1.8V_AP";
> @@ -595,11 +594,10 @@
> regulator-max-microvolt = <1800000>;
> };
>
> - ldo38_reg: LDO38 {
> - regulator-name = "VCC_3.0V_MOTOR_AP";
> - regulator-min-microvolt = <3000000>;
> - regulator-max-microvolt = <3000000>;
> - };
> + /*
> + * LDO38 differs from target to target,
> + * its definition is in the .dts
> + */
>
> ldo39_reg: LDO39 {
> regulator-name = "V_HRM_1.8V";
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