[U-Boot] [PATCH 3/7 v5] EXYNOS5: FDT: Add TMU device node values
Simon Glass
sjg at chromium.org
Tue Jan 22 16:58:07 CET 2013
Hi Akshay,
On Mon, Jan 21, 2013 at 3:11 AM, Akshay Saraswat <akshay.s at samsung.com> wrote:
> Fdt entry for Exynos TMU driver specific pre-defined values used for
> calibration of current temperature and defining threshold values.
>
> Signed-off-by: Akshay Saraswat <akshay.s at samsung.com>
With nits below fixed
Acked-by: Simon Glass <sjg at chromium.org>
> ---
> Changes since v4:
> - Rebased this patch.
>
> arch/arm/dts/exynos5250.dtsi | 5 +++++
> board/samsung/dts/exynos5250-smdk5250.dts | 13 +++++++++++
> doc/device-tree-bindings/exynos/tmu.txt | 35 +++++++++++++++++++++++++++++
> include/fdtdec.h | 1 +
> lib/fdtdec.c | 1 +
> 5 files changed, 55 insertions(+)
> create mode 100644 doc/device-tree-bindings/exynos/tmu.txt
>
> diff --git a/arch/arm/dts/exynos5250.dtsi b/arch/arm/dts/exynos5250.dtsi
> index ed8c8dd..b2ef42e 100644
> --- a/arch/arm/dts/exynos5250.dtsi
> +++ b/arch/arm/dts/exynos5250.dtsi
> @@ -151,4 +151,9 @@
> };
> };
>
> + tmu at 10060000 {
> + compatible = "samsung,exynos-tmu";
> + reg = <0x10060000 0xffff>;
The size should be 0x10000 I think.
> + };
> +
> };
> diff --git a/board/samsung/dts/exynos5250-smdk5250.dts b/board/samsung/dts/exynos5250-smdk5250.dts
> index cbfab6f..f49ca44 100644
> --- a/board/samsung/dts/exynos5250-smdk5250.dts
> +++ b/board/samsung/dts/exynos5250-smdk5250.dts
> @@ -66,4 +66,17 @@
> compatible = "maxim,max77686_pmic";
> };
> };
> +
> + tmu at 10060000 {
> + samsung,mux = <6>;
> + samsung,min-temp = <25>;
> + samsung,max-temp = <125>;
> + samsung,start-warning = <95>;
> + samsung,start-tripping = <105>;
> + samsung,efuse-min-value = <40>;
> + samsung,efuse-value = <55>;
> + samsung,efuse-max-value = <100>;
> + samsung,slope = <268470274>;
> + samsung,dc-value = <25>;
> + };
> };
> diff --git a/doc/device-tree-bindings/exynos/tmu.txt b/doc/device-tree-bindings/exynos/tmu.txt
> new file mode 100644
> index 0000000..ed1e22a
> --- /dev/null
> +++ b/doc/device-tree-bindings/exynos/tmu.txt
> @@ -0,0 +1,35 @@
> +Exynos Thermal management Unit
> +
> +The device node for TMU that is a part of Exynos5250
> +SOC is as described in the document "Open Firmware Recommended
> +Practic : Universal Serial Bus" with the following modifications
Practice
> +and additions:
> +
> +Required properties :
> + - compatible : Should be "samsung,exynos-tmu" for TMU
> + - samsung,mux : mux Address for the TMU to enable TMU core
This doesn't make a lot of sense - can you expand this comment a bit
so people know what value to use?
> + - samsung,min-temp : Minimum temperature, default is 25
> + - samsung,max-temp : Maximum temperature, defalut set to 125
> + - samsung,start-warning : temp at which TMU start giving warning
> + - samsung,start-tripping : temp at which system will trip and shutdown
> + - samsung,efuse-min-value : SOC efuse min value
> + - samsung,efuse-value : SOC actual efuse value
> + - samsung,efuse-max-value : SoC max efuse value
> + - samsung,slope : Gain of amplifier, default is 268470274
What are the units for this value?
> + - samsung,dc-value : DC value of TMU, default is 25
> +
> +Example:
> +
> +tmu at 10060000 {
> + compatible = "samsung,exynos-tmu"
> + samsung,mux = <6>;
> + samsung,min-temp = <25>;
> + samsung,max-temp = <125>;
> + samsung,start-warning = <95>;
> + samsung,start-tripping = <105>;
> + samsung,efuse-min-value = <40>;
> + samsung,efuse-value = <55>;
> + samsung,efuse-max-value = <100>;
> + samsung,slope = <268470274>;
> + samsung,dc-value = <25>;
> +};
> diff --git a/include/fdtdec.h b/include/fdtdec.h
> index f77d195..058fb51 100644
> --- a/include/fdtdec.h
> +++ b/include/fdtdec.h
> @@ -79,6 +79,7 @@ enum fdt_compat_id {
> COMPAT_SAMSUNG_EXYNOS_EHCI, /* Exynos EHCI controller */
> COMPAT_SAMSUNG_EXYNOS_USB_PHY, /* Exynos phy controller for usb2.0 */
> COMPAT_MAXIM_MAX77686_PMIC, /* MAX77686 PMIC */
> + COMPAT_SAMSUNG_EXYNOS_TMU, /* Exynos TMU */
>
> COMPAT_COUNT,
> };
> diff --git a/lib/fdtdec.c b/lib/fdtdec.c
> index 16921e1..4613fcd 100644
> --- a/lib/fdtdec.c
> +++ b/lib/fdtdec.c
> @@ -54,6 +54,7 @@ static const char * const compat_names[COMPAT_COUNT] = {
> COMPAT(SAMSUNG_EXYNOS_EHCI, "samsung,exynos-ehci"),
> COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
> COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686_pmic"),
> + COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
> };
>
> const char *fdtdec_get_compatible(enum fdt_compat_id id)
> --
> 1.7.9.5
>
Regards,
Simon
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