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Date: Fri, 26 Feb 2016 09:38:43 +0900
From: Krzysztof Kozlowski <k.kozlowski@...sung.com>
To: Alim Akhtar <alim.akhtar@...sung.com>,
linux-arm-kernel@...ts.infradead.org
Cc: catalin.marinas@....com, will.deacon@....com,
linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
devicetree@...r.kernel.org, l.majewski@...sung.com
Subject: Re: [RESPIN/PATCH] arm64: dts: Add tmu node for exynos7
On 25.02.2016 18:05, Alim Akhtar wrote:
> This patch adds tmu node, related temprature sensor and triping
> point data for Atlas cpu core found on exynos7 SoC.
>
> Signed-off-by: Alim Akhtar <alim.akhtar@...sung.com>
> ---
> Change log:
> * no changes, just sending back from my email id.
All my comments from previous submission are still valid...
Best regards,
Krzysztof
>
> .../boot/dts/exynos/exynos7-tmu-sensor-conf.dtsi | 25 +++++++++
> .../arm64/boot/dts/exynos/exynos7-trip-points.dtsi | 55 ++++++++++++++++++++
> arch/arm64/boot/dts/exynos/exynos7.dtsi | 20 +++++++
> 3 files changed, 100 insertions(+)
> create mode 100644 arch/arm64/boot/dts/exynos/exynos7-tmu-sensor-conf.dtsi
> create mode 100644 arch/arm64/boot/dts/exynos/exynos7-trip-points.dtsi
>
> diff --git a/arch/arm64/boot/dts/exynos/exynos7-tmu-sensor-conf.dtsi b/arch/arm64/boot/dts/exynos/exynos7-tmu-sensor-conf.dtsi
> new file mode 100644
> index 0000000..1d6dcf2
> --- /dev/null
> +++ b/arch/arm64/boot/dts/exynos/exynos7-tmu-sensor-conf.dtsi
> @@ -0,0 +1,25 @@
> +/*
> + * Device tree sources for Exynos7 TMU sensor configuration
> + *
> + * Copyright (c) 2016 Samsung Electronics Co., Ltd.
> + * http://www.samsung.com
> + *
> + * 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
> + * published by the Free Software Foundation.
> + *
> + */
> +
> +#include <dt-bindings/thermal/thermal_exynos.h>
> +
> +#thermal-sensor-cells = <0>;
> +samsung,tmu_gain = <9>;
> +samsung,tmu_reference_voltage = <17>;
> +samsung,tmu_noise_cancel_mode = <4>;
> +samsung,tmu_efuse_value = <75>;
> +samsung,tmu_min_efuse_value = <15>;
> +samsung,tmu_max_efuse_value = <100>;
> +samsung,tmu_first_point_trim = <25>;
> +samsung,tmu_second_point_trim = <85>;
> +samsung,tmu_default_temp_offset = <50>;
> +samsung,tmu_cal_type = <TYPE_ONE_POINT_TRIMMING>;
> diff --git a/arch/arm64/boot/dts/exynos/exynos7-trip-points.dtsi b/arch/arm64/boot/dts/exynos/exynos7-trip-points.dtsi
> new file mode 100644
> index 0000000..3970545
> --- /dev/null
> +++ b/arch/arm64/boot/dts/exynos/exynos7-trip-points.dtsi
> @@ -0,0 +1,55 @@
> +/*
> + * Device tree sources for default Exynos7 thermal zone definition
> + *
> + * Copyright (c) 2016 Samsung Electronics Co., Ltd.
> + * http://www.samsung.com
> + *
> + * 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
> + * published by the Free Software Foundation.
> + *
> + */
> +
> +trips {
> + cpu-alert-0 {
> + temperature = <75000>; /* millicelsius */
> + hysteresis = <10000>; /* millicelsius */
> + type = "passive";
> + };
> + cpu-alert-1 {
> + temperature = <80000>; /* millicelsius */
> + hysteresis = <10000>; /* millicelsius */
> + type = "passive";
> + };
> + cpu-alert-2 {
> + temperature = <85000>; /* millicelsius */
> + hysteresis = <10000>; /* millicelsius */
> + type = "passive";
> + };
> + cpu-alert-3 {
> + temperature = <90000>; /* millicelsius */
> + hysteresis = <10000>; /* millicelsius */
> + type = "passive";
> + };
> + cpu-alert-4 {
> + temperature = <95000>; /* millicelsius */
> + hysteresis = <10000>; /* millicelsius */
> + type = "passive";
> + };
> + cpu-alert-5 {
> + temperature = <100000>; /* millicelsius */
> + hysteresis = <10000>; /* millicelsius */
> + type = "passive";
> + };
> + cpu-alert-6 {
> + temperature = <110000>; /* millicelsius */
> + hysteresis = <10000>; /* millicelsius */
> + type = "passive";
> + };
> + /* HW Trip point */
> + cpu-crit-0 {
> + temperature = <115000>; /* millicelsius */
> + hysteresis = <0>; /* millicelsius */
> + type = "critical";
> + };
> +};
> diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi
> index c662f98..fc9d130 100644
> --- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
> @@ -27,6 +27,7 @@
> pinctrl6 = &pinctrl_fsys0;
> pinctrl7 = &pinctrl_fsys1;
> pinctrl8 = &pinctrl_bus1;
> + tmuctrl0 = &tmuctrl_0;
> };
>
> cpus {
> @@ -538,6 +539,25 @@
> clocks = <&clock_peric0 PCLK_PWM>;
> clock-names = "timers";
> };
> +
> + tmuctrl_0: tmu@...60000 {
> + compatible = "samsung,exynos7-tmu";
> + reg = <0x10060000 0x200>;
> + interrupts = <0 108 0>;
> + clocks = <&clock_peris PCLK_TMU>,
> + <&clock_peris SCLK_TMU>;
> + clock-names = "tmu_apbif", "tmu_sclk";
> + #include "exynos7-tmu-sensor-conf.dtsi"
> + };
> +
> + thermal-zones {
> + atlas_thermal: atlas-thermal {
> + polling-delay-passive = <0>; /* milliseconds */
> + polling-delay = <0>; /* milliseconds */
> + thermal-sensors = <&tmuctrl_0>;
> + #include "exynos7-trip-points.dtsi"
> + };
> + };
> };
> };
>
>
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