[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <CAL_JsqJmpLw_iNXz5vZt9qcoR_CSRum3hB4fVYtERBsB=v=H8Q@mail.gmail.com>
Date: Wed, 6 May 2015 08:05:11 -0500
From: Rob Herring <robh@...nel.org>
To: Stephen Boyd <sboyd@...eaurora.org>
Cc: Mike Turquette <mturquette@...aro.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>
Subject: Re: [PATCH 1/2] dt-bindings: Add pxa1928 clock binding
On Wed, May 6, 2015 at 2:17 AM, Stephen Boyd <sboyd@...eaurora.org> wrote:
> On 04/30, Rob Herring wrote:
>> diff --git a/Documentation/devicetree/bindings/clock/marvell,pxa1928.txt b/Documentation/devicetree/bindings/clock/marvell,pxa1928.txt
>> new file mode 100644
>> index 0000000..809c5a2
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/marvell,pxa1928.txt
>> @@ -0,0 +1,21 @@
>> +* Marvell PXA1928 Clock Controllers
>> +
>> +The PXA1928 clock subsystem generates and supplies clock to various
>> +controllers within the PXA1928 SoC. The PXA1928 contains 3 clock controller
>> +blocks called APMU, MPMU, and APBC roughly corresponding to internal buses.
>> +
>> +Required Properties:
>> +
>> +- compatible: should be one of the following.
>> + - "marvell,pxa1928-apmu" - APMU controller compatible
>> + - "marvell,pxa1928-mpmu" - MPMU controller compatible
>> + - "marvell,pxa1928-apbc" - APBC controller compatible
>> +- reg: physical base address of the clock controller and length of memory mapped
>> + region.
>> +- #clock-cells: should be 1.
>> +- #reset-cells: should be 1.
>> +
>> +Each clock is assigned an identifier and client nodes use the clock controller
>> +phandle and this identifier to specify the clock which they consume.
>> +
>> +All these identifiers can be found in <dt-bindings/clock/marvell,pxa1928.h>.
>
> No example?
There's nothing really special about this binding to show.
>> diff --git a/include/dt-bindings/clock/marvell,pxa1928.h b/include/dt-bindings/clock/marvell,pxa1928.h
>> new file mode 100644
>> index 0000000..c393ca2
>> --- /dev/null
>> +++ b/include/dt-bindings/clock/marvell,pxa1928.h
>> @@ -0,0 +1,57 @@
>> +#ifndef __DTS_MARVELL_PXA1928_CLOCK_H
>> +#define __DTS_MARVELL_PXA1928_CLOCK_H
>> +
>> +/*
>> + * Clock ID values here correspond to the control register offset/4.
>> + */
>> +
>> +/* apb periphrals */
>
> s/periphrals/peripherals/ ?
Uhh, cut-n-paste from marvell,mmp2.h...
>
>> +#define PXA1928_CLK_RTC 0
>> +#define PXA1928_CLK_TWSI0 1
>> +#define PXA1928_CLK_TWSI1 2
>> +#define PXA1928_CLK_TWSI2 3
>> +#define PXA1928_CLK_TWSI3 4
>> +#define PXA1928_CLK_OWIRE 5
>> +#define PXA1928_CLK_KPC 6
>> +#define PXA1928_CLK_TB_ROTARY 7
>> +#define PXA1928_CLK_SW_JTAG 8
>> +#define PXA1928_CLK_TIMER1 9
>
> This is really nitpicky, but I find the jump from decimal to hex odd.
> Is there any reason why we don't just use decimal or hex throughout?
> Perhaps it's related to why there are holes in the number space?
What is 9 in hex? ;) I'll prefix them. It's hard to convert decimal to
register values.
>> +#define PXA1928_CLK_UART0 0xb
Rob
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists