linux-kernel - Re: [v4,1/6] Documentation: DT: Consolidate SP805 binding docs

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Date:   Thu, 28 Jun 2018 19:55:01 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Ray Jui <ray.jui@...adcom.com>
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Frank Rowand <frowand.list@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Robin Murphy <robin.murphy@....com>,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com
Subject: Re: [v4,1/6] Documentation: DT: Consolidate SP805 binding docs

On Mon, May 28, 2018 at 11:01:32AM -0700, Ray Jui wrote:
> Consolidate two SP805 binding documents "arm,sp805.txt" and
> "sp805-wdt.txt" into "arm,sp805.txt" that matches the naming of the
> desired compatible string to be used
> 
> Signed-off-by: Ray Jui <ray.jui@...adcom.com>
> Reviewed-by: Rob Herring <robh@...nel.org>

For the record:

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
>  .../devicetree/bindings/watchdog/arm,sp805.txt     | 27 ++++++++++++++-----
>  .../devicetree/bindings/watchdog/sp805-wdt.txt     | 31 ----------------------
>  2 files changed, 20 insertions(+), 38 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/watchdog/sp805-wdt.txt
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/arm,sp805.txt b/Documentation/devicetree/bindings/watchdog/arm,sp805.txt
> index ca99d64..0fa3629 100644
> --- a/Documentation/devicetree/bindings/watchdog/arm,sp805.txt
> +++ b/Documentation/devicetree/bindings/watchdog/arm,sp805.txt
> @@ -1,17 +1,30 @@
>  ARM AMBA Primecell SP805 Watchdog
>  
> +SP805 WDT is a ARM Primecell Peripheral and has a standard-id register that
> +can be used to identify the peripheral type, vendor, and revision.
> +This value can be used for driver matching.
> +
> +As SP805 WDT is a primecell IP, it follows the base bindings specified in
> +'arm/primecell.txt'
> +
>  Required properties:
> -- compatible: Should be "arm,sp805" & "arm,primecell"
> -- reg: Should contain location and length for watchdog timer register.
> -- interrupts: Should contain the list of watchdog timer interrupts.
> -- clocks: clocks driving the watchdog timer hardware. This list should be 2
> -	clocks. With 2 clocks, the order is wdogclk clock, apb_pclk.
> +- compatible:  Should be "arm,sp805" & "arm,primecell"
> +- reg:         Should contain location and length for watchdog timer register
> +- clocks:      Clocks driving the watchdog timer hardware. This list should be
> +               2 clocks. With 2 clocks, the order is wdog_clk, apb_pclk
> +               wdog_clk can be equal to or be a sub-multiple of the apb_pclk
> +               frequency
> +- clock-names: Shall be "wdog_clk" for first clock and "apb_pclk" for the
> +               second one
> +
> +Optional properties:
> +- interrupts:  Should specify WDT interrupt number
>  
>  Example:
>  	watchdog@...90000 {
>  		compatible = "arm,sp805", "arm,primecell";
>  		reg = <0x66090000 0x1000>;
>  		interrupts = <GIC_SPI 406 IRQ_TYPE_LEVEL_HIGH>;
> -		clocks = <&apb_pclk>,<&apb_pclk>;
> -		clock-names = "wdogclk", "apb_pclk";
> +		clocks = <&wdt_clk>, <&apb_pclk>;
> +		clock-names = "wdog_clk", "apb_pclk";
>  	};
> diff --git a/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt b/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt
> deleted file mode 100644
> index edc4f0e..0000000
> --- a/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt
> +++ /dev/null
> @@ -1,31 +0,0 @@
> -* ARM SP805 Watchdog Timer (WDT) Controller
> -
> -SP805 WDT is a ARM Primecell Peripheral and has a standard-id register that
> -can be used to identify the peripheral type, vendor, and revision.
> -This value can be used for driver matching.
> -
> -As SP805 WDT is a primecell IP, it follows the base bindings specified in
> -'arm/primecell.txt'
> -
> -Required properties:
> -- compatible : Should be "arm,sp805-wdt", "arm,primecell"
> -- reg : Base address and size of the watchdog timer registers.
> -- clocks : From common clock binding.
> -           First clock is PCLK and the second is WDOGCLK.
> -           WDOGCLK can be equal to or be a sub-multiple of the PCLK frequency.
> -- clock-names : From common clock binding.
> -                Shall be "apb_pclk" for first clock and "wdog_clk" for the
> -                second one.
> -
> -Optional properties:
> -- interrupts : Should specify WDT interrupt number.
> -
> -Examples:
> -
> -		cluster1_core0_watchdog: wdt@...0000 {
> -			compatible = "arm,sp805-wdt", "arm,primecell";
> -			reg = <0x0 0xc000000 0x0 0x1000>;
> -			clocks = <&clockgen 4 3>, <&clockgen 4 3>;
> -			clock-names = "apb_pclk", "wdog_clk";
> -		};
> -