linux-kernel - Re: [PATCH 1/3] thermal: bcm281xx: Add Temperature Monitor driver

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Message-Id: <382461FD-5CB7-461C-A9A7-76D2EF99C769@codeaurora.org>
Date:	Sat, 26 Oct 2013 01:46:13 -0500
From:	Kumar Gala <galak@...eaurora.org>
To:	Wendy Ng <wendy.ng@...adcom.com>
Cc:	"Rob Herring" <rob.herring@...xeda.com>,
	"Pawel Moll" <pawel.moll@....com>,
	"Mark Rutland" <mark.rutland@....com>,
	"Stephen Warren" <swarren@...dotorg.org>,
	"Ian Campbell" <ijc+devicetree@...lion.org.uk>,
	"Eduardo Valentin" <eduardo.valentin@...com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, "Christian Daudt" <bcm@...thebug.org>,
	"Markus Mayer" <mmayer@...adcom.com>,
	"Tim Kryger" <tim.kryger@...aro.org>,
	"Matt Porter" <matt.porter@...aro.org>
Subject: Re: [PATCH 1/3] thermal: bcm281xx: Add Temperature Monitor driver


On Oct 25, 2013, at 7:00 PM, Wendy Ng wrote:

> This adds the support for Temperature Monitor (TMON) driver for
> Broadcom bcm281xx SoCs. This driver plugs into the Thermal Framework.
> 
> Note that this version of the TMON driver does support interrupt-driven
> mode -- only polling-mode of the thermal framework can be used.
> 
> Signed-off-by: Wendy Ng <wendy.ng@...adcom.com>
> Reviewed-by: Markus Mayer <mmayer@...adcom.com>
> Reviewed-by: Christian Daudt <csd@...adcom.com>
> Reviewed-by: Matt Porter <matt.porter@...aro.org>
> Reviewed-by: Tim Kryger <tim.kryger@...aro.org>
> ---
> .../bindings/thermal/bcm-kona-thermal.txt          |   24 +++
> drivers/thermal/Kconfig                            |   11 ++
> drivers/thermal/Makefile                           |    1 +
> drivers/thermal/bcm_kona_tmon.c                    |  173 ++++++++++++++++++++
> 4 files changed, 209 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/thermal/bcm-kona-thermal.txt
> create mode 100644 drivers/thermal/bcm_kona_tmon.c
> 
> diff --git a/Documentation/devicetree/bindings/thermal/bcm-kona-thermal.txt b/Documentation/devicetree/bindings/thermal/bcm-kona-thermal.txt
> new file mode 100644
> index 0000000..225b898
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/bcm-kona-thermal.txt
> @@ -0,0 +1,24 @@
> +* Broadcom Kona TMON bindings
> +
> +This version is for the Kona family of SoCs.  The TMON (Temperature Monitor)
> +block in a Kona SoC device is used to measure the chip temperature at constant
> +intervals.
> +The TMON block asserts an interrupt if temperature exceeds a user programmed
> +threshold value.  The TMON block would reset the entire device once it
> +reaches a critical temperature which is also a programmable setting.
> +
> +Required properties:
> +- compatible : "brcm,bcm11351-tmon", "brcm,kona-tmon"
> +- reg : Address range of the thermal register
> +- clocks : the clock signal that drives the TMON block
> +- interrupts: the interrupt signal associated with the TMON block
> +
> +
> +Example:
> +	tmon@...08000 {
> +		compatible = "brcm,bcm11351-tmon", "brcm,kona-tmon";
> +		reg = <0x34008000 0x0024>;
> +		clocks = <&tmon_1m_clk>;
> +		interrupts = <GIC_SPI 183 IRQ_TYPE_LEVEL_HIGH>;
> +		status = "disabled";

I'd remove the 'status' line from an example.

> +	};

Ack on the binding (beyond my minor nit pick on the status prop).

Acked-by: Kumar Gala <galak@...eaurora.org>

- k

-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

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